10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

___________________________________ 

FORM 10-Q

(Mark One)

☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2022

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                     

Commission file number: 1-6003

  _____________________________________________

 

FEDERAL SIGNAL CORPORATION

(Exact name of registrant as specified in its charter)

Delaware	36-1063330
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

1415 West 22nd Street, Oak Brook, Illinois

(Address of principal executive offices)

60523

(Zip code)

(630) 954-2000

(Registrant’s telephone number, including area code)

  _____________________________________________

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $1.00 per share	FSS	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☑    No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  ☑    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☑	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
Emerging growth company	☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ☐    No  ☑

As of April 30, 2022, the number of shares outstanding of the registrant’s common stock was 60,611,816.

FEDERAL SIGNAL CORPORATION

TABLE OF CONTENTS

		Page
PART I.	FINANCIAL INFORMATION
Item 1.	Financial Statements (Unaudited)	2
	Condensed Consolidated Statements of Operations for the Three Months Ended March 31, 2022 and 2021	2
	Condensed Consolidated Statements of Comprehensive Income for the Three Months Ended March 31, 2022 and 2021	3
	Condensed Consolidated Balance Sheets as of March 31, 2022 and December 31, 2021	4
	Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2022 and 2021	5
	Condensed Consolidated Statements of Stockholders’ Equity for the Three Months Ended March 31, 2022 and 2021	6
	Notes to Condensed Consolidated Financial Statements	7
	Note 1 – Summary of Significant Accounting Policies	7
	Note 2 – Revenue Recognition	8
	Note 3 – Inventories	9
	Note 4 – Debt	9
	Note 5 – Income Taxes	10
	Note 6 – Pensions	10
	Note 7 – Commitments and Contingencies	11
	Note 8 – Earnings Per Share	16
	Note 9 – Stockholders’ Equity	17
	Note 10 – Segment Information	18
	Note 11 – Fair Value Measurements	19
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	21
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	27
Item 4.	Controls and Procedures	27
PART II.	OTHER INFORMATION
Item 1.	Legal Proceedings	28
Item 1A.	Risk Factors	28
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	28
Item 3.	Defaults Upon Senior Securities	28
Item 4.	Mine Safety Disclosures	28
Item 5.	Other Information	28
Item 6.	Exhibits	29
SIGNATURE		30

FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q (“Form 10-Q”) is being filed by Federal Signal Corporation and its subsidiaries (referred to collectively as the “Company,” “we,” “our” or “us” herein, unless the context otherwise indicates) with the United States (“U.S.”) Securities and Exchange Commission (the “SEC”), and includes comments made by management that may contain words such as “may,” “will,” “believe,” “expect,” “anticipate,” “intend,” “plan,” “project,” “estimate” and “objective” or similar terminology, or the negative thereof, concerning the Company’s future financial performance, business strategy, plans, goals and objectives. These expressions are intended to identify forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the Private Securities Litigation Reform Act of 1995. Forward-looking statements include information concerning the Company’s possible or assumed future performance or results of operations and are not guarantees. While these statements are based on assumptions and judgments that management has made in light of industry experience as well as perceptions of historical trends, current conditions, expected future developments and other factors believed to be appropriate under the circumstances, they are subject to risks, uncertainties and other factors that may cause the Company’s actual results, performance or achievements to be materially different.

These risks and uncertainties, some of which are beyond the Company’s control, include the risk factors described under Part I, Item 1A, Risk Factors, of the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, which was filed with the SEC on March 1, 2022. These factors may not constitute all factors that could cause actual results to differ materially from those discussed in any forward-looking statement. The Company operates in a continually changing business environment and new factors emerge from time to time, including, for example, the ongoing coronavirus pandemic and the government response to the pandemic. The Company cannot predict such factors, nor can it assess the impact, if any, of such factors on its results of operations, financial condition or cash flow. Accordingly, forward-looking statements should not be relied upon as a predictor of actual results. The Company disclaims any responsibility to update any forward-looking statement provided in this Form 10-Q.

ADDITIONAL INFORMATION

The Company is subject to the reporting and information requirements of the Exchange Act and, as a result, is obligated to file Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and other reports and information with the SEC, as well as amendments to those reports. The Company makes these filings available free of charge through our website at www.federalsignal.com as soon as reasonably practicable after such materials are filed with, or furnished to, the SEC. Information on our website does not constitute part of this Form 10-Q. In addition, the SEC maintains a website at www.sec.gov that contains reports, proxy and information statements, and other information regarding issuers that file electronically.

1

PART I. FINANCIAL INFORMATION

Item 1.     Financial Statements (Unaudited).

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)

	Three Months Ended March 31,
(in millions, except per share data)	2022		2021
Net sales	$	330.2	$	278.8
Cost of sales	254.5		210.0
Gross profit	75.7		68.8
Selling, engineering, general and administrative expenses	43.6		38.2
Amortization expense	3.3		2.6
Acquisition and integration-related expenses	0.3		0.2
Operating income	28.5		27.8
Interest expense	1.3		1.1
Other income, net	(0.4)		(0.5)
Income before income taxes	27.6		27.2
Income tax expense	7.1		5.0
Net income	$	20.5	$	22.2
Earnings per share:
Basic	$	0.34	$	0.37
Diluted	0.33		0.36
Weighted average common shares outstanding:
Basic	60.7		60.6
Diluted	61.4		61.7

See notes to condensed consolidated financial statements.

2

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)

	Three Months Ended March 31,
(in millions)	2022		2021
Net income	$	20.5	$	22.2
Other comprehensive income (loss):
Change in foreign currency translation adjustment	(1.6)		(1.2)
Change in unrecognized net actuarial loss and prior service cost related to pension benefit plans, net of income tax expense of $0.4 and $0.2, respectively	1.0		0.7
Change in unrealized gain or loss on interest rate swaps, net of income tax expense of $0.7 and $0.3, respectively	2.1		0.8
Total other comprehensive income	1.5		0.3
Comprehensive income	$	22.0	$	22.5

See notes to condensed consolidated financial statements.

3

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

	March 31, 2022		December 31, 2021
(in millions, except per share data)	(Unaudited)
ASSETS
Current assets:
Cash and cash equivalents	$	39.2	$	40.5
Accounts receivable, net of allowances for doubtful accounts of $2.6 and $2.1, respectively	156.4		136.0
Inventories	249.7		229.1
Prepaid expenses and other current assets	18.9		25.4
Total current assets	464.2		431.0
Properties and equipment, net of accumulated depreciation of $155.6 and $151.6, respectively	170.4		141.9
Rental equipment, net of accumulated depreciation of $45.3 and $43.8, respectively	111.0		108.4
Operating lease right-of-use assets	25.3		29.8
Goodwill	431.3		432.2
Intangible assets, net of accumulated amortization of $45.9 and $42.7, respectively	203.6		205.7
Deferred tax assets	8.1		8.4
Other long-term assets	11.2		8.7
Total assets	$	1,425.1	$	1,366.1
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Current portion of long-term borrowings and finance lease obligations	$	0.5	$	0.6
Accounts payable	80.7		64.8
Customer deposits	28.5		21.9
Accrued liabilities:
Compensation and withholding taxes	24.2		29.9
Current operating lease liabilities	6.3		8.8
Other current liabilities	41.3		44.4
Total current liabilities	181.5		170.4
Long-term borrowings and finance lease obligations	329.2		282.2
Long-term operating lease liabilities	19.7		22.1
Long-term pension and other postretirement benefit liabilities	38.9		40.4
Deferred tax liabilities	54.5		53.2
Other long-term liabilities	13.5		13.8
Total liabilities	637.3		582.1
Stockholders’ equity:
Common stock, $1 par value per share, 90.0 shares authorized, 69.1 and 68.9 shares issued, respectively	69.1		68.9
Capital in excess of par value	259.3		256.7
Retained earnings	698.6		683.6
Treasury stock, at cost, 8.5 and 8.0 shares, respectively	(166.5)		(151.0)
Accumulated other comprehensive loss	(72.7)		(74.2)
Total stockholders’ equity	787.8		784.0
Total liabilities and stockholders’ equity	$	1,425.1	$	1,366.1

See notes to condensed consolidated financial statements.

4

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

	Three Months Ended March 31,
(in millions)	2022		2021
Operating activities:
Net income	$	20.5	$	22.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	13.4		12.2
Stock-based compensation expense	2.4		1.3
Deferred income taxes	0.3		0.5
Changes in operating assets and liabilities	(29.6)		(10.2)
Net cash provided by operating activities	7.0		26.0
Investing activities:
Purchases of properties and equipment	(33.7)		(4.3)
Payments for acquisition-related activity, net of cash acquired	(1.0)		(52.2)
Other, net	0.4		0.1
Net cash used for investing activities	(34.3)		(56.4)
Financing activities:
Increase in revolving lines of credit, net	46.8		10.1
Purchases of treasury stock	(13.6)		—
Redemptions of common stock to satisfy withholding taxes related to stock-based compensation	(1.5)		(4.0)
Cash dividends paid to stockholders	(5.5)		(5.5)
Proceeds from stock-based compensation activity	—		3.3
Other, net	(0.1)		0.1
Net cash provided by financing activities	26.1		4.0
Effects of foreign exchange rate changes on cash and cash equivalents	(0.1)		(0.5)
Decrease in cash and cash equivalents	(1.3)		(26.9)
Cash and cash equivalents at beginning of year	40.5		81.7
Cash and cash equivalents at end of period	$	39.2	$	54.8

See notes to condensed consolidated financial statements.

5

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (Unaudited)

	Three Months Ended March 31, 2022
(in millions)	Common Stock		Capital in Excess of Par Value		Retained Earnings		Treasury Stock		Accumulated Other Comprehensive Loss		Total
Balance at January 1, 2022	$	68.9	$	256.7	$	683.6	$	(151.0)	$	(74.2)	$	784.0
Net income					20.5						20.5
Total other comprehensive income									1.5		1.5
Cash dividends declared ($0.09 per share)					(5.5)						(5.5)
Stock-based payments:
Stock-based compensation			2.4								2.4
Stock option exercises and other	0.1		0.3				(0.6)				(0.2)
Performance share unit transactions	0.1		(0.1)				(1.3)				(1.3)
Stock repurchase program							(13.6)				(13.6)
Balance at March 31, 2022	$	69.1	$	259.3	$	698.6	$	(166.5)	$	(72.7)	$	787.8

	Three Months Ended March 31, 2021
(in millions)	Common Stock		Capital in Excess of Par Value		Retained Earnings		Treasury Stock		Accumulated Other Comprehensive Loss		Total
Balance at January 1, 2021	$	67.8	$	240.8	$	605.0	$	(119.8)	$	(91.7)	$	702.1
Net income					22.2						22.2
Total other comprehensive income									0.3		0.3
Cash dividends declared ($0.09 per share)					(5.5)						(5.5)
Stock-based payments:
Stock-based compensation			1.3								1.3
Stock option exercises and other	0.4		3.3				(0.7)				3.0
Performance share unit transactions	0.2		(0.2)				(3.8)				(3.8)
Balance at March 31, 2021	$	68.4	$	245.2	$	621.7	$	(124.3)	$	(91.4)	$	719.6

6

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Organization and Description of the Business

Federal Signal Corporation was founded in 1901 and was reincorporated as a Delaware corporation in 1969. References herein to the “Company,” “we,” “our” or “us” refer collectively to Federal Signal Corporation and its subsidiaries.

Products manufactured and services rendered by the Company are divided into two reportable segments: Environmental Solutions Group and Safety and Security Systems Group. The individual operating businesses are organized as such because they share certain characteristics, including technology, marketing, distribution and product application, which create long-term synergies. These segments are discussed in Note 10 – Segment Information.

Basis of Presentation and Consolidation

The accompanying unaudited condensed consolidated financial statements represent the consolidation of Federal Signal Corporation and its subsidiaries included herein and have been prepared by the Company pursuant to the rules and regulations of the United States (“U.S.”) Securities and Exchange Commission (the “SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to such rules and regulations, although the Company believes that the disclosures presented herein are adequate to ensure the information presented is not misleading. Except as otherwise noted, these condensed consolidated financial statements have been prepared in accordance with the Company’s accounting policies described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, and should be read in conjunction with those consolidated financial statements and the notes thereto.

These condensed consolidated financial statements include all normal and recurring adjustments that we considered necessary to present a fair statement of our results of operations, financial condition and cash flow. Intercompany balances and transactions have been eliminated in consolidation. During the current year, the Company is separately presenting Amortization expense on the Condensed Consolidated Statements of Operations. Accordingly, prior-year amounts have been reclassified from Selling, engineering, general and administrative (“SEG&A”) expenses to conform to current-year presentation.

The results reported in these condensed consolidated financial statements should not be regarded as necessarily indicative of results that may be expected for the entire year, which may differ materially due to, among other things, the risk factors described under Part I, Item 1A, Risk Factors, of the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, which was filed with the SEC on March 1, 2022. While we label our quarterly information using a calendar convention whereby our first, second and third quarters are labeled as ending on March 31, June 30 and September 30, respectively, it is our longstanding practice to establish interim quarterly closing dates based on a 13-week period ending on a Saturday, with our fiscal year ending on December 31. The effects of this practice are not material and exist only within a reporting year.

Recent Accounting Pronouncements and Accounting Changes

In October 2021, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2021-08, Business Combinations (Topic 805), Accounting for Contract Assets and Liabilities from Contracts with Customers, which requires an acquirer to recognize and measure contract assets and liabilities acquired in a business combination in accordance with Revenue from Contracts with Customers (Topic 606) rather than adjust them to fair value at the acquisition date. This ASU, which is applied on a prospective basis, is effective for fiscal years beginning after December 15, 2022, and early adoption is permitted. The Company early adopted this ASU effective January 1, 2022, and the guidance will be applied on a prospective basis to future business combinations, as applicable.

There are no new accounting pronouncements issued, but not yet adopted, that are expected to have a material impact on the Company’s results of operations, financial position or cash flow.

Use of Estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect (i) the reported amounts of assets and liabilities, (ii) the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and (iii) the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

7

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED)

(Unaudited)

Significant Accounting Policies

There have been no changes to the Company’s significant accounting policies as disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021.

NOTE 2 – REVENUE RECOGNITION

The following table presents the Company’s Net sales disaggregated by geographic region, based on the location of the end customer, and by major product line:

	Three Months Ended March 31,
(in millions)	2022		2021
Geographic Region:
U.S.	$	264.4	$	215.5
Canada	42.3		40.6
Europe/Other	23.5		22.7
Total net sales	$	330.2	$	278.8
Major Product Line:
Environmental Solutions
Vehicles and equipment (a)	$	217.4	$	179.0
Parts	40.8		35.7
Rental income (b)	9.7		7.5
Other (c)	6.3		5.9
Total	274.2		228.1
Safety and Security Systems
Public safety and security equipment	36.1		31.3
Industrial signaling equipment	14.2		13.4
Warning systems	5.7		6.0
Total	56.0		50.7
Total net sales	$	330.2	$	278.8

(a)    Includes net sales from the sale of new and used vehicles and equipment, including sales of rental equipment.

(b)    Represents income from vehicle and equipment lease arrangements with customers.

(c)    Primarily includes revenues from services, such as maintenance and repair work, and the sale of extended warranty contracts.

Contract Balances

The Company recognizes contract liabilities when cash payments, such as customer deposits, are received in advance of the Company’s satisfaction of the related performance obligations. Contract liabilities are recognized as Net sales when the related performance obligations are satisfied, which generally occurs within three to six months of the cash receipt. Contract liability balances are not materially impacted by any other factors. The Company’s contract liabilities were $32.0 million and $25.3 million as of March 31, 2022 and December 31, 2021, respectively. Contract assets, such as unbilled receivables, were not material as of any of the periods presented herein.

8

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED)

(Unaudited)

NOTE 3 – INVENTORIES

The following table summarizes the components of Inventories:

(in millions)	March 31, 2022		December 31, 2021
Finished goods	$	94.9	$	87.9
Raw materials	126.9		116.4
Work in process	27.9		24.8
Total inventories	$	249.7	$	229.1

NOTE 4 – DEBT

The following table summarizes the components of Long-term borrowings and finance lease obligations:

(in millions)	March 31, 2022		December 31, 2021
2019 Credit Agreement (a)	$	327.8	$	280.7
Finance lease obligations	1.9		2.1
Total long-term borrowings and finance lease obligations, including current portion	329.7		282.8
Less: Current finance lease obligations	0.5		0.6
Total long-term borrowings and finance lease obligations	$	329.2	$	282.2

(a)     Defined as the Second Amended and Restated Credit Agreement, dated July 30, 2019, as amended.

As more fully described within Note 11 – Fair Value Measurements, the Company uses a three-level fair value hierarchy that prioritizes the inputs used to measure fair value. The fair value of long-term debt is based on interest rates that we believe are currently available to us for issuance of debt with similar terms and remaining maturities (Level 2 input).

The following table summarizes the carrying amounts and estimated fair values of the Company’s long-term borrowings:

	March 31, 2022				December 31, 2021
(in millions)	Notional Amount		Fair Value		Notional Amount		Fair Value
Long-term borrowings (a)	$	329.7	$	329.7	$	282.8	$	282.8

(a)     Long-term borrowings includes current finance lease obligations of $0.5 million and $0.6 million as of March 31, 2022 and December 31, 2021, respectively.

Borrowings under the 2019 Credit Agreement bear interest, at the Company’s option, at a base rate or a Eurocurrency or SONIA daily rate (as each is defined in the 2019 Credit Agreement), plus, in each case, an applicable margin. The applicable margin ranges from zero to 0.75% for base rate borrowings and 1.00% to 1.75% for Eurocurrency or SONIA daily rate borrowings. The Company must also pay a commitment fee to the lenders ranging between 0.10% to 0.25% per annum on the unused portion of the $500 million revolving credit facility along with other standard fees. Letter of credit fees are payable on outstanding letters of credit in an amount equal to the applicable Eurocurrency or SONIA daily rate margin plus other customary fees.

The Company is subject to certain net leverage ratio and interest coverage ratio financial covenants under the 2019 Credit Agreement that are to be measured at each fiscal quarter-end. The Company was in compliance with all such covenants as of March 31, 2022.

As of March 31, 2022, there was $327.8 million of cash drawn and $9.8 million of undrawn letters of credit under the 2019 Credit Agreement, with $162.4 million of net availability for borrowings. As of December 31, 2021, there was $280.7 million cash drawn and $10.1 million of undrawn letters of credit under the 2019 Credit Agreement, with $209.2 million of net availability for borrowings.

9

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED)

(Unaudited)

The following table summarizes the gross borrowings and gross payments under the Company’s revolving credit facilities:

	Three Months Ended March 31,
(in millions)	2022		2021
Gross borrowings	$	55.0	$	45.0
Gross payments	8.2		34.9

Interest Rate Swap

On October 2, 2019, the Company entered into an interest rate swap (the “Swap”) with a notional amount of $75.0 million, as a means of fixing the floating interest rate component on $75.0 million of its variable-rate debt. The Swap is designated as a cash flow hedge, with a maturity date of July 30, 2024.

As a result of the application of hedge accounting treatment, all unrealized gains and losses related to the derivative instrument are recorded in Accumulated other comprehensive loss and are reclassified into operations in the same period in which the hedged transaction affects earnings. Hedge effectiveness is assessed quarterly. The Company does not use derivative instruments for trading or speculative purposes.

The fair value of the Company’s interest rate swaps is derived from a discounted cash flow analysis based on the terms of the contract and the interest rate curve (Level 2 inputs) and measured on a recurring basis in our Condensed Consolidated Balance Sheets.

At March 31, 2022, the fair value of the Swap was an asset of $2.2 million, which was included in Other long-term assets on the Condensed Consolidated Balance Sheet. At December 31, 2021, the fair value of the Swap was a liability of $0.7 million, which was included in Other long-term liabilities on the Condensed Consolidated Balance Sheet. During the three months ended March 31, 2022 and 2021, unrealized pre-tax gains of $2.9 million and $1.1 million, respectively, were recorded in Accumulated other comprehensive loss. No ineffectiveness was recorded in either period.

NOTE 5 – INCOME TAXES

For the three months ended March 31, 2022, the Company recognized income tax expense of $7.1 million, resulting in an effective tax rate of 25.7%. For the three months ended March 31, 2021 the Company recognized income tax expense of $5.0 million, resulting in an effective tax rate of 18.4%. The Company’s income tax expense and effective tax rate in the prior-year quarter were lower primarily due to the recognition of $1.8 million of excess tax benefits associated with stock-based compensation activity.

NOTE 6 – PENSIONS

The following table summarizes the components of Net periodic pension benefit: 

	U.S. Benefit Plan				Non-U.S. Benefit Plan
	Three Months Ended March 31,				Three Months Ended March 31,
(in millions)	2022		2021		2022		2021
Service cost	$	—	$	—	$	—	$	0.1
Interest cost	1.1		1.2		0.2		0.2
Amortization of actuarial loss	0.5		1.0		0.2		0.2
Expected return on plan assets	(1.7)		(2.4)		(0.5)		(0.5)
Net periodic pension benefit	$	(0.1)	$	(0.2)	$	(0.1)	$	—

The items that comprise Net periodic pension benefit, other than service cost, are included as a component of Other income, net on the Condensed Consolidated Statements of Operations.

10

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED)

(Unaudited)

NOTE 7 – COMMITMENTS AND CONTINGENCIES

Financial Commitments

The Company provides indemnifications and other guarantees in the ordinary course of business, the terms of which range in duration and often are not explicitly defined. Specifically, the Company is occasionally required to provide letters of credit and bid and performance bonds to various customers, principally to act as security for retention levels related to casualty insurance policies and to guarantee the performance of subsidiaries that engage in export and domestic transactions. At March 31, 2022, the Company had outstanding performance and financial standby letters of credit, as well as outstanding bid and performance bonds, aggregating to $37.0 million. If any such letters of credit or bonds are called, the Company would be obligated to reimburse the issuer of the letter of credit or bond. The Company believes the likelihood of any currently outstanding letter of credit or bond being called is remote.

The Company has transactions involving the sale of equipment to certain of its customers which include (i) guarantees to repurchase the equipment for a fixed price at a future date and (ii) guarantees to repurchase the equipment from the third-party lender in the event of default by the customer. As of March 31, 2022, both the single year and maximum potential cash payments the Company could be required to make to repurchase equipment under these agreements amounted to $2.6 million. The Company’s risk under these repurchase arrangements would be partially mitigated by the value of the products repurchased as part of the transaction. Historical cash requirements and losses associated with these obligations have not been significant but could increase if customer defaults exceed current expectations.

The Company has certain lease agreements for facilities owned by affiliates which include provisions requiring the Company to guarantee any remaining lease payments in the event of default. As of March 31, 2022, the total amount of future payments guaranteed under these agreements was approximately $1.6 million. The Company believes the likelihood of defaulting on these leases is remote.

Product Warranties

The Company issues product performance warranties to customers with the sale of its products. The specific terms and conditions of these warranties vary depending upon the product sold and country in which the Company does business, with warranty periods generally ranging from one to five years. The Company estimates the costs that may be incurred under its basic limited warranty and records a liability in the amount of such costs at the time the sale of the related product is recognized. Factors that affect the Company’s warranty liability include (i) the number of units under warranty, (ii) historical and anticipated rates of warranty claims and (iii) costs per claim. The Company periodically assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary.

The following table summarizes the changes in the Company’s warranty liabilities during the three months ended March 31, 2022 and 2021:

(in millions)	2022		2021
Balance at January 1	$	9.7	$	10.2
Provisions to expense	1.4		1.6
Payments	(1.8)		(2.4)
Balance at March 31	$	9.3	$	9.4

Legal Proceedings

The Company is subject to various claims, including pending and possible legal actions for product liability and other damages, and other matters arising in the ordinary course of the Company’s business. On a quarterly basis, the Company reviews uninsured material legal claims against the Company and accrues for the costs of such claims as appropriate in the exercise of management’s best judgment and experience. However, due to a lack of factual information available to the Company about a claim, or the procedural stage of a claim, it may not be possible for the Company to reasonably assess either the probability of a favorable or unfavorable outcome of the claim or to reasonably estimate the amount of loss should there be an unfavorable outcome. Therefore, for many claims, the Company cannot reasonably estimate a range of loss.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED)

(Unaudited)

The Company believes, based on current knowledge and after consultation with counsel, that the outcome of such claims and actions will not have a material adverse effect on the Company’s results of operations or financial condition. However, in the event of unexpected future developments, it is possible that the ultimate resolution of such matters, if unfavorable, could have a material adverse effect on the Company’s results of operations, financial condition or cash flow.

Hearing Loss Litigation

The Company has been sued for monetary damages by firefighters who claim that exposure to the Company’s sirens has impaired their hearing and that the sirens are therefore defective. There were 33 cases filed during the period of 1999 through 2004, involving a total of 2,443 plaintiffs, in the Circuit Court of Cook County, Illinois. These cases involved more than 1,800 firefighter plaintiffs from locations outside of Chicago. In 2009, six additional cases were filed in Cook County, involving 299 Pennsylvania firefighter plaintiffs. During 2013, another case was filed in Cook County involving 74 Pennsylvania firefighter plaintiffs.

The trial of the first 27 of these plaintiffs’ claims occurred in 2008, whereby a Cook County jury returned a unanimous verdict in favor of the Company.

An additional 40 Chicago firefighter plaintiffs were selected for trial in 2009. Plaintiffs’ counsel later moved to reduce the number of plaintiffs from 40 to nine. The trial for these nine plaintiffs concluded with a verdict against the Company and for the plaintiffs in varying amounts totaling $0.4 million. The Company appealed this verdict. On September 13, 2012, the Illinois Appellate Court rejected this appeal. The Company thereafter filed a petition for rehearing with the Illinois Appellate Court, which was denied on February 7, 2013. The Company sought further review by filing a petition for leave to appeal with the Illinois Supreme Court on March 14, 2013. On May 29, 2013, the Illinois Supreme Court issued a summary order declining to accept review of this case. On July 1, 2013, the Company satisfied the judgments entered for these plaintiffs, which resulted in final dismissal of these cases.

A third consolidated trial involving eight Chicago firefighter plaintiffs occurred during November 2011. The jury returned a unanimous verdict in favor of the Company at the conclusion of this trial.

Following this trial, on March 12, 2012 the trial court entered an order certifying a class of the remaining Chicago Fire Department firefighter plaintiffs for trial on the sole issue of whether the Company’s sirens were defective and unreasonably dangerous. The Company petitioned the Illinois Appellate Court for interlocutory appeal of this ruling. On May 17, 2012, the Illinois Appellate Court accepted the Company’s petition. On June 8, 2012, plaintiffs moved to dismiss the appeal, agreeing with the Company that the trial court had erred in certifying a class action trial in this matter. Pursuant to plaintiffs’ motion, the Illinois Appellate Court reversed the trial court’s certification order.

Thereafter, the trial court scheduled a fourth consolidated trial involving three firefighter plaintiffs, which began in December 2012. Prior to the start of this trial, the claims of two of the three firefighter plaintiffs were dismissed. On December 17, 2012, the jury entered a complete defense verdict for the Company.

Following this defense verdict, plaintiffs again moved to certify a class of Chicago Fire Department plaintiffs for trial on the sole issue of whether the Company’s sirens were defective and unreasonably dangerous. Over the Company’s objection, the trial court granted plaintiffs’ motion for class certification on March 11, 2013 and scheduled a class action trial to begin on June 10, 2013. The Company filed a petition for review with the Illinois Appellate Court on March 29, 2013 seeking reversal of the class certification order.

On June 25, 2014, a unanimous three-judge panel of the First District Illinois Appellate Court issued its opinion reversing the class certification order of the trial court. Specifically, the Appellate Court determined that the trial court’s ruling failed to satisfy the class-action requirements that the common issues of the firefighters’ claims predominate over the individual issues and that there is an adequate representative for the class. During a status hearing on October 8, 2014, plaintiffs represented to the Court that they would again seek to certify a class of firefighters on the issue of whether the Company’s sirens were defective and unreasonably dangerous. On January 12, 2015, plaintiffs filed motions to amend their complaints to add class action allegations with respect to Chicago firefighter plaintiffs, as well as the approximately 1,800 firefighter plaintiffs from locations outside of Chicago. On March 11, 2015, the trial court granted plaintiffs’ motions to amend their complaints. On April 24, 2015, the cases were transferred to Cook County chancery court to decide the class certification issues. On March 23, 2018, plaintiffs filed a motion to certify as a class all firefighters from the Chicago Fire Department who have filed lawsuits in this matter. The Company objected to certification and the parties engaged in discovery and other matters related to this motion.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED)

(Unaudited)

Thereafter, on December 20, 2021, the parties executed a settlement agreement to resolve claims of approximately 462 firefighters still involved in the Cook County litigation, as well as the DuPage County litigation discussed below. Under the terms of the settlement agreement, the Company has agreed to pay a lump sum of $0.2 million to resolve the claims of these firefighters. The Company has agreed to pay this lump sum amount based upon its assessment of firefighters who meet minimal bilateral hearing loss standards, which is a subset of the larger group referenced above. The settlement agreement does not require the payment of any attorney fees by the Company. The settlement agreement also provides that plaintiffs’ attorney will withdraw from representing firefighters who do not agree to the settlement. The Company has discretion to void the settlement agreement if less than 93% of these firefighters agree to settle their claims; the settlement agreement will be voided if less than 70% of eligible firefighters agree to the settlement. The settlement agreement is subject to review and approval by the Court.

The Company also filed motions to dismiss cases involving firefighters who worked for fire departments located outside of the State of Illinois based on improper venue. On February 24, 2017, the Circuit Court of Cook County entered orders dismissing the cases of 1,770 such firefighter plaintiffs from the jurisdiction of the State of Illinois. Pursuant to these orders, these plaintiffs had six months thereafter to refile their cases in jurisdictions where these firefighters are located. Prior to this six-month deadline, attorneys representing some of these plaintiffs contacted the Company regarding possible settlement of their cases. During the year ended December 31, 2017, the Company entered into a global settlement agreement with two attorneys who represented approximately 1,090 of these plaintiffs. Under the terms of the settlement agreement, the Company offered $700 per plaintiff to settle these cases and 717 plaintiffs accepted this offer as a final settlement. The settlement agreement did not require the payment of any attorney fees by the Company. The attorneys representing these plaintiffs agreed to withdraw from representing plaintiffs who did not respond to the settlement offer. It is the Company’s position that the non-settling plaintiffs who failed to timely refile their cases following the February 2017 dismissal by the Circuit Court of Cook County are now barred from doing so by the statute of limitations. The Company filed a venue motion seeking to transfer to DuPage County cases involving 10 plaintiffs who reside and work in Illinois but outside of Cook County. The Court granted this motion on June 28, 2017.

The Company was also sued on this issue outside of the Cook County, Illinois venue. Between 2007 and 2009, a total of 71 lawsuits involving 71 plaintiffs were filed in the Court of Common Pleas, Philadelphia County, Pennsylvania. Three of these cases were dismissed pursuant to pretrial motions filed by the Company. Another case was voluntarily dismissed. Prior to trial in four cases, the Company paid nominal sums to obtain dismissals.

Three trials occurred in Philadelphia involving these cases filed in 2007 through 2009. The first trial involving one of these plaintiffs occurred in 2010, when the jury returned a verdict for the plaintiff. The jury found that the Company’s siren was not defectively designed, but that the Company negligently constructed the siren. The jury awarded damages in the amount of less than $0.1 million. The Company appealed this verdict. Another trial, involving nine Philadelphia firefighter plaintiffs, also occurred in 2010 when the jury returned a defense verdict for the Company as to all claims and all plaintiffs involved in that trial. The third trial, also involving nine Philadelphia firefighter plaintiffs, was completed during 2010 when the jury returned a defense verdict for the Company as to all claims and all plaintiffs involved in that trial.

Following defense verdicts in the last two Philadelphia trials, the Company negotiated settlements with respect to all remaining filed cases in Philadelphia at that time, as well as other firefighter claimants represented by the attorney who filed the Philadelphia cases. On January 4, 2011, the Company entered into a Global Settlement Agreement (the “Settlement Agreement”) with the law firm of the attorney representing the Philadelphia claimants, on behalf of 1,125 claimants the firm represented (the “Claimants”) and who had asserted product claims against the Company (the “Claims”). Three hundred eight of the Claimants had lawsuits pending against the Company in Cook County, Illinois.

The Settlement Agreement provided that the Company pay a total amount of $3.8 million (the “Settlement Payment”) to settle the Claims (including the costs, fees and other expenses of the law firm in connection with its representation of the Claimants), subject to certain terms, conditions and procedures set forth in the Settlement Agreement. In order for the Company to be required to make the Settlement Payment: (i) each Claimant who agreed to settle his or her claims had to sign a release acceptable to the Company (a “Release”), (ii) each Claimant who agreed to the settlement and who was a plaintiff in a lawsuit, had to dismiss his or her lawsuit with prejudice, (iii) by April 29, 2011, at least 93% of the Claimants identified in the Settlement Agreement must have agreed to settle their claims and provide a signed Release to the Company and (iv) the law firm had to withdraw from representing any Claimants who did not agree to the settlement, including those who filed lawsuits. If the conditions to the settlement were met, but less than 100% of the Claimants agreed to settle their Claims and sign a Release, the Settlement Payment would be reduced by the percentage of Claimants who did not agree to the settlement.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED)

(Unaudited)

On April 22, 2011, the Company confirmed that the terms and conditions of the Settlement Agreement had been met and made a payment of $3.6 million to conclude the settlement. The amount was based upon the Company’s receipt of 1,069 signed releases provided by Claimants, which was 95% of all Claimants identified in the Settlement Agreement.

The Company generally denies the allegations made in the claims and lawsuits by the Claimants and denies that its products caused any injuries to the Claimants. Nonetheless, the Company entered into the Settlement Agreement for the purpose of minimizing its expenses, including legal fees, and avoiding the inconvenience, uncertainty and distraction of the claims and lawsuits.

During April through October 2012, 20 new cases were filed in the Court of Common Pleas, Philadelphia County, Pennsylvania. These cases were filed on behalf of 20 Philadelphia firefighters and involved various defendants in addition to the Company. Five of these cases were subsequently dismissed. The first trial involving these 2012 Philadelphia cases occurred during December 2014 and involved three firefighter plaintiffs. The jury returned a verdict in favor of the Company. Following this trial, all of the parties agreed to settle cases involving seven firefighter plaintiffs set for trial during January 2015 for nominal amounts per plaintiff.

In January 2015, plaintiffs’ attorneys filed two new complaints in the Court of Common Pleas, Philadelphia, Pennsylvania on behalf of approximately 70 additional firefighter plaintiffs. The vast majority of the firefighters identified in these complaints were located outside of Pennsylvania. One of the complaints in these cases, which involved 11 firefighter plaintiffs from the District of Columbia, was removed to federal court in the Eastern District of Pennsylvania. Plaintiffs voluntarily dismissed all claims in this case on May 31, 2016. The Company thereafter moved to recover various fees and costs in this case, asserting that plaintiffs’ counsel failed to properly investigate these claims prior to filing suit. The Court granted this motion on April 25, 2017, awarding $0.1 million to the Company (the “Order”). After plaintiffs appealed this Order, the United States Court of Appeals for the Third Circuit affirmed the lower court decision awarding fees and costs to the Company.

With respect to claims of other out-of-state firefighters involved in these two cases, the Company moved to dismiss these claims as improperly filed in Pennsylvania. The Court granted this motion and dismissed these claims on November 5, 2015. During August through December 2015, another nine new cases were filed in the Court of Common Pleas, Philadelphia County, Pennsylvania. These cases involved a total of 193 firefighters, most of whom were located outside of Pennsylvania. The Company again moved to dismiss all claims filed by out-of-state firefighters in these cases as improperly filed in Pennsylvania. On May 24, 2016, the Court granted this motion and dismissed these claims. Plaintiffs appealed this decision and, on September 25, 2018, the appellate court reversed this dismissal. The Company then filed a petition with the appellate court requesting that the court reconsider its ruling. On December 7, 2018, the appellate court granted the Company’s petition and withdrew its prior decision. On June 25, 2020, the Court issued a decision affirming the trial court’s dismissal of these cases with prejudice.

On May 13, 2016, four new cases were filed in Philadelphia state court, involving a total of 55 Philadelphia firefighters who live in Pennsylvania. During August 2016, the Company settled a case for nominal amounts involving four Philadelphia firefighters that had been set for trial in Philadelphia state court during September 2016. During 2017, plaintiffs filed additional cases in the Court of Common Pleas, Philadelphia County, involving over 100 Philadelphia firefighter plaintiffs. During January 2017, plaintiffs filed a motion to consolidate and bifurcate, similar to a motion filed in the Pittsburgh hearing loss cases, as described below. The Company filed an opposition to this motion. These cases were then transferred to the mass tort program in Philadelphia for pretrial purposes. Plaintiffs’ counsel thereafter dismissed several plaintiffs. During November 2017, a trial involving one Philadelphia firefighter occurred. The jury returned a verdict in favor of the Company in this trial. Prior to a dismissal of these cases pursuant to the Tolling Agreement, discussed below, there was a total of 75 firefighters involved in cases pending in the Philadelphia mass tort program.

During March 2014, an action also was brought in the Court of Common Pleas of Erie County, Pennsylvania on behalf of 61 firefighters. This case likewise involves various defendants in addition to the Company. After the Company filed pretrial motions, 33 Erie County firefighter plaintiffs voluntarily dismissed their claims. Prior to a dismissal of these cases pursuant to the Tolling Agreement, discussed below, there was a total of 28 firefighters involved in cases filed in Erie County.

During August 2017, five cases involving 70 firefighter plaintiffs were filed in Lackawanna County, Pennsylvania. These cases involve firefighter plaintiffs who originally filed in Cook County several years ago and were dismissed pursuant to the Company’s forum nonconveniens motion.

On September 17, 2014, 20 lawsuits, involving a total of 193 Buffalo Fire Department firefighters, were filed in the Supreme Court of the State of New York, Erie County. All of the cases filed in Erie County, New York were removed to federal court in

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FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED)

(Unaudited)

the Western District of New York. Plaintiffs filed a motion to consolidate and bifurcate these cases, similar to the motion filed in the Pittsburgh hearing loss cases, as described below. The Company filed an opposition to the motion. During February 2015, a lawsuit involving one New York City firefighter plaintiff was filed in the Supreme Court of the State of New York, New York County. The plaintiff named the Company as well as several other parties as defendants. That case subsequently was transferred to federal court in the Northern District of New York and thereafter dismissed. During April 2015 through January 2016, 29 new cases involving a total of 235 firefighters were filed in various counties in the New York City area. During December 2016 through October 2017, additional cases were filed in these jurisdictions. On February 5, 2018, the Company was served with a complaint in an additional case filed in Kings County, New York. This case involved one plaintiff. Prior to a dismissal of these cases pursuant to the Tolling Agreement, discussed below, there was a total of 536 firefighters involved in cases filed in the State of New York.

During November 2015, the Company was served with a complaint filed in Union County, New Jersey state court, involving 34 New Jersey firefighters. This case was transferred to federal court in the District of New Jersey. During the period from January through May 2016, eight additional cases were filed in various New Jersey state courts. Most of the firefighters in these cases resided in New Jersey and worked at New Jersey fire departments. During December 2016, a case involving one New Jersey firefighter was filed in the United States District Court of New Jersey. On May 2, 2017, plaintiffs filed a motion to consolidate and bifurcate in the pending federal court case in New Jersey. This motion was similar to bifurcation motions filed by plaintiffs in Pittsburgh, Buffalo and Philadelphia. The Court denied the motion as premature. Pursuant to a petition filed by both parties, all New Jersey state court cases were consolidated for pretrial purposes. Prior to a dismissal of these cases pursuant to the Tolling Agreement, discussed below, there was a total of 61 firefighters involved in cases filed in New Jersey.

During May through October 2016, nine cases were filed in Suffolk County, Massachusetts state court, naming the Company as a defendant. These cases involved 194 firefighters who lived and worked in the Boston area. During August 2017, plaintiffs filed additional cases in Suffolk County court. The Company moved to transfer various cases filed in Suffolk County to other counties in Massachusetts where plaintiffs resided and worked. Prior to a dismissal of these cases pursuant to the Tolling Agreement, discussed below, there was a total of 218 firefighters involved in cases filed in Massachusetts.

During August and September 2017, plaintiffs’ attorneys filed additional hearing loss cases in Florida. The Company was the only named defendant. These cases were filed in several different counties in Florida, including Tampa, Miami and Orlando municipalities. Prior to a dismissal of these cases pursuant to the Tolling Agreement, discussed below, there was a total of 166 firefighters involved in cases filed in Florida.

During April through July 2013, additional cases were filed in Allegheny County, Pennsylvania on behalf of 247 plaintiff firefighters from Pittsburgh and against various defendants, including the Company. During May 2016, two additional cases were filed against the Company in Allegheny County involving 19 Pittsburgh firefighters. After the Company filed pretrial motions, the Court dismissed claims of 55 Pittsburgh firefighter plaintiffs. The Court scheduled trials for May, September and November 2016, for eight firefighters per trial. Prior to the first scheduled trial in Pittsburgh, the Court granted the Company’s motion for summary judgment and dismissed all claims asserted by plaintiff firefighters involved in this trial. Following an appeal by the plaintiff firefighters, the appellate court affirmed this dismissal. The next trial for six Pittsburgh firefighters started on November 7, 2016. Shortly after this trial began, plaintiffs’ counsel moved for a mistrial because a key witness suddenly became unavailable. The Court granted this motion and rescheduled this trial for March 6, 2017. During January 2017, plaintiffs also moved to consolidate and bifurcate trials involving Pittsburgh firefighters. In particular, plaintiffs sought one trial involving liability issues to apply to all Pittsburgh firefighters who filed suit against the Company. The Company filed an opposition to this motion. On April 18, 2017, the trial court granted plaintiffs’ motion to bifurcate the next Pittsburgh trial. Pursuant to a motion for clarification filed by the Company, the Court ruled that the bifurcation order would only apply to six plaintiffs who were part of the next trial group in Pittsburgh. The Company thereafter sought an interlocutory appeal of the Court’s bifurcation order. The appellate court declined to accept the appeal at that time. A bifurcated trial began on September 27, 2017 in Allegheny County, Pennsylvania. Prior to and during trial, two plaintiffs were dismissed, resulting in four plaintiffs remaining for trial. After approximately two weeks of trial, the jury found that the Company’s siren product was not defective or unreasonably dangerous and rendered a verdict in favor of the Company.

A second trial involving Pittsburgh firefighters began during January 2018. At the outset of this trial, plaintiffs’ attorneys, who represent all firefighters who have filed cases in Allegheny County, Philadelphia, Buffalo, New Jersey, Massachusetts, and Florida, as described above, requested that the Company consider settlement of various cases. This trial was continued to allow the parties to further discuss possible settlement. During March 2018, the parties agreed in principle on a framework (the “Settlement Framework”) to resolve hearing loss claims and cases in all jurisdictions involved in the hearing loss litigation except in Cook County and Lackawanna County, and excluding one case involving one firefighter in New York City. The

15

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED)

(Unaudited)

firefighters excluded from the Settlement Framework are represented by different attorneys. The Company has agreed to settle the cases in Lackawanna County and settled the case involving one firefighter in New York City for nominal amounts. Pursuant to the Settlement Framework, the Company would pay $700 to each firefighter who filed a lawsuit and is eligible to be part of the settlement. The Company would pay $300 to each firefighter who has not yet filed a case and is eligible to be part of the settlement. The settlement agreement does not include the payment of any attorney fees by the Company. To be eligible for settlement, among other things, firefighters must provide proof that they have high frequency noise-induced hearing loss. There are approximately 3,700 firefighters whose claims may be considered as part of this settlement, including approximately 1,320 firefighters who have ongoing filed lawsuits. This Settlement Framework was finalized in a global settlement agreement executed on November 4, 2019. Pursuant to this global settlement agreement, the parties are now in the process of determining how many of the approximately 3,700 firefighters will be eligible to participate in the settlement. In order to minimize the parties’ respective legal costs and expenses during this settlement process, on July 5, 2018, the parties entered into a tolling agreement (the “Tolling Agreement”). Pursuant to the Tolling Agreement, counsel for the settling firefighters agreed to dismiss the pending lawsuits in all jurisdictions except for the Allegheny County (Pittsburgh), Pennsylvania cases, and the Company agreed to a tolling of any statute of limitations applicable to the dismissed cases. The Tolling Agreement continued in place until the parties executed the global settlement agreement on November 4, 2019. After execution of the global settlement agreement, the Allegheny County (Pittsburgh) cases were dismissed. The global settlement agreement requires plaintiffs’ attorneys to withdraw from representing firefighters who elect not to participate in this settlement.

As of March 31, 2022, the Company has recognized an estimated liability for the potential settlement amount under the Settlement Framework. While it is reasonably possible that the ultimate resolution of this matter may result in a loss in excess of the amount accrued, the incremental loss is not expected to be material.

From 2007 through 2009, firefighters also brought hearing loss claims against the Company in New Jersey, Missouri, Maryland and Kings County, New York. All of those cases, however, were dismissed prior to trial, including four cases in the Supreme Court of Kings County, New York that were dismissed upon the Company’s motion in 2008. On appeal, the New York appellate court affirmed the trial court’s dismissal of these cases.

NOTE 8 – EARNINGS PER SHARE

The Company computes earnings per share (“EPS”) in accordance with Accounting Standards Codification (“ASC”) 260, Earnings per Share, which requires that non-vested restricted stock containing non-forfeitable dividend rights should be treated as participating securities pursuant to the two-class method. Under the two-class method, net income is reduced by the amount of dividends declared in the period for common stock and participating securities. The remaining undistributed earnings are then allocated to common stock and participating securities as if all of the net income for the period had been distributed. The amounts of distributed and undistributed earnings allocated to participating securities for the three months ended March 31, 2022 and 2021 were insignificant and did not materially impact the calculation of basic or diluted EPS.

Basic EPS is computed by dividing income available to common stockholders by the weighted average number of shares of common stock and non-vested restricted stock awards outstanding for the period.

Diluted EPS is computed using the weighted average number of shares of common stock and non-vested restricted stock awards outstanding for the year, plus the effect of dilutive potential common shares outstanding during the period. The dilutive effect of common stock equivalents is determined using the more dilutive of the two-class method or alternative methods. The Company uses the treasury stock method to determine the potentially dilutive impact of our employee stock options and restricted stock units, and the contingently issuable method for our performance-based restricted stock unit awards.

For the three months ended March 31, 2022, options to purchase 0.2 million shares of the Company’s common stock had an anti-dilutive effect on EPS, and accordingly, were excluded from the calculation of diluted EPS. For the three months ended March 31, 2021, the number of options to purchase shares of the Company’s common stock that had an anti-dilutive effect on EPS was immaterial.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED)

(Unaudited)

The following table reconciles Net income to basic and diluted EPS:

	Three Months Ended March 31,
(in millions, except per share data)	2022		2021
Net income	$	20.5	$	22.2
Weighted average shares outstanding – Basic	60.7		60.6
Dilutive effect of common stock equivalents	0.7		1.1
Weighted average shares outstanding – Diluted	61.4		61.7
Earnings per share:
Basic	$	0.34	$	0.37
Diluted	0.33		0.36

NOTE 9 – STOCKHOLDERS’ EQUITY

Dividends

On February 18, 2022, the Company’s Board of Directors (the “Board”) declared a quarterly cash dividend of $0.09 per common share. The dividend totaled $5.5 million and was distributed on April 1, 2022 to stockholders of record at the close of business on March 18, 2022.

On April 26, 2022, the Board declared a quarterly cash dividend of $0.09 per common share payable on June 3, 2022 to stockholders of record at the close of business on May 20, 2022.

Stock Repurchase Program

In November 2014, the Board authorized a stock repurchase program of up to $75.0 million of the Company’s common stock. In March 2020, the Board authorized an additional stock repurchase program of up to $75.0 million of the Company’s common stock. The March 2020 program supplements the Board’s prior authorization under the November 2014 program, which remains in effect.

The stock repurchase programs are intended primarily to facilitate purchases of Company stock as a means to provide cash returns to stockholders, enhance stockholder returns and manage the Company’s capital structure. Under its stock repurchase programs, the Company is authorized to repurchase, from time to time, shares of its outstanding common stock. Stock repurchases by the Company are subject to market conditions and other factors and may be commenced, suspended or discontinued at any time.

During the three months ended March 31, 2022, the Company repurchased 395,370 shares for a total of $13.6 million under its stock repurchase programs. No shares were repurchased under the stock repurchase programs during the three months ended March 31, 2021.

Accumulated Other Comprehensive Loss

The following tables summarize the changes in each component of Accumulated other comprehensive loss, net of tax in the three months ended March 31, 2022 and 2021:

(in millions) (a)	Actuarial Losses		Prior Service Costs		Foreign Currency Translation		Interest Rate Swaps		Total
Balance at January 1, 2022	$	(67.9)	$	(2.4)	$	(3.4)	$	(0.5)	$	(74.2)
Other comprehensive income (loss) before reclassifications	0.5		—		(1.6)		1.9		0.8
Amounts reclassified from accumulated other comprehensive loss	0.5		—		—		0.2		0.7
Net current-period other comprehensive income (loss)	1.0		—		(1.6)		2.1		1.5
Balance at March 31, 2022	$	(66.9)	$	(2.4)	$	(5.0)	$	1.6	$	(72.7)

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED)

(Unaudited)

(in millions) (a)	Actuarial Losses		Prior Service Costs		Foreign Currency Translation		Interest Rate Swaps		Total
Balance at January 1, 2021	$	(88.2)	$	(2.6)	$	1.3	$	(2.2)	$	(91.7)
Other comprehensive (loss) income before reclassifications	(0.2)		—		(1.2)		1.0		(0.4)
Amounts reclassified from accumulated other comprehensive loss	0.9		—		—		(0.2)		0.7
Net current-period other comprehensive income (loss)	0.7		—		(1.2)		0.8		0.3
Balance at March 31, 2021	$	(87.5)	$	(2.6)	$	0.1	$	(1.4)	$	(91.4)

(a)    Amounts in parentheses indicate losses.

The following table summarizes the amounts reclassified from Accumulated other comprehensive loss, net of tax, in the three months ended March 31, 2022 and 2021 and the affected line item in the Condensed Consolidated Statements of Operations:

Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss				Affected Line Item in Condensed Consolidated Statements of Operations
	2022		2021
(in millions) (a)
Amortization of actuarial losses of defined benefit pension plans	$	(0.7)	$	(1.2)	Other income, net
Interest rate swaps	(0.2)		0.2		Interest expense
Total before tax	(0.9)		(1.0)
Income tax benefit	0.2		0.3		Income tax expense
Total reclassifications for the period, net of tax	$	(0.7)	$	(0.7)

(a)    Amounts in parentheses indicate losses.

NOTE 10 – SEGMENT INFORMATION

The Company has two reportable segments: the Environmental Solutions Group and the Safety and Security Systems Group. Business units are organized under each reportable segment because they share certain characteristics, such as technology, marketing, distribution and product application, which create long-term synergies.

The following tables summarize the Company’s operations by segment, including Net sales, Operating income (loss), and Total assets:

	Three Months Ended March 31,
(in millions)	2022		2021
Net sales:
Environmental Solutions	$	274.2	$	228.1
Safety and Security Systems	56.0		50.7
Total net sales	$	330.2	$	278.8
Operating income (loss):
Environmental Solutions	$	26.8	$	27.1
Safety and Security Systems	7.9		7.2
Corporate and eliminations	(6.2)		(6.5)
Total operating income	28.5		27.8
Interest expense	1.3		1.1
Other income, net	(0.4)		(0.5)
Income before income taxes	$	27.6	$	27.2

18

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED)

(Unaudited)

(in millions)	March 31, 2022		December 31, 2021
Total assets:
Environmental Solutions	$	1,129.6	$	1,098.2
Safety and Security Systems	258.5		226.9
Corporate and eliminations	37.0		41.0
Total assets	$	1,425.1	$	1,366.1

NOTE 11 – FAIR VALUE MEASUREMENTS

The Company uses a three-level fair value hierarchy that prioritizes the inputs used to measure fair value. This hierarchy maximizes the use of observable inputs and minimizes the use of unobservable inputs. Observable inputs are developed based on market data obtained from independent sources, while unobservable inputs reflect the Company’s assumptions about valuation based on the best information available in the circumstances. The three levels of inputs are classified as follows:

•Level 1 — quoted prices in active markets for identical assets or liabilities;

•Level 2 — observable inputs, other than quoted prices included in Level 1, such as quoted prices for markets that are not active, or other inputs that are observable or can be corroborated by observable market data; and

•Level 3 — unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities, including certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

In determining fair value, the Company uses various valuation approaches within the fair value measurement framework. The valuation methodologies used for the Company’s assets and liabilities measured at fair value and their classification in the valuation hierarchy are summarized below.

Cash Equivalents

Cash equivalents primarily consist of time-based deposits and interest-bearing instruments with maturities of three months or less. The Company classified cash equivalents as Level 1 due to the short-term nature of these instruments and measured the fair value based on quoted prices in active markets for identical assets.

Interest Rate Swaps

As described in Note 4 – Debt, the Company may, from time to time, execute interest rate swaps as a means of fixing the floating interest rate component on a portion of its floating-rate debt. The Company classifies its interest rate swaps as Level 2 due to the use of a discounted cash flow model based on the terms of the contract and the interest rate curve (Level 2 inputs) to calculate the fair value of the swaps.

Contingent Consideration

The Company has contingent obligations to transfer up to $15.5 million and $7.5 million to the former owners of Mark Rite Lines Equipment Company, Inc. (“MRL”) and Deist Industries, Inc. and certain of its affiliates (collectively, “Deist”), respectively, if specified financial results are met over future reporting periods (i.e., an earn-out). The MRL and Deist acquisitions were completed on July 1, 2019 and December 30, 2021, respectively. The contingent earn-out payments, if earned, would be due to be paid following the third anniversary of the closing of the respective acquisitions.

Liabilities for contingent consideration are measured at fair value each reporting period, with the acquisition-date fair value included as part of the consideration transferred. Subsequent changes in fair value are included as a component of Acquisition and integration-related expenses on the Condensed Consolidated Statements of Operations.

The Company uses an income approach to value the contingent consideration obligation based on the present value of risk-adjusted future cash flows under either a scenario-based or option-pricing method, as appropriate. Due to the lack of relevant observable market data over fair value inputs, such as prospective financial information or probabilities of future events as of March 31, 2022, the Company has classified the contingent consideration liability within Level 3 of the fair value hierarchy outlined in ASC 820, Fair Value Measurements.

19

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS — (CONTINUED)

(Unaudited)

The following table summarizes the Company’s assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2022:

	Fair Value Measurement at Reporting Date Using
(in millions)	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	0.1	$	—	$	—	$	0.1
Interest rate swap	—		2.2		—		2.2
Liabilities:
Contingent consideration	—		—		2.7		2.7

The following table provides a roll-forward of the fair value of recurring Level 3 fair value measurements in the three months ended March 31, 2022 and 2021:

(in millions)	2022		2021
Contingent consideration liability, at January 1	$	2.7	$	4.2
Total losses included in earnings	—		—
Contingent consideration liability, at March 31	$	2.7	$	4.2

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Item 2.     Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”) is designed to provide information that is supplemental to, and should be read together with, the condensed consolidated financial statements and the accompanying notes contained in this Form 10-Q, as well as Federal Signal Corporation’s Annual Report on Form 10-K for the year ended December 31, 2021. References herein to the “Company,” “we,” “our,” or “us” refer collectively to Federal Signal Corporation and its subsidiaries. Information in MD&A is intended to assist the reader in obtaining an understanding of (i) the condensed consolidated financial statements, (ii) the Company’s business segments and how the results of those segments impact the Company’s results of operations and financial condition as a whole and (iii) how certain accounting principles affect the Company’s condensed consolidated financial statements. The Company’s results for interim periods should not be regarded as necessarily indicative of results that may be expected for the entire year, which may differ materially due to, among other things, the risk factors described under Part I, Item 1A, Risk Factors, of the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, which was filed with the SEC on March 1, 2022.

Executive Summary

The Company is a leading global manufacturer and supplier of (i) vehicles and equipment for maintenance and infrastructure end-markets, including sewer cleaners, industrial vacuum loaders, vacuum- and hydro-excavation trucks (collectively, “safe-digging trucks”), street sweepers, road-marking and line-removal equipment, waterblasting equipment, dump truck bodies, trailers and metal extraction support equipment, and (ii) safety, security and communication equipment, such as lights, sirens and warning systems. In addition, we sell parts and provide service, repair, equipment rentals and training as part of a comprehensive aftermarket offering to our customer base. We operate 20 principal manufacturing facilities in five countries and provide products and integrated solutions to municipal, governmental, industrial and commercial customers in all regions of the world.

As described in Note 10 – Segment Information to the accompanying condensed consolidated financial statements, the Company’s business units are organized in two reportable segments: the Environmental Solutions Group and the Safety and Security Systems Group.

Coronavirus Update

During the three months ended March 31, 2022, customer demand for our product and service offerings continued at unprecedented levels, with our first quarter orders of $453 million representing the highest quarterly orders on record, surpassing the previous high that was established in the fourth quarter of 2021, and contributing to a record backlog of $751 million as of March 31, 2022.

However, as we had anticipated, the direct and indirect effects of the ongoing coronavirus pandemic continued to impact our ability to maximize production levels during the three months ended March 31, 2022. Specifically, the increased demand for our products combined with global supply chain disruptions have affected our ability to obtain a sufficient quantity of raw materials and purchased components, including chassis and hydraulics, that are necessary to our production processes and to deliver products to our customers. With these supply chain challenges, we have also experienced increases in the cost of raw materials, such as steel, and have taken measures to mitigate the associated impacts, such as implementing price increases and surcharges. From a labor perspective, the Company experienced an escalated level of coronavirus-related absences at several locations early in the year, which improved as the first quarter progressed. While we continue to work to mitigate these challenges as they arise, we cannot provide assurance that such efforts would continue to be successful in addressing a further significant deterioration in the global supply chain, if applicable, which could impact our ability to service our customers, effectively roll out and realize price increases to offset the effects of commodity inflation and sustain our profit margins.

We continue to closely monitor the impact of the coronavirus pandemic, including emerging variants, on our business, including how it is affecting our employees, customers, supply chain and distribution network. The overall magnitude of the direct and indirect impact of the pandemic on our operating and financial results remains uncertain and will largely depend on the duration of the pandemic and the measures implemented in response, as well as the effect on our customers and suppliers.

Operating Results

Net sales for the three months ended March 31, 2022 increased by $51.4 million, or 18%, compared to the prior-year quarter, inclusive of the effects of acquisitions and pricing actions. Our Environmental Solutions Group reported a net sales increase of $46.1 million, or 20%, primarily due to a $12.1 million improvement in aftermarket revenues and increases in sales of safe-digging trucks, dump truck bodies, metal extraction support equipment and trailers of $10.6 million, $8.4 million, $5.2 million and $3.2 million, respectively. Within our Safety and Security Systems Group, net sales increased by $5.3 million, or 10%, primarily due to a $5.5 million improvement in sales of public safety equipment.

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Operating income for the three months ended March 31, 2022 increased by $0.7 million, or 3%, compared to the prior-year quarter, primarily driven by the $6.9 million improvement in gross profit, partially offset by the $5.4 million increase in SEG&A expenses and a $0.7 million increase in amortization expense. Consolidated operating margin for the three months ended March 31, 2022 was 8.6%, compared to 10.0% in the prior-year quarter.

Income before income taxes for the three months ended March 31, 2022 increased by $0.4 million, or 1%, compared to the prior-year quarter. The increase resulted from the higher operating income, partially offset by a $0.2 million increase in interest expense and a $0.1 million decrease in other income.

Net income for the three months ended March 31, 2022 decreased by $1.7 million compared to the prior-year quarter, largely due to a $2.1 million increase in income tax expense, partially offset by the aforementioned increase in income before taxes. The effective tax rate for the three months ended March 31, 2022 was 25.7%, compared to 18.4% in the prior-year quarter. We currently expect our full-year effective tax rate to be approximately 25%.

Total orders for the three months ended March 31, 2022 were $453 million, an increase of $69 million, or 18%, as compared to the prior-year quarter. Our Environmental Solutions Group reported total orders of $388 million in the three months ended March 31, 2022, an increase of $63 million, or 20% in comparison to the prior-year quarter. Orders in the three months ended March 31, 2022 within our Safety and Security Systems Group were $65 million, an increase of $5 million, or 9%, compared to the prior-year quarter.

Our consolidated backlog at March 31, 2022 was $751 million, an improvement of $342 million, or 83%, compared to the prior-year quarter.

Results of Operations

The following table summarizes our Condensed Consolidated Statements of Operations and illustrates the key financial indicators used to assess our consolidated financial results:

	Three Months Ended March 31,
($ in millions, except per share data)	2022			2021			Change
Net sales	$	330.2		$	278.8		$	51.4
Cost of sales	254.5			210.0			44.5
Gross profit	75.7			68.8			6.9
Selling, engineering, general and administrative expenses	43.6			38.2			5.4
Amortization expense	3.3			2.6			0.7
Acquisition and integration-related expenses	0.3			0.2			0.1
Operating income	28.5			27.8			0.7
Interest expense	1.3			1.1			0.2
Other income, net	(0.4)			(0.5)			0.1
Income before income taxes	27.6			27.2			0.4
Income tax expense	7.1			5.0			2.1
Net income	$	20.5		$	22.2		$	(1.7)
Operating data:
Operating margin	8.6		%	10.0		%	(1.4)		%
Diluted earnings per share	$	0.33		$	0.36		$	(0.03)
Total orders	452.6			384.1			68.5
Backlog	751.2			409.5			341.7
Depreciation and amortization	13.4			12.2			1.2

Net sales

Net sales for the three months ended March 31, 2022 increased by $51.4 million, or 18%, compared to the prior-year quarter, inclusive of the effects of acquisitions and pricing actions. The Environmental Solutions Group reported a net sales increase of $46.1 million, or 20%, primarily due to a $12.1 million improvement in aftermarket revenues and increases in sales of safe-digging trucks, dump truck bodies, metal extraction support equipment and trailers of $10.6 million, $8.4 million, $5.2 million

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and $3.2 million, respectively. Within the Safety and Security Systems Group, net sales increased by $5.3 million, or 10%, primarily due to a $5.5 million improvement in sales of public safety equipment.

Cost of sales

Cost of sales increased by $44.5 million, or 21%, for the three months ended March 31, 2022 compared to the prior-year quarter, largely due to an increase of $40.6 million, or 23%, within the Environmental Solutions Group, primarily related to increased sales volumes, inclusive of acquisition effects, higher material costs, and a $0.4 million increase in depreciation expense. Within the Safety and Security Systems Group, cost of sales increased by $3.9 million, or 12%, primarily related to higher sales volumes and increased material and freight costs.

Gross profit

Gross profit increased by $6.9 million, or 10%, for the three months ended March 31, 2022 compared to the prior-year quarter, primarily due to a $5.5 million improvement within the Environmental Solutions Group and a $1.4 million increase within the Safety and Security Systems Group. Gross profit as a percentage of revenues (“gross profit margin”) for the three months ended March 31, 2022 was 22.9%, compared to 24.7% in the prior-year quarter, primarily due to reductions in the Environmental Solutions Group and the Safety and Security Systems Group of 170 basis points and 100 basis points, respectively.

Selling, engineering, general and administrative expenses (“SEG&A”)

SEG&A expenses for the three months ended March 31, 2022 increased by $5.4 million, or 14%, compared to the prior-year quarter, primarily due to increases of $5.0 million and $0.7 million within the Environmental Solutions Group and the Safety and Security Systems Group, respectively, partially offset by a $0.3 million reduction in Corporate SEG&A expenses. As a percentage of net sales, SEG&A expenses were 13.2% in the current-year quarter, down from 13.7% in the prior-year quarter.

Operating income

Operating income for the three months ended March 31, 2022 increased by $0.7 million, or 3%, compared to the prior-year quarter, primarily driven by the $6.9 million improvement in gross profit, partially offset by the $5.4 million increase in SEG&A expenses and a $0.7 million increase in amortization expense. Consolidated operating margin for the three months ended March 31, 2022 was 8.6%, compared to 10.0% in the prior-year quarter.

Interest expense

Interest expense for the three months ended March 31, 2022 increased by $0.2 million, in comparison to the corresponding period in the prior year, largely due to higher average debt levels.

Other income, net

Other income, net, for the three months ended March 31, 2022 decreased by $0.1 million, primarily due to the recognition of less net periodic pension benefit in the current-year quarter.

Income tax expense

For the three months ended March 31, 2022, the Company recognized income tax expense of $7.1 million, resulting in an effective tax rate of 25.7%. For the three months ended March 31, 2021 the Company recognized income tax expense of $5.0 million, resulting in an effective tax rate of 18.4%. The Company’s income tax expense and effective tax rate in the prior-year quarter were lower primarily due to the recognition of $1.8 million of excess tax benefits associated with stock-based compensation activity.

Net income

Net income for the three months ended March 31, 2022 decreased by $1.7 million compared to the prior-year quarter, largely due to a $2.1 million increase in income tax expense, the $0.2 million increase in interest expense, and the $0.1 million decrease in other income, partially offset by the aforementioned improvement in operating income.

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Environmental Solutions

The following table summarizes the Environmental Solutions Group’s operating results as of and for the three months ended March 31, 2022 and 2021: 

	Three Months Ended March 31,
($ in millions)	2022			2021			Change
Net sales	$	274.2		$	228.1		$	46.1
Operating income	26.8			27.1			(0.3)
Operating data:
Operating margin	9.8		%	11.9		%	(2.1)		%
Total orders	$	387.6		$	324.2		$	63.4
Backlog	690.1			379.3			310.8
Depreciation and amortization	12.4			11.3			1.1

Total orders for the three months ended March 31, 2022 increased by $63.4 million, or 20%, compared to the prior-year quarter. U.S. orders increased by $68.1 million, or 26%, primarily due to improvements in orders for safe-digging trucks, sewer cleaners, street sweepers, metal extraction support equipment, and industrial vacuum loaders of $17.7 million, $16.3 million, $14.8 million, $10.0 million, and $6.1 million, respectively. Additionally, aftermarket demand increased by $11.0 million. Partially offsetting these improvements were reductions in orders for dump truck bodies and road-marking and line-removal equipment of $8.9 million and $4.0 million, respectively. Non-U.S. orders decreased by $4.7 million, or 7%, primarily due to reductions in orders for industrial vacuum loaders, refuse trucks, dump truck bodies, and snow removal equipment of $2.1 million, $1.6 million, $1.0 million and $0.8 million, respectively, as well as a reduction in aftermarket demand of $3.6 million. Partially offsetting these reductions were improvements in orders for sewer cleaners and street sweepers of $3.4 million and $2.0 million, respectively.

Net sales for the three months ended March 31, 2022 increased by $46.1 million, or 20%, compared to the prior-year quarter, inclusive of the effects of acquisitions and pricing actions. For the three months ended March 31, 2022, U.S. sales increased by $46.2 million, or 25%, largely due to a $14.1 million improvement in aftermarket revenues and increases in sales of safe-digging trucks, dump truck bodies, street sweepers, trailers, metal extraction support equipment, hoists, and industrial vacuum loaders of $10.0 million, $7.5 million, $3.9 million, $3.2 million, $3.1 million, $3.0 million and $2.4 million, respectively. Partially offsetting these improvements was a $4.2 million reduction in shipments of sewer cleaners. Non-U.S. sales decreased by $0.1 million, primarily due to lower shipments of street sweepers of $2.8 million and a $2.0 million reduction in aftermarket revenues, partially offset by increases in sales of metal extraction support equipment, sewer cleaners and refuse trucks of $2.1 million, $1.4 million, $1.3 million, respectively.

Cost of sales for the three months ended March 31, 2022 increased by $40.6 million, or 23%, compared to the prior-year quarter, primarily due to increased sales volumes, inclusive of acquisition effects, higher material costs, and a $0.4 million increase in depreciation expense. Gross profit margin for the three months ended March 31, 2022 was 20.2%, compared to 21.9% in the prior-year quarter, with the impact of higher material costs and production inefficiencies associated with labor and supply chain disruptions being partially offset by the impact of pricing actions and a more favorable sales mix, associated with the increase in aftermarket demand.

SEG&A expenses for the three months ended March 31, 2022 increased by $5.0 million, or 25%, compared to the prior-year quarter, primarily due to the addition of costs from prior-year acquisitions, as well as increases in selling and marketing expenses. As a percentage of net sales, SEG&A expenses were 9.2% in the current-year quarter, compared to 8.9% in the prior-year quarter.

Operating income for the three months ended March 31, 2022 decreased by $0.3 million, or 1%, compared to the prior-year quarter, largely due to the $5.0 million increase in SEG&A expenses and a $0.7 million increase in amortization expense, partially offset by a $5.5 million improvement in gross profit.

Backlog was $690 million at March 31, 2022, compared to $379 million at March 31, 2021.

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Safety and Security Systems

The following table summarizes the Safety and Security Systems Group’s operating results as of and for the three months ended March 31, 2022 and 2021: 

	Three Months Ended March 31,
($ in millions)	2022			2021			Change
Net sales	$	56.0		$	50.7		$	5.3
Operating income	7.9			7.2			0.7
Operating data:
Operating margin	14.1		%	14.2		%	(0.1)		%
Total orders	$	65.0		$	59.9		$	5.1
Backlog	61.1			30.2			30.9
Depreciation and amortization	1.0			0.9			0.1

Total orders for the three months ended March 31, 2022 increased by $5.1 million, or 9%, compared with the prior-year quarter. U.S. orders increased by $5.5 million, primarily due to improvements in orders for public safety equipment and warning systems of $3.6 million and $2.4 million, respectively. Non-U.S. orders decreased by $0.4 million, largely due to a $1.3 million reduction in orders for public safety equipment, as well as a $0.7 million unfavorable foreign currency translation impact, partially offset by improvements in orders for industrial signaling equipment and warning systems of $1.1 million and $0.5 million, respectively.

Net sales for the three months ended March 31, 2022 increased by $5.3 million, or 10%, compared to the prior-year quarter. U.S. sales increased by $2.6 million, primarily driven by a $2.6 million improvement in sales of public safety equipment. Non-U.S. sales increased by $2.7 million, largely due to improvements in sales of public safety equipment and industrial signaling equipment of $2.9 million and $1.0 million, respectively, partially offset by a $0.9 million unfavorable foreign currency translation impact.

Cost of sales for the three months ended March 31, 2022 increased by $3.9 million, or 12%, compared to the prior-year quarter, primarily related to higher sales volumes and increased material and freight costs, partially offset by a $0.7 million favorable foreign currency translation impact. Gross profit margin for the three months ended March 31, 2022 was 36.1%, compared to 37.1% in the prior-year quarter, with the decrease primarily attributable to the impact of higher material and freight costs, partially offset by the impact of pricing actions.

SEG&A expenses for the three months ended March 31, 2022 increased by $0.7 million, or 6%, compared to the prior-year quarter, primarily due to higher sales commissions. As a percentage of net sales, SEG&A expenses decreased from 22.9% in the prior-year quarter, to 22.0% in the current-year quarter.

Operating income for the three months ended March 31, 2022 increased by $0.7 million, or 10%, compared to the prior-year quarter, primarily due to a $1.4 million improvement in gross profit, partially offset by the $0.7 million increase in SEG&A expenses.

Backlog was $61 million at March 31, 2022, compared to $30 million at March 31, 2021.

Corporate Expenses

Corporate operating expenses for the three months ended March 31, 2022 were $6.2 million, compared to $6.5 million in the prior-year quarter, with the reduction primarily due to lower post-employment expenses, partially offset by higher incentive compensation expense.

Seasonality of Company’s Business

Certain of the Company’s businesses are susceptible to the influences of seasonal factors, including buying patterns, delivery patterns and productivity influences from holiday periods and weather. In general, the Company tends to have lower equipment sales in the first calendar quarter of each year compared to other quarters as a result of these factors. In addition, rental income and parts sales are generally higher in the second and third quarters of the year, because many of the Company’s products are used for maintenance activities in North America, where usage is typically lower during periods of harsher weather conditions.

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Financial Condition, Liquidity and Capital Resources

The Company uses its cash flow from operations to fund growth and to make capital investments that sustain its operations, reduce costs, or both. Beyond these uses, remaining cash is used to pay down debt, repurchase shares, fund dividend payments and make pension contributions. The Company may also choose to invest in the acquisition of businesses. In the absence of significant unanticipated cash demands, we believe that the Company’s existing cash balances, cash flow from operations and borrowings available under the 2019 Credit Agreement will provide funds sufficient for these purposes. As of March 31, 2022, there was $327.8 million of cash drawn and $9.8 million of undrawn letters of credit under the 2019 Credit Agreement, with $162.4 million of availability for borrowings. The net cash flows associated with the Company’s rental equipment transactions are included in cash flow from operating activities.

The Company’s cash and cash equivalents totaled $39.2 million and $40.5 million as of March 31, 2022 and December 31, 2021, respectively. As of March 31, 2022, $15.7 million of cash and cash equivalents was held by foreign subsidiaries. Cash and cash equivalents held by subsidiaries outside the U.S. typically are held in the currency of the country in which it is located. The Company uses this cash to fund the operating activities of its foreign subsidiaries and for further investment in foreign operations. Generally, the Company has considered such cash to be permanently reinvested in its foreign operations and the Company’s current plans do not demonstrate a need to repatriate such cash to fund U.S. operations. However, in the event that these funds are needed to fund U.S. operations or to satisfy U.S. obligations, they generally could be repatriated. The repatriation of these funds may cause the Company to incur additional U.S. income tax expense, dependent on income tax laws and other circumstances at the time any such amounts are repatriated.

Net cash of $7.0 million was provided by operating activities in the three months ended March 31, 2022, compared to $26.0 million in the prior-year period, with the year-over-year change primarily due to the seasonal build up of working capital, including increases due to timing differences and strategic stocking of critical inventory components, such as chassis, to support demand levels and partially mitigate ongoing supply chain constraints. Partially offsetting these increases was a $0.9 million decrease in pension contributions.

Net cash of $34.3 million was used for investing activities in the three months ended March 31, 2022, compared to $56.4 million in the prior-year period. During the three months ended March 31, 2022, the Company completed the purchase of its University Park, Illinois manufacturing facility for $27.8 million and funded $5.9 million of other capital expenditures. Capital expenditures in the prior-year period were $4.3 million. During the three months ended March 31, 2021, the Company also paid initial consideration of $53.5 million to acquire OSW.

Net cash of $26.1 million was provided by financing activities in the three months ended March 31, 2022, compared with $4.0 million in the prior-year period. In the three months ended March 31, 2022, the Company borrowed $46.8 million against its revolving credit facility, primarily to fund the purchase of the University Park facility. The Company also funded cash dividends and share repurchases of $5.5 million and $13.6 million, respectively, and redeemed $1.5 million of stock in order to remit funds to tax authorities to satisfy employees’ tax withholdings following the vesting of stock-based compensation and the exercise of stock options. In the three months ended March 31, 2021, the Company borrowed $10.1 million against its revolving credit facility, received $3.3 million from stock option exercises, funded cash dividends of $5.5 million and redeemed $4.0 million of stock in order to remit funds to tax authorities to satisfy employees’ tax withholdings following the vesting of stock-based compensation and the exercise of stock options.

The Company is subject to certain net leverage ratio and interest coverage ratio financial covenants under the 2019 Credit Agreement that are to be measured at each fiscal quarter-end. The Company was in compliance with all such covenants as of March 31, 2022.

Excluding the University Park facility acquisition, the Company anticipates that capital expenditures for 2022 will be in the range of $25 million to $30 million. The Company believes that its financial resources and major sources of liquidity, including cash flow from operations and borrowing capacity, will be adequate to meet its operating needs, capital needs and financial commitments.

Contractual Obligations and Off-Balance Sheet Arrangements

During the three months ended March 31, 2022, there have been no material changes in the Company’s contractual obligations and off-balance sheet arrangements as described in Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations, of the Company’s Annual Report on Form 10-K for the year ended December 31, 2021.

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Item 3.     Quantitative and Qualitative Disclosures about Market Risk.

See Item 7A, Quantitative and Qualitative Disclosures about Market Risk, of the Company’s Annual Report on Form 10-K for the year ended December 31, 2021. During the three months ended March 31, 2022, there have been no significant changes in our exposure to market risk.

Item 4.     Controls and Procedures.

As required by Rule 13a-15 under the Exchange Act, the Company’s management, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the design and operation of the Company’s disclosure controls and procedures (as defined in Rule 13a-15(e) or Rule 15d-15(e) under the Exchange Act) as of March 31, 2022. Based on that evaluation, the Company’s Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective as of March 31, 2022.

As a matter of practice, the Company’s management continues to review and document internal control and procedures for financial reporting. From time to time, the Company may make changes aimed at enhancing the effectiveness of the controls and ensuring that the systems evolve with the business.

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PART II. OTHER INFORMATION

Item 1.    Legal Proceedings.

The information set forth under the heading “Legal Proceedings” in Note 7 – Commitments and Contingencies to the accompanying condensed consolidated financial statements as included in Part I of this Form 10-Q is incorporated herein by reference.

Item 1A. Risk Factors.

There have been no material changes in the Company’s risk factors as described in Item 1A, Risk Factors, of the Company’s Annual Report on Form 10-K for the year ended December 31, 2021.

Item 2.    Unregistered Sales of Equity Securities and Use of Proceeds.

The following table provides a summary of the Company’s repurchase activity for its common stock during the three months ended March 31, 2022:

Period	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Dollar Value of Shares That May Yet Be Purchased Under the Plans or Programs (a) (b)
January 2022 (1/1/22 - 2/5/22)	—	$	—	—	$	75,149,983
February 2022 (2/6/22 - 3/5/22)	—	—		—	75,149,983
March 2022 (3/6/22 - 4/2/22)	395,370	34.3051		395,370	61,586,779

(a)    In November 2014, the Board authorized a stock repurchase program of up to $75.0 million of the Company’s common stock.

(b)    In March 2020, the Board authorized an additional stock repurchase program of up to $75.0 million of the Company’s common stock. This program supplements the November 2014 stock repurchase program, which remains in effect.

Item 3.    Defaults upon Senior Securities.

None.

Item 4.    Mine Safety Disclosures.

Not applicable.

Item 5.    Other Information.

On May 2, 2022, the Company issued a press release announcing its financial results for the three months ended March 31, 2022. The presentation slides for the first quarter 2022 earnings call were also posted on the Company’s website at that time. The full text of the first quarter financial results press release and earnings presentation are attached hereto as Exhibits 99.1 and 99.2, respectively, to this Form 10-Q.

28

Item 6.    Exhibits.

3.1	Restated Certificate of Incorporation of the Company. Incorporated by reference to Exhibit 3.1 to the Company’s Form 8-K filed April 30, 2010.
3.2	Amended and Restated By-laws of the Company. Incorporated by reference to Exhibit 3.1 to the Company’s Form 8-K filed February 9, 2016.
10.1*	Employment Letter dated as of January 31, 2022, by and between the Company and Diane I. Bonina.
10.2	Purchase and Sale Agreement, dated as of February 1, 2022, by and between 2645 Federal Signal Drive Fee, LLC, and the Company. Incorporated by reference to Exhibit 10.ww. to the Company’s Form 10-K for the year ended December 31, 2021.
31.1	CEO Certification under Section 302 of the Sarbanes-Oxley Act.
31.2	CFO Certification under Section 302 of the Sarbanes-Oxley Act.
32.1	CEO Certification of Periodic Report under Section 906 of the Sarbanes-Oxley Act.
32.2	CFO Certification of Periodic Report under Section 906 of the Sarbanes-Oxley Act.
99.1	First Quarter Financial Results Press Release, Dated May 2, 2022.
99.2	First Quarter Earnings Call Presentation Slides.
101.INS	XBRL Instance Document (the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document).
101.SCH	Inline XBRL Taxonomy Extension Schema Document.
101.CAL	Inline XBRL Taxonomy Calculation Linkbase Document.
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	Inline XBRL Taxonomy Label Linkbase Document.
101.PRE	Inline XBRL Taxonomy Presentation Linkbase Document.
104	Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101).

*Management contract or compensatory plan or arrangement required to be filed as an exhibit pursuant to Item 15(a)(3) of Form 10-K.

29

SIGNATURE

Pursuant to the requirements of Section 13 or 15 (d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

		Federal Signal Corporation
Date:	May 2, 2022	/s/ Ian A. Hudson
		Ian A. Hudson
		Senior Vice President and Chief Financial Officer (Principal Financial Officer)

30

EX-10.1

January 31, 2022 By E-Mail Ms. Diane Bonina Re: Offer of Employment Dear Diane: On behalf of Federal Signal Corporation (“Company” or “Federal Signal”), it is with great pleasure that I present you with the following offer of employment in the position of Vice President, General Counsel and Secretary, reporting to Jennifer Sherman, Federal Signal’s President and CEO. We are delighted to welcome you to our executive leadership team. The precise terms of our offer are as follows: 1) Start Date: Your employment will begin on a date to be mutually agreed upon. 2) Base Salary: Your annual rate of base salary will be $345,000 per year, less taxes and withholdings, and will be paid on a semi- monthly basis, unless a more frequent pay period is required by applicable state law. As determined in the discretion of the Company and subject to budget and performance, you will be considered for an annual merit-based salary increase in March of 2023. 3) Annual Cash Incentive Bonus: In 2022, provided you agreed to the enclosed Terms of Employment Agreement, you will be eligible to earn an annual cash incentive bonus through Federal Signal’s Short-Term Incentive Bonus Plan (“STIP”) in accordance with its terms. Your bonus at target level of performance will be 50% of your base salary and your maximum bonus payout will be 100% of your base salary. For 2022, your bonus will be prorated based on your start date. The STIP is designed to reward and motivate outstanding performance and is currently based on achievement of annual company/business unit and individual objectives. For 2022, company/ business unit objectives (pre-tax income and EBITDA margin) will account for 80% and individual objectives will account for 20% of the bonus opportunity, respectively. Both the weighting and the applicable objectives are determined at the discretion of the Compensation and Benefits Committee (“CBC”) of Federal Signal’s Board of Directors in or around February of each performance year. In addition to satisfying company/business unit and individual objectives, you must be employed by the Company on the date bonuses are paid in order to earn a bonus. Bonus payments are subject to the approval of the CBC and Federal Signal’s Board of Directors and generally occur in March following the calendar year to which the bonus applies. Your eligibility for and participation in the STIP in subsequent calendar years will be communicated to you in writing when such determinations are made by Federal Signal in its discretion. 4) Long-Term Equity Incentives: a) Subject to the approval of the CBC, on or near your Start Date, you will receive a Restricted Stock Award (“RSA”), with a grant date value of $50,000. Time-based restricted stock cliff vests at the end of a three-year period. b) In 2022, you will be eligible to receive an additional long-term equity incentive award with an aggregate target grant date value of $425,000 as part of Federal Signal’s annual grant cycle, subject to the discretion of the CBC. As currently

Ms. Diane Bonina January 31, 2022 Page 2 structured for your role, 50% of these awards are comprised of Performance Share Units (“PSUs”), 25% are comprised of Non-Qualified Stock Options (“NQSOs”), and 25% are comprised of RSAs. PSUs currently vest over a three-year period and are subject to meeting certain performance criteria over the same three-year period, which may result in performance shares being earned anywhere between 0% and 200% of target. NQSOs vest ratably over a three-year period and restricted stock cliff vests at the end of a three-year period. Any such awards, the amount of such awards, and the terms and conditions applicable to such awards, will be made and announced, if at all, in the discretion of Federal Signal in connection with its annual grant cycle. This offer letter does not promise or guarantee a long-term incentive award in 2022 or in subsequent years. c) To receive these awards, you must enter into Award Agreements which contain the precise terms and conditions of such awards. Award Agreements will be presented to you as soon as administratively feasible after the grant date and include post-employment restrictions, including but not limited to non-competition and non-solicitation commitments. 5) Stock Ownership Guidelines/ Insider Trading: Based on your position, you are subject to Federal Signal’s stock ownership guidelines (“SOGs”). Generally speaking, this means that, in order to trade in Federal Signal stock, you must attain and at all times thereafter maintain equity in Federal Signal’s common stock valued at two (2) times your base salary. There is no time limit within which you must achieve target ownership under the SOGs. Additional stock holding requirements are imposed by the SOGs. In addition, your ability to trade in Federal Signal stock is regulated by its Insider Trading Policy and applicable law. Copies of Federal Signal’s SOGs and Insider Trading Policy are enclosed with this letter. You must obtain pre-approval from the CEO of all of your transactions in Federal Signal stock. 6) Car Allowance: You will receive a monthly car allowance in the amount of $750 per month in accordance with Company policies and procedures. 7) Paid Time Off: a. Vacation. Vacation time is based upon calendar year. You will accrue paid vacation at the rate of 1.67 days for each month worked up to a maximum accrual of twenty (20) vacation days each calendar year for your use in that same calendar year. Vacation time may be taken before it is earned, subject to Ms. Sherman’s approval and your agreement to re-pay the Company should your employment end with a negative vacation balance. At the conclusion of a calendar year, up to forty (40) accrued but unused vacation hours may be carried over to the next vacation year; all other accrued but unused vacation does not carry-over, is forfeited, and is not compensable. The Company encourages you to use all of your vacation time. Vacation entitlement and accrual rates are subject to adjustment and modification in the discretion of the Company. b. Holidays. The Company recognizes eight (8) published paid holidays, subject to change in the Company’s discretion. c. Personal Days. You are entitled to three (3) paid personal days for your use in 2022. In subsequent years, you will be eligible for three (3) personal days or such other amount as determined by then-applicable Company policy. Unused personal days at the conclusion of the calendar year do not carry-over, are forfeited, and are not compensable. 8) Benefits: Subject to individual plan requirements, you are eligible to participate in Federal Signal’s group health and welfare benefit programs on the first day of the month after your start date. Coverage options are outlined in the enclosed Benefits Summary Sheet. With the exception of the Federal Signal Corporation Retirement Savings Plan (in which you will be auto-enrolled as soon as administratively feasible following your date of hire), you must enroll within thirty (30) days of your date of hire in all benefit plans available to you or you waive coverage until the next open enrollment period. Benefit plans may be discontinued or modified in the discretion of Federal Signal. The terms of applicable benefit plan documents control the terms of your eligibility in the event of any discrepancy between the plan documents and the

Ms. Diane Bonina January 31, 2022 Page 3 Benefits Summary Sheet. You may also be eligible to participate in the non-qualified Federal Signal Corporation Savings Restoration Plan (“SRP”) beginning in 2023. 8) Severance: Subject to BOD approval, following your one-year anniversary of employment with the Company, you will become eligible to participate in Federal Signal’s Executive General Severance Plan (“Severance Plan”) as a Tier II Executive, as may be amended from time-to-time in Federal Signal’s discretion. Prior to your one-year anniversary, you are not eligible for severance under any Company severance plan, practice, or program, with the exception of the Executive Change-in-Control Severance Agreement listed below. A copy of the Severance Plan is attached for your review. 9) Executive Change-in-Control Severance Agreement: Subject to BOD approval, you are being offered the opportunity to enter into the enclosed Tier II Executive Change-in-Control Severance Agreement (“CIC Agreement”) with the Company. To accept this opportunity, you must return a signed CIC Agreement along with a signed copy of this offer letter This offer is for at-will employment. This means that either you or the Company may choose to end the employment relationship at any time with or without cause, for any lawful reason or for no reason. This offer is not, nor shall it be construed to be, a guarantee or promise of employment for any specified or set period. This offer of employment, together with the grant of equity awards, STIP participation, and other consideration herein provided, is expressly conditioned upon you signing and adhering to the enclosed Terms of Employment Agreement which includes post- employment restrictions and obligations owed by you to Federal Signal and its affiliates. Diane, we hope you will accept this offer and look forward to working with you. To accept this offer, please sign and return to me this offer letter and the Terms of Employment Agreement on or before January 31, 2022. If not accepted by you on or before that date, this offer shall be considered withdrawn. If you have any questions about this offer, please call me at (630) 915-2664. Best regards, /s/ Shirley S. Paulson Vice President, Human Resources Enclosures: Terms of Employment Agreement, Insider Trading Policy, Stock Ownership Guidelines, Executive General Severance Plan, CIC Agreement cc: Jennifer L. Sherman Acceptance: I accept the offer set forth above. I further represent and warrant that there were no promises or guarantees made to me that are not contained in this offer letter. Diane Bonina Date /s/Diane Bonina January 31, 2022

EX-31.1

EXHIBIT 31.1

CEO Certification under Section 302 of the Sarbanes-Oxley Act

I, Jennifer L. Sherman, certify that:

1.    I have reviewed this quarterly report on Form 10-Q of Federal Signal Corporation;

2.    Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.    Based on my knowledge, the financial statements and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.    The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)), for the registrant and have:

(a)    Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)    Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)    Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)    Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.    The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)    All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)    Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 2, 2022

/s/ Jennifer L. Sherman

Jennifer L. Sherman

President and Chief Executive Officer

(Principal Executive Officer)

EX-31.2

EXHIBIT 31.2

CFO Certification under Section 302 of the Sarbanes-Oxley Act

I, Ian A. Hudson, certify that:

1.    I have reviewed this quarterly report on Form 10-Q of Federal Signal Corporation;

2.    Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.    Based on my knowledge, the financial statements and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.    The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)), for the registrant and have:

(a)    Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)    Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)    Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)    Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.    The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)    All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)    Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 2, 2022

/s/ Ian A. Hudson

Ian A. Hudson

Senior Vice President and Chief Financial Officer

(Principal Financial Officer)

EX-32.1

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

(18 U.S.C. SECTION 1350)

In connection with the Quarterly Report of Federal Signal Corporation (the “Company”) on Form 10-Q for the period ended March 31, 2022 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Jennifer L. Sherman, President and Chief Executive Officer of the Company, certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that:

(1)    The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (15 U.S.C. 78m or 78o (d)); and

(2)    The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 2, 2022

/s/ Jennifer L. Sherman

Jennifer L. Sherman

President and Chief Executive Officer

(Principal Executive Officer)

This certification accompanies the Report pursuant to § 906 of the Sarbanes-Oxley Act of 2002 and shall not be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section. This certification shall also not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Securities Exchange act of 1934, as amended, except to the extent that the Company specifically incorporates it by reference.

EX-32.2

EXHIBIT 32.2

CERTIFICATION PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

(18 U.S.C. SECTION 1350)

In connection with the Quarterly Report of Federal Signal Corporation (the “Company”) on Form 10-Q for the period ended March 31, 2022 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Ian A. Hudson, Senior Vice President and Chief Financial Officer of the Company, certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that:

(1)    The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (15 U.S.C. 78m or 78o (d)); and

(2)    The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 2, 2022

/s/ Ian A. Hudson

Ian A. Hudson

Senior Vice President and Chief Financial Officer

(Principal Financial Officer)

This certification accompanies the Report pursuant to § 906 of the Sarbanes-Oxley Act of 2002 and shall not be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section. This certification shall also not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Securities Exchange act of 1934, as amended, except to the extent that the Company specifically incorporates it by reference.

EX-99.1

EXHIBIT 99.1

FOR IMMEDIATE RELEASE

Federal Signal Reports First Quarter Results Including 18% Sales Improvement and New Records in Orders and Backlog; Raises Low End of Full-Year Outlook

Oak Brook, Illinois, May 2, 2022 — Federal Signal Corporation (NYSE:FSS) (the “Company”), a leader in environmental and safety solutions, today reported results for the first quarter ended March 31, 2022.

First Quarter Highlights

•Net sales of $330 million, up $51 million, or 18%, from last year

•GAAP EPS of $0.33

•Adjusted EPS of $0.34

•Record quarterly orders of $453 million, up $69 million, or 18%, from last year

•Record backlog of $751 million, up $342 million, or 83%, from last year

•Raises low end of 2022 adjusted EPS* outlook range by $0.04, establishing a new range of $1.80 to $2.00

•Increases low end of 2022 net sales outlook range by $30 million; new range of $1.38 billion to $1.45 billion

Consolidated net sales for the first quarter were $330 million, up $51 million, or 18%, compared to the prior-year quarter. Net income for the first quarter was $20.5 million, or $0.33 per diluted share, compared to $22.2 million, or $0.36 per diluted share, in the prior-year quarter.

The Company also reported adjusted net income for the first quarter of $20.7 million, or $0.34 per diluted share, compared to $23.2 million, or $0.38 per diluted share, in the prior-year quarter. The Company is reporting adjusted results to facilitate comparisons of underlying performance on a year-over-year basis. A reconciliation of these and other non-GAAP measures is provided at the conclusion of this news release.

Despite Ongoing Disruptions, Operational Performance Improved as the Quarter Progressed

“Our businesses worked diligently to mitigate the impact of ongoing supply chain volatility and increased coronavirus-related disruption that we experienced at many of our facilities in the early part of the year,” commented Jennifer L. Sherman, President and Chief Executive Officer. “As the quarter progressed, production levels and customer deliveries meaningfully improved, and with benefits from pricing actions and contributions from recent acquisitions, our teams were successful in delivering year-over-year top line growth of 18% during the quarter, at an EBITDA margin within our target range.”

In the Environmental Solutions Group, net sales for the first quarter were $274 million, up $46 million, or 20%, compared to the prior-year quarter. In the Safety and Security Systems Group, net sales were $56 million, up $5 million, or 10%, compared to the prior-year quarter.

Consolidated operating income for the first quarter was $28.5 million, up $0.7 million, or 3%, compared to the prior-year quarter. Consolidated operating margin for the first quarter was 8.6%, compared to 10.0% in the prior-year quarter.

Consolidated adjusted earnings before interest, tax, depreciation and amortization (“adjusted EBITDA”) for the first quarter was $42.2 million, up $1.0 million, or 2%, compared to the prior-year quarter, and consolidated adjusted EBITDA margin was 12.8%, compared to 14.8% in the prior-year quarter.

In the Environmental Solutions Group, adjusted EBITDA for the first quarter was $39.3 million, in line with the prior-year quarter, and its adjusted EBITDA margin was 14.3%, compared to 17.2% last year. In the Safety and Security Systems Group, adjusted EBITDA for the first quarter was $8.9 million, up $0.7 million, or 9%, compared to the prior-year quarter, and its adjusted EBITDA margin was 15.9%, compared to 16.2% last year.

1

Consolidated orders for the first quarter were $453 million, a new record for the Company, and an improvement of $69 million, or 18%, compared to the prior-year quarter. Consolidated backlog at March 31, 2022 was $751 million, another Company record, and an increase of $342 million, or 83%, from last year.

Financial Position Remains Strong, Providing Flexibility to Invest in Organic Growth, Fund M&A and Return Cash to Stockholders

Operating cash flow during the first quarter was $7 million. At March 31, 2022, consolidated debt was $330 million, total cash and cash equivalents were $39 million and the Company had $162 million of availability for borrowings under its revolving credit facility. During the first quarter, the Company completed the purchase of its manufacturing facility in University Park, Illinois.

“Our current financial position provides us significant flexibility to pursue strategic acquisitions and invest in organic growth initiatives, like the purchase of our University Park facility,” said Sherman. “We also remain committed to returning cash to stockholders through dividends and opportunistic share repurchases.”

The Company funded dividends of $5.5 million during the first quarter, reflecting a dividend of $0.09 per share, and the Board of Directors recently declared a similar dividend that will be payable in the second quarter.

The Company also funded share repurchases of $13.6 million during the first quarter.

Outlook

“Demand for our products and our aftermarket offerings remains at unprecedented levels, with both our orders and backlog this quarter again setting new Company records,” noted Sherman. “Although we expect the volatile supply chain environment to continue, we are encouraged with how our teams have navigated through these challenges so far this year. With our first quarter performance, our record backlog and current expectations of component availability, we are raising the low end of our full-year adjusted EPS* outlook range by $0.04, establishing a new range of $1.80 to $2.00. We are also increasing the low end of our full-year net sales outlook range by $30 million, establishing a new range of $1.38 billion to $1.45 billion.”

CONFERENCE CALL

Federal Signal will host its first quarter conference call on Monday, May 2, 2022 at 10:00 a.m. Eastern Time. The call will last approximately one hour. The call may be accessed over the internet through Federal Signal’s website at www.federalsignal.com or by dialing phone number 1-855-327-6837 and entering the pin number 10018930. A replay will be available on Federal Signal’s website shortly after the call.

About Federal Signal

Federal Signal Corporation (NYSE: FSS) builds and delivers equipment of unmatched quality that moves material, cleans infrastructure, and protects the communities where we work and live. Founded in 1901, Federal Signal is a leading global designer, manufacturer and supplier of products and total solutions that serve municipal, governmental, industrial and commercial customers. Headquartered in Oak Brook, Ill., with manufacturing facilities worldwide, the Company operates two groups: Environmental Solutions and Safety and Security Systems. For more information on Federal Signal, visit: www.federalsignal.com.

“Safe Harbor” Statement under the Private Securities Litigation Reform Act of 1995

This release contains unaudited financial information and various forward-looking statements as of the date hereof and we undertake no obligation to update these forward-looking statements regardless of new developments or otherwise. Statements in this release that are not historical are forward-looking statements. Such statements are subject to various risks and uncertainties that could cause actual results to vary materially from those stated. Such risks and uncertainties include but are not limited to: direct and indirect impacts of the coronavirus pandemic and the associated government response, risks and adverse economic effects associated with emerging geopolitical conflicts, product and price competition, supply chain disruptions, work stoppages, availability and pricing of raw materials, cybersecurity risks, risks associated with acquisitions such as integration of operations and achieving anticipated revenue and cost benefits, foreign currency exchange rate changes, interest rate changes, increased legal expenses and litigation results, legal and regulatory developments and other risks and uncertainties described in filings with the Securities and Exchange Commission.

Contact: Ian Hudson, Chief Financial Officer, +1-630-954-2000, ihudson@federalsignal.com

* Adjusted earnings per share (“EPS”) is a non-GAAP measure, which includes certain adjustments to reported GAAP income from continuing operations and diluted EPS. In 2021, we made adjustments to exclude the impact of acquisition and integration-related (benefits) expenses, pension-related charges, coronavirus-related expenses and purchase accounting effects, where applicable. Should any similar items occur in 2022, we would expect to exclude them from the determination of adjusted EPS. However, because of the underlying uncertainty in quantifying amounts which may not yet be known, a reconciliation of our Adjusted EPS outlook to the most applicable GAAP measure is excluded based on the unreasonable efforts exception in Item 10(e)(1)(i)(B).

2

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)

	Three Months Ended March 31,
(in millions, except per share data)	2022			2021
Net sales	$	330.2		$	278.8
Cost of sales	254.5			210.0
Gross profit	75.7			68.8
Selling, engineering, general and administrative expenses	43.6			38.2
Amortization expense	3.3			2.6
Acquisition and integration-related expenses	0.3			0.2
Operating income	28.5			27.8
Interest expense	1.3			1.1
Other income, net	(0.4)			(0.5)
Income before income taxes	27.6			27.2
Income tax expense	7.1			5.0
Net income	$	20.5		$	22.2
Earnings per share:
Basic	$	0.34		$	0.37
Diluted	$	0.33		$	0.36
Weighted average common shares outstanding:
Basic	60.7			60.6
Diluted	61.4			61.7
Cash dividends declared per common share	$	0.09		$	0.09
Operating data:
Operating margin	8.6		%	10.0		%
Adjusted EBITDA	$	42.2		$	41.2
Adjusted EBITDA margin	12.8		%	14.8		%
Total orders	$	452.6		$	384.1
Backlog	751.2			409.5
Depreciation and amortization	13.4			12.2

3

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

	March 31, 2022		December 31, 2021
(in millions, except per share data)	(Unaudited)
ASSETS
Current assets:
Cash and cash equivalents	$	39.2	$	40.5
Accounts receivable, net of allowances for doubtful accounts of $2.6 and $2.1, respectively	156.4		136.0
Inventories	249.7		229.1
Prepaid expenses and other current assets	18.9		25.4
Total current assets	464.2		431.0
Properties and equipment, net of accumulated depreciation of $155.6 and $151.6, respectively	170.4		141.9
Rental equipment, net of accumulated depreciation of $45.3 and $43.8, respectively	111.0		108.4
Operating lease right-of-use assets	25.3		29.8
Goodwill	431.3		432.2
Intangible assets, net of accumulated amortization of $45.9 and $42.7, respectively	203.6		205.7
Deferred tax assets	8.1		8.4
Other long-term assets	11.2		8.7
Total assets	$	1,425.1	$	1,366.1
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Current portion of long-term borrowings and finance lease obligations	$	0.5	$	0.6
Accounts payable	80.7		64.8
Customer deposits	28.5		21.9
Accrued liabilities:
Compensation and withholding taxes	24.2		29.9
Current operating lease liabilities	6.3		8.8
Other current liabilities	41.3		44.4
Total current liabilities	181.5		170.4
Long-term borrowings and finance lease obligations	329.2		282.2
Long-term operating lease liabilities	19.7		22.1
Long-term pension and other postretirement benefit liabilities	38.9		40.4
Deferred tax liabilities	54.5		53.2
Other long-term liabilities	13.5		13.8
Total liabilities	637.3		582.1
Stockholders’ equity:
Common stock, $1 par value per share, 90.0 shares authorized, 69.1 and 68.9 shares issued, respectively	69.1		68.9
Capital in excess of par value	259.3		256.7
Retained earnings	698.6		683.6
Treasury stock, at cost, 8.5 and 8.0 shares, respectively	(166.5)		(151.0)
Accumulated other comprehensive loss	(72.7)		(74.2)
Total stockholders’ equity	787.8		784.0
Total liabilities and stockholders’ equity	$	1,425.1	$	1,366.1

4

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

	Three Months Ended March 31,
(in millions)	2022		2021
Operating activities:
Net income	$	20.5	$	22.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	13.4		12.2
Stock-based compensation expense	2.4		1.3
Deferred income taxes	0.3		0.5
Changes in operating assets and liabilities	(29.6)		(10.2)
Net cash provided by operating activities	7.0		26.0
Investing activities:
Purchases of properties and equipment	(33.7)		(4.3)
Payments for acquisition-related activity, net of cash acquired	(1.0)		(52.2)
Other, net	0.4		0.1
Net cash used for investing activities	(34.3)		(56.4)
Financing activities:
Increase in revolving lines of credit, net	46.8		10.1
Purchases of treasury stock	(13.6)		—
Redemptions of common stock to satisfy withholding taxes related to stock-based compensation	(1.5)		(4.0)
Cash dividends paid to stockholders	(5.5)		(5.5)
Proceeds from stock-based compensation activity	—		3.3
Other, net	(0.1)		0.1
Net cash provided by financing activities	26.1		4.0
Effects of foreign exchange rate changes on cash and cash equivalents	(0.1)		(0.5)
Decrease in cash and cash equivalents	(1.3)		(26.9)
Cash and cash equivalents at beginning of year	40.5		81.7
Cash and cash equivalents at end of period	$	39.2	$	54.8

5

FEDERAL SIGNAL CORPORATION AND SUBSIDIARIES

GROUP RESULTS (Unaudited)

The following tables summarize group operating results as of and for the three months ended March 31, 2022 and 2021:

Environmental Solutions Group

	Three Months Ended March 31,
($ in millions)	2022			2021			Change
Net sales	$	274.2		$	228.1		$	46.1
Operating income	26.8			27.1			(0.3)
Adjusted EBITDA	39.3			39.3			—
Operating data:
Operating margin	9.8		%	11.9		%	(2.1)		%
Adjusted EBITDA margin	14.3		%	17.2		%	(2.9)		%
Total orders	$	387.6		$	324.2		$	63.4
Backlog	690.1			379.3			310.8
Depreciation and amortization	12.4			11.3			1.1

Safety and Security Systems Group

	Three Months Ended March 31,
($ in millions)	2022			2021			Change
Net sales	$	56.0		$	50.7		$	5.3
Operating income	7.9			7.2			0.7
Adjusted EBITDA	8.9			8.2			0.7
Operating data:
Operating margin	14.1		%	14.2		%	(0.1)		%
Adjusted EBITDA margin	15.9		%	16.2		%	(0.3)		%
Total orders	$	65.0		$	59.9		$	5.1
Backlog	61.1			30.2			30.9
Depreciation and amortization	1.0			0.9			0.1

Corporate Expenses

Corporate operating expenses were $6.2 million and $6.5 million for the three months ended March 31, 2022 and 2021, respectively.

6

SEC REGULATION G NON-GAAP RECONCILIATION

The financial measures presented below are unaudited and are not in accordance with U.S. generally accepted accounting principles (“GAAP”). The non-GAAP financial information presented herein should be considered supplemental to, and not a substitute for, or superior to, financial measures calculated in accordance with GAAP. The Company has provided this supplemental information to investors, analysts, and other interested parties to enable them to perform additional analyses of operating results, to illustrate the results of operations giving effect to the non-GAAP adjustments shown in the reconciliations below, and to provide an additional measure of performance which management considers in operating the business.

Adjusted Net Income and Earnings Per Share (“EPS”):

The Company believes that modifying its 2022 and 2021 net income and diluted EPS provides additional measures which are representative of the Company’s underlying performance and improves the comparability of results across reporting periods. During the three months ended March 31, 2022 and 2021 adjustments were made to reported GAAP net income and diluted EPS to exclude the impact of acquisition and integration-related expenses, coronavirus-related expenses and purchase accounting effects, where applicable.

	Three Months Ended March 31,
(in millions)	2022		2021
Net income, as reported	$	20.5	$	22.2
Add:
Income tax expense	7.1		5.0
Income before income taxes	27.6		27.2
Add:
Acquisition and integration-related expenses	0.3		0.2
Coronavirus-related expenses (a)	—		0.9
Purchase accounting effects	—		0.1
Adjusted income before income taxes	27.9		28.4
Adjusted income tax expense (b)	(7.2)		(5.2)
Adjusted net income	$	20.7	$	23.2
	Three Months Ended March 31,
(dollars per diluted share)	2022		2021
EPS, as reported	$	0.33	$	0.36
Add:
Income tax expense	0.12		0.08
Income before income taxes	0.45		0.44
Add:
Acquisition and integration-related expenses	0.01		0.00
Coronavirus-related expenses (a)	—		0.02
Purchase accounting effects	—		0.00
Adjusted income before income taxes	0.46		0.46
Adjusted income tax expense (b)	(0.12)		(0.08)
Adjusted EPS	$	0.34	$	0.38

(a)    Coronavirus-related expenses in the three months ended March 31, 2021 include direct expenses incurred as a result of the coronavirus pandemic, that are incremental to, and separable from, normal operations. These expenses primarily related to the Company's employee wellness initiatives, including reimbursement for certain coronavirus-related expenses.

(b)    Adjusted income tax expense for the three months ended March 31, 2022 and 2021 was recomputed after excluding the impact of acquisition and integration-related expenses, coronavirus-related expenses and purchase accounting effects, where applicable.

7

Adjusted EBITDA and Adjusted EBITDA Margin:

The Company uses adjusted EBITDA and the ratio of adjusted EBITDA to net sales (“adjusted EBITDA margin”), at both the consolidated and segment level, as additional measures which are representative of its underlying performance and to improve the comparability of results across reporting periods. We believe that investors use versions of these metrics in a similar manner. For these reasons, the Company believes that adjusted EBITDA and adjusted EBITDA margin, at both the consolidated and segment level, are meaningful metrics to investors in evaluating the Company’s underlying financial performance.

Consolidated adjusted EBITDA is a non-GAAP measure that represents the total of net income, interest expense, acquisition and integration-related expenses, coronavirus-related expenses, purchase accounting effects, other income/expense, income tax expense, and depreciation and amortization expense. Consolidated adjusted EBITDA margin is a non-GAAP measure that represents the total of net income, interest expense, acquisition and integration-related expenses, coronavirus-related expenses, purchase accounting effects, other income/expense, income tax expense, and depreciation and amortization expense divided by net sales for the applicable period(s).

Segment adjusted EBITDA is a non-GAAP measure that represents the total of segment operating income, acquisition and integration-related expenses, coronavirus-related expenses, purchase accounting effects and depreciation and amortization expense, as applicable. Segment adjusted EBITDA margin is a non-GAAP measure that represents the total of segment operating income, acquisition and integration-related expenses, coronavirus-related expenses, purchase accounting effects and depreciation and amortization expense, as applicable, divided by net sales for the applicable period(s). Segment operating income includes all revenues, costs and expenses directly related to the segment involved. In determining segment income, neither corporate nor interest expenses are included. Segment depreciation and amortization expense relates to those assets, both tangible and intangible, that are utilized by the respective segment.

Other companies may use different methods to calculate adjusted EBITDA and adjusted EBITDA margin.

Consolidated

The following table summarizes the Company’s consolidated adjusted EBITDA and adjusted EBITDA margin and reconciles net income to consolidated adjusted EBITDA for the three months ended March 31, 2022 and 2021:

	Three Months Ended March 31,
($ in millions)	2022			2021
Net income	$	20.5		$	22.2
Add:
Interest expense	1.3			1.1
Acquisition and integration-related expenses	0.3			0.2
Coronavirus-related expenses	—			0.9
Purchase accounting effects	—			0.1
Other income, net	(0.4)			(0.5)
Income tax expense	7.1			5.0
Depreciation and amortization	13.4			12.2
Consolidated adjusted EBITDA	$	42.2		$	41.2
Net sales	$	330.2		$	278.8
Consolidated adjusted EBITDA margin	12.8		%	14.8		%

8

Environmental Solutions Group

The following table summarizes the Environmental Solutions Group’s adjusted EBITDA and adjusted EBITDA margin and reconciles operating income to adjusted EBITDA for the three months ended March 31, 2022 and 2021:

	Three Months Ended March 31,
($ in millions)	2022			2021
Operating income	$	26.8		$	27.1
Add:
Acquisition and integration-related expenses	0.1			—
Coronavirus-related expenses	—			0.8
Purchase accounting effects	—			0.1
Depreciation and amortization	12.4			11.3
Adjusted EBITDA	$	39.3		$	39.3
Net sales	$	274.2		$	228.1
Adjusted EBITDA margin	14.3		%	17.2		%

Safety and Security Systems Group

The following table summarizes the Safety and Security Systems Group’s adjusted EBITDA and adjusted EBITDA margin and reconciles operating income to adjusted EBITDA for the three months ended March 31, 2022 and 2021:

	Three Months Ended March 31,
($ in millions)	2022			2021
Operating income	$	7.9		$	7.2
Add:
Coronavirus-related expenses	—			0.1
Depreciation and amortization	1.0			0.9
Adjusted EBITDA	$	8.9		$	8.2
Net sales	$	56.0		$	50.7
Adjusted EBITDA margin	15.9		%	16.2		%

9

EX-99.2

Jennifer Sherman, President & Chief Executive Officer Ian Hudson, SVP, Chief Financial Officer Federal Signal Q1 2022 Earnings Call May 2, 2022

Safe Harbor This presentation contains unaudited financial information and various forward-looking statements as of the date hereof and we undertake no obligation to update these forward- looking statements regardless of new developments or otherwise. Statements in this presentation that are not historical are forward-looking statements. Such statements are subject to various risks and uncertainties that could cause actual results to vary materially from those stated. Such risks and uncertainties include but are not limited to: direct and indirect impacts of the coronavirus pandemic and the associated government response, risks and adverse economic effects associated with emerging geopolitical conflicts, product and price competition, supply chain disruptions, work stoppages, availability and pricing of raw materials, cybersecurity risks, risks associated with acquisitions such as integration of operations and achieving anticipated revenue and cost benefits, foreign currency exchange rate changes, interest rate changes, increased legal expenses and litigation results, legal and regulatory developments and other risks and uncertainties described in filings with the Securities and Exchange Commission (SEC). This presentation also contains references to certain non-GAAP financial information. Such items are reconciled herein, in our earnings news release provided as of the date of this presentation or in other investor materials filed with the SEC. 2

Q1 Highlights * 3* Comparisons versus Q1 of 2021, unless otherwise noted • Net sales of $330 M, up $51 M, or 18% • Operating income of $28.5 M, up $0.7 M, or 3% • Adjusted EBITDA of $42.2 M, up $1.0 M, or 2% • Adjusted EBITDA margin of 12.8%, compared to 14.8% • GAAP EPS of $0.33, vs. $0.36 • Adjusted EPS of $0.34, vs. $0.38 • Record orders of $453 M, up $69 M, or 18% • Record backlog of $751 M, up $342 M, or 83% • Backlog up $122 M, or 19% vs. Q4 2021

4 Group and Corporate Results $ millions, except % Q1 2022 Q1 2021 % Change ESG Orders 387.6 324.2 20% Sales 274.2 228.1 20% Operating income 26.8 27.1 -1% Operating margin 9.8% 11.9% Adjusted EBITDA 39.3 39.3 0% Adjusted EBITDA margin 14.3% 17.2% SSG Orders 65.0 59.9 9% Sales 56.0 50.7 10% Operating income 7.9 7.2 10% Operating margin 14.1% 14.2% Adjusted EBITDA 8.9 8.2 9% Adjusted EBITDA margin 15.9% 16.2% Corporate expenses 6.2 6.5 -5% Consolidated Orders 452.6 384.1 18% Sales 330.2 278.8 18% Operating income 28.5 27.8 3% Operating margin 8.6% 10.0% Adjusted EBITDA 42.2 41.2 2% Adjusted EBITDA margin 12.8% 14.8%

Consolidated Statement of Operations 5 $ millions, except % and per share Q1 2022 Q1 2021 $ Change % Change Net sales 330.2$ 278.8$ 51.4$ 18% Gross profit 75.7 68.8 6.9 10% SEG&A expenses 43.6 38.2 5.4 14% Amortization expense 3.3 2.6 0.7 27% Acquisition and integration related expenses 0.3 0.2 0.1 50% Operating income 28.5 27.8 0.7 3% Interest expense 1.3 1.1 0.2 18% Other income, net (0.4) (0.5) 0.1 -20% Income tax expense 7.1 5.0 2.1 42% Net income 20.5 22.2 (1.7) -8% Diluted EPS 0.33$ 0.36$ (0.03)$ -8% Diluted adjusted EPS 0.34$ 0.38$ (0.04)$ -11% Gross Margin 22.9% 24.7% SEG&A expenses as a % of net sales 13.2% 13.7% Effective tax rate 25.7% 18.4%

6 Adjusted Earnings per Share ($ in millions) 2022 2021 Net income, as reported 20.5$ 22.2$ Add: Income tax expense 7.1 5.0 Income before income taxes 27.6 27.2 Add: Acquisition and integration-related expenses 0.3 0.2 Coronavirus-related expenses (1) - 0.9 Purchase accounting effects - 0.1 Adjusted income before income taxes 27.9 28.4 Adjusted income tax expense (2) (7.2) (5.2) Adjusted net income 20.7$ 23.2$ Diluted EPS, as reported 0.33$ 0.36$ Adjusted diluted EPS 0.34$ 0.38$ Three Months Ended March 31, (2) Adjusted income tax expense for the three months ended March 31, 2022 and 2021 was recomputed after excluding the impact of acquisition and integration-related expenses, coronavirus-related expenses and purchase accounting effects, where applicable. (1) Coronavirus-related expenses in the three months ended March 31, 2021 include direct expenses incurred as a result of the coronavirus pandemic, that are incremental to, and separable from, normal operations. These expenses primarily related to the Company's employee wellness initiatives, including reimbursement for certain coronavirus-related expenses.

7 Financial Strength and Flexibility * * Dollar amounts as of, or for the quarter ending 3/31/2022 ** Net debt is a non-GAAP measure and is computed as total debt of $329.7 M, less total cash and cash equivalents of $39.2 M Strong capital structure • Cash and cash equivalents of $39 M • Net debt of ~$291 M ** • In July 2019, we executed a five-year, $500 M revolving credit facility, with flexibility to increase by additional $250 M for acquisitions • No debt maturities until July 2024 • Net debt leverage remains low • Compliant with all covenants with significant headroom Healthy cash flow and access to cash facilitate organic growth investment and cash returns to stockholders • Generated ~$7 M of cash from operations in Q1 this year • ~$162 M of availability under revolving credit facility • Completed purchase of University Park building for ~$28 M in Q1 2022 • Anticipating other cap ex of $25 M-$30 M in 2022, including investments in our plants to add capacity and gain efficiencies through automation • Paid $5.5 M for dividends, reflecting increased dividend of $0.09 per share; recently declared similar dividend for Q2 2022 • $13.6 M of share repurchases in Q1 2022 • ~$62 M of repurchase authorization remaining under current programs (~3% of market cap)

CEO Remarks – Q1 Performance 8 • Challenging start to the year, with conditions improving as the quarter progressed  Spike in coronavirus-related absences in January, with dramatic reduction in cases in February and March  After slow start, noted improvement in chassis deliveries within our dump truck businesses in March • Revenues up over $50 million, with both ESG and SSG reporting double-digit revenue growth • ESG revenues up 20% year-over-year  Increased sales of safe-digging trucks, dump truck bodies, metal extraction support equipment and trailers  Aftermarket revenues up $12 million, or 20%, compared to last year, with strong demand for rentals, parts and used equipment • SSG revenues up 10% year-over-year, reflecting higher sales of public safety equipment

CEO Remarks – Market Conditions 9 • Demand remains at unprecedented levels, with orders from both municipal and industrial customers up ~25% vs. last year • Municipal demand includes benefits from federal stimulus, with orders for sewer cleaners and street sweepers both up by 40%+ vs. last year • Strong demand within our public safety end markets, with backlog more than double the same time last year • Recent increase in oil prices contributing to higher demand for industrial products  Orders for safe-digging trucks in Q1 were up 90% vs. last year  Strong rental demand from industrial contractors; Jetstream reported record rental revenues for waterblasting equipment in Q1 • Ongoing supply chain disruption, but chassis deliveries remained on schedule at the majority of our vehicle-based businesses • Proactive pricing actions taken to mitigate cost inflation • Labor availability remains good overall

CEO Remarks – Growth Initiatives 10 • Safe-digging  Introduction of TRUVAC TRXX trailer further expands our suite of safe-digging product offerings • Broadband infrastructure  Broad range of products to meet demand expected from infrastructure legislation • Electrification  Recent launch of hybrid sweeper products, and working with different partners on further electrification efforts • Opportunities for geographic expansion of aftermarket business • Active M&A pipeline Rugby’s Vari-Class body platform on a fully electric class 7 chassis Elgin’s Plug-In Hybrid Broom BearTRUVAC’s TRXX Vacuum Excavator Trailer

2022 Outlook Raising low end of full-year Adjusted EPS* Outlook by $0.04, establishing a new range of $1.80 to $2.00 11  Raising low end of full-year net sales outlook by $30 million, establishing a new range of $1.38 B to $1.45 B  Includes full-year contribution from 2021 acquisitions; represents YoY growth of 14% - 20% vs. $1.21 B in 2021  Double-digit improvement in pre-tax earnings  Depreciation and amortization expense of ~$60 M  Capital expenditures of $25 M to $30 M, excluding University Park building purchase Key Assumptions  Interest expense of ~$7.5 M - $9 M  Effective tax rate resets to a normalized rate of ~25%, excluding discrete items; YoY EPS headwind of ~$0.20  ~62 M weighted average shares outstanding  No significant deterioration in current supply chain environment; assumes steady flow of customer-provided chassis  No significant increase in current input costs *Adjusted earnings per share (“EPS”) is a non-GAAP measure, which includes certain adjustments to reported GAAP income from continuing operations and diluted EPS. In 2021, we made adjustments to exclude the impact of acquisition and integration-related (benefits) expenses, pension-related charges, restructuring activity, coronavirus-related expenses and purchase accounting effects, where applicable. Should any similar items occur in 2022, we would expect to exclude them from the determination of adjusted EPS. However, because of the underlying uncertainty in quantifying amounts which may not yet be known, a reconciliation of our Adjusted EPS outlook to the most applicable GAAP measure is excluded based on the unreasonable efforts exception in Item 10(e)(1)(i)(B).

Federal Signal Q1 2022 Earnings Call 12 Q&A May 2, 2022 Jennifer Sherman, President & Chief Executive Officer Ian Hudson, SVP, Chief Financial Officer

Investor Information Stock Ticker - NYSE:FSS Company website: federalsignal.com/investors HEADQUARTERS 1415 West 22nd Street, Suite 1100 Oak Brook, IL 60523 INVESTOR RELATIONS 630-954-2000 Ian Hudson SVP, Chief Financial Officer IHudson@federalsignal.com 13

Federal Signal Q1 2022 Earnings Call 14 Appendix

Consolidated Adjusted EBITDA 15 $ millions, except % Q1 2022 Q1 2021 Net income 20.5$ 22.2$ Add: Interest expense 1.3 1.1 Acquisition and integration-related expenses 0.3 0.2 Coronavirus-related expenses - 0.9 Purchase accounting effects - 0.1 Other (income) expense, net (0.4) (0.5) Income tax expense 7.1 5.0 Depreciation and amortization 13.4 12.2 Consolidated adjusted EBITDA 42.2$ 41.2$ Net Sales 330.2$ 278.8$ Consolidated adjusted EBITDA margin 12.8% 14.8%

Segment Adjusted EBITDA 16 $ millions, except % Q1 2022 Q1 2021 Operating Income 26.8$ 27.1$ Add: Acquisition and integration-related expenses 0.1 0.0 Coronavirus-related expenses - 0.8 Purchase accounting effects - 0.1 Depreciation and amortization 12.4 11.3 Adjusted EBITDA 39.3$ 39.3$ Net Sales 274.2$ 228.1$ Adjusted EBITDA margin 14.3% 17.2% SSG $ millions, except % Q1 2022 Q1 2021 Operating Income 7.9$ 7.2$ Add: Coronavirus-related expenses - 0.1 Depreciation and amortization 1.0 0.9 Adjusted EBITDA 8.9$ 8.2$ Net Sales 56.0$ 50.7$ Adjusted EBITDA margin 15.9% 16.2%

Non-GAAP Measures • Adjusted net income and earnings per share (“EPS”) - The Company believes that modifying its 2022 and 2021 net income and diluted EPS provides additional measures which are representative of the Company’s underlying performance and improves the comparability of results between reporting periods. During the three months ended March 31, 2022 and 2021, adjustments were made to reported GAAP net income and diluted EPS to exclude the impact of acquisition and integration-related expenses, coronavirus-related expenses and purchase accounting effects, where applicable. • Adjusted EBITDA and adjusted EBITDA margin - The Company uses adjusted EBITDA and the ratio of adjusted EBITDA to net sales (“adjusted EBITDA margin”), at both the consolidated and segment level, as additional measures which are representative of its underlying performance and to improve the comparability of results across reporting periods. We believe that investors use versions of these metrics in a similar manner. For these reasons, the Company believes that adjusted EBITDA and adjusted EBITDA margin, at both the consolidated and segment level, are meaningful metrics to investors in evaluating the Company’s underlying financial performance. Other companies may use different methods to calculate adjusted EBITDA and adjusted EBITDA margin. • Consolidated adjusted EBITDA is a non-GAAP measure that represents the total of net income, interest expense, acquisition and integration-related expenses, coronavirus-related expenses, purchase accounting effects, other income/expense, income tax expense, and depreciation and amortization expense. Consolidated adjusted EBITDA margin is a non-GAAP measure that represents the total of net income, interest expense, acquisition and integration-related expenses, coronavirus-related expenses, purchase accounting effects, other income/expense, income tax expense, and depreciation and amortization expense divided by net sales for the applicable period(s). • Segment adjusted EBITDA is a non-GAAP measure that represents the total of segment operating income, acquisition and integration-related expenses, coronavirus-related expenses, purchase accounting effects and depreciation and amortization expense, as applicable. Segment adjusted EBITDA margin is a non-GAAP measure that represents the total of segment operating income, acquisition and integration-related expenses, coronavirus-related expenses, purchase accounting effects and depreciation and amortization expense, as applicable, divided by net sales for the applicable period(s). Segment operating income includes all revenues, costs and expenses directly related to the segment involved. In determining segment income, neither corporate nor interest expenses are included. Segment depreciation and amortization expense relates to those assets, both tangible and intangible, that are utilized by the respective segment. 17

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2022	Apr. 30, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	1-6003
Entity Registrant Name	FEDERAL SIGNAL CORPORATION
Entity Incorporation, State or Country Name	DE
Entity Tax Identification Number	36-1063330
Entity Address, Address Line One	1415 West 22nd Street
Entity Address, City or Town	Oak Brook
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60523
City Area Code	630
Local Phone Number	954-2000
Title of 12(b) Security	Common Stock, par value $1.00 per share
Trading Symbol	FSS
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		60,611,816
Entity Shell Company	false
Entity Central Index Key	0000277509
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false

XML

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 330.2	$ 278.8
Cost of sales	254.5	210.0
Gross profit	75.7	68.8
Selling, engineering, general and administrative expenses	43.6	38.2
Amortization expense	3.3	2.6
Acquisition and integration-related expenses	0.3	0.2
Operating income	28.5	27.8
Interest expense	1.3	1.1
Other income, net	(0.4)	(0.5)
Income before income taxes	27.6	27.2
Income tax expense	7.1	5.0
Net income	$ 20.5	$ 22.2
Basic earnings per share:
Earnings per share (usd per share)	$ 0.34	$ 0.37
Diluted earnings per share:
Earnings per share (usd per share)	$ 0.33	$ 0.36
Weighted average common shares outstanding:
Basic (shares)	60.7	60.6
Diluted (shares)	61.4	61.7

XML

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 20.5	$ 22.2
Other comprehensive income (loss):
Change in foreign currency translation adjustment	(1.6)	(1.2)
Change in unrecognized net actuarial loss and prior service cost related to pension benefit plans, net of income tax expense of $0.4 and $0.2, respectively	1.0	0.7
Change in unrealized gain or loss on interest rate swaps, net of income tax expense of $0.7 and $0.3, respectively	2.1	0.8
Total other comprehensive income	1.5	0.3
Comprehensive income	$ 22.0	$ 22.5

XML

Condensed Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Tax expense on change in unrecognized net actuarial losses and prior service cost related to pension benefit plans	$ 0.4	$ 0.2
Tax expense on unrealized net gain on derivatives	$ 0.7	$ 0.3

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 39.2	$ 40.5
Accounts receivable, net of allowances for doubtful accounts of $2.6 and $2.1, respectively	156.4	136.0
Inventories	249.7	229.1
Prepaid expenses and other current assets	18.9	25.4
Total current assets	464.2	431.0
Properties and equipment, net of accumulated depreciation of $155.6 and $151.6, respectively	170.4	141.9
Rental equipment, net of accumulated depreciation of $45.3 and $43.8, respectively	111.0	108.4
Operating lease right-of-use assets	25.3	29.8
Goodwill	431.3	432.2
Intangible assets, net of accumulated amortization of $45.9 and $42.7, respectively	203.6	205.7
Deferred tax assets	8.1	8.4
Other long-term assets	11.2	8.7
Total assets	1,425.1	1,366.1
Current liabilities:
Current portion of long-term borrowings and finance lease obligations	0.5	0.6
Accounts payable	80.7	64.8
Customer deposits	28.5	21.9
Accrued liabilities:
Compensation and withholding taxes	24.2	29.9
Current operating lease liabilities	6.3	8.8
Other current liabilities	41.3	44.4
Total current liabilities	181.5	170.4
Long-term borrowings and finance lease obligations	329.2	282.2
Long-term operating lease liabilities	19.7	22.1
Long-term pension and other postretirement benefit liabilities	38.9	40.4
Deferred tax liabilities	54.5	53.2
Other long-term liabilities	13.5	13.8
Total liabilities	637.3	582.1
Stockholders’ equity:
Common stock, $1 par value per share, 90.0 shares authorized, 69.1 and 68.9 shares issued, respectively	69.1	68.9
Capital in excess of par value	259.3	256.7
Retained earnings	698.6	683.6
Treasury stock, at cost, 8.5 and 8.0 shares, respectively	(166.5)	(151.0)
Accumulated other comprehensive loss	(72.7)	(74.2)
Total stockholders’ equity	787.8	784.0
Total liabilities and stockholders’ equity	$ 1,425.1	$ 1,366.1

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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 2.6	$ 2.1
Properties and equipment, accumulated depreciation	155.6	151.6
Rental Equipment, Accumulated Depreciation	45.3	43.8
Intangible assets, accumulated amortization	$ 45.9	$ 42.7
Common stock, par value (usd per share)	$ 1
Common stock, shares authorized	90.0
Common stock, shares issued	69.1	68.9
Treasury stock, shares	8.5	8.0

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating activities:
Net income	$ 20.5	$ 22.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	13.4	12.2
Stock-based compensation expense	2.4	1.3
Deferred income taxes	0.3	0.5
Changes in operating assets and liabilities	(29.6)	(10.2)
Net cash provided by operating activities	7.0	26.0
Investing activities:
Purchases of properties and equipment	(33.7)	(4.3)
Payments for acquisition-related activity, net of cash acquired	(1.0)	(52.2)
Other, net	0.4	0.1
Net cash used for investing activities	(34.3)	(56.4)
Financing activities:
Increase in revolving lines of credit, net	46.8	10.1
Purchases of treasury stock	(13.6)	0.0
Redemptions of common stock to satisfy withholding taxes related to stock-based compensation	(1.5)	(4.0)
Cash dividends paid to stockholders	(5.5)	(5.5)
Proceeds from stock-based compensation activity	0.0	3.3
Other, net	(0.1)	0.1
Net cash provided by financing activities	26.1	4.0
Effects of foreign exchange rate changes on cash and cash equivalents	(0.1)	(0.5)
Decrease in cash and cash equivalents	(1.3)	(26.9)
Cash and cash equivalents at beginning of year	40.5	81.7
Cash and cash equivalents at end of period	$ 39.2	$ 54.8

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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Beginning Balance at Dec. 31, 2020	$ 702.1	$ 67.8	$ 240.8	$ 605.0	$ (119.8)	$ (91.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	22.2			22.2
Total other comprehensive income (loss)	0.3					0.3
Cash dividends declared	(5.5)			(5.5)
Stock-based payments:
Stock-based compensation	1.3		1.3
Stock option exercises and other	3.0	0.4	3.3		(0.7)
Performance share unit transactions	(3.8)	0.2	(0.2)		(3.8)
Ending Balance at Mar. 31, 2021	719.6	68.4	245.2	621.7	(124.3)	(91.4)
Beginning Balance at Dec. 31, 2021	784.0	68.9	256.7	683.6	(151.0)	(74.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	20.5			20.5
Total other comprehensive income (loss)	1.5					1.5
Cash dividends declared	(5.5)			(5.5)
Stock-based payments:
Stock-based compensation	2.4		2.4
Stock option exercises and other	(0.2)	0.1	0.3		(0.6)
Performance share unit transactions	(1.3)	0.1	(0.1)		(1.3)
Stock repurchase program	(13.6)				(13.6)
Ending Balance at Mar. 31, 2022	$ 787.8	$ 69.1	$ 259.3	$ 698.6	$ (166.5)	$ (72.7)

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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per common share (usd per share)	$ 0.09	$ 0.09

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Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2022

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Organization and Description of the Business

Federal Signal Corporation was founded in 1901 and was reincorporated as a Delaware corporation in 1969. References herein to the “Company,” “we,” “our” or “us” refer collectively to Federal Signal Corporation and its subsidiaries.

Products manufactured and services rendered by the Company are divided into two reportable segments: Environmental Solutions Group and Safety and Security Systems Group. The individual operating businesses are organized as such because they share certain characteristics, including technology, marketing, distribution and product application, which create long-term synergies. These segments are discussed in Note 10 – Segment Information.

Basis of Presentation and Consolidation

The accompanying unaudited condensed consolidated financial statements represent the consolidation of Federal Signal Corporation and its subsidiaries included herein and have been prepared by the Company pursuant to the rules and regulations of the United States (“U.S.”) Securities and Exchange Commission (the “SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to such rules and regulations, although the Company believes that the disclosures presented herein are adequate to ensure the information presented is not misleading. Except as otherwise noted, these condensed consolidated financial statements have been prepared in accordance with the Company’s accounting policies described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, and should be read in conjunction with those consolidated financial statements and the notes thereto.

These condensed consolidated financial statements include all normal and recurring adjustments that we considered necessary to present a fair statement of our results of operations, financial condition and cash flow. Intercompany balances and transactions have been eliminated in consolidation. During the current year, the Company is separately presenting Amortization expense on the Condensed Consolidated Statements of Operations. Accordingly, prior-year amounts have been reclassified from Selling, engineering, general and administrative (“SEG&A”) expenses to conform to current-year presentation.

The results reported in these condensed consolidated financial statements should not be regarded as necessarily indicative of results that may be expected for the entire year, which may differ materially due to, among other things, the risk factors described under Part I, Item 1A, Risk Factors, of the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, which was filed with the SEC on March 1, 2022. While we label our quarterly information using a calendar convention whereby our first, second and third quarters are labeled as ending on March 31, June 30 and September 30, respectively, it is our longstanding practice to establish interim quarterly closing dates based on a 13-week period ending on a Saturday, with our fiscal year ending on December 31. The effects of this practice are not material and exist only within a reporting year.

Recent Accounting Pronouncements and Accounting Changes

In October 2021, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2021-08, Business Combinations (Topic 805), Accounting for Contract Assets and Liabilities from Contracts with Customers, which requires an acquirer to recognize and measure contract assets and liabilities acquired in a business combination in accordance with Revenue from Contracts with Customers (Topic 606) rather than adjust them to fair value at the acquisition date. This ASU, which is applied on a prospective basis, is effective for fiscal years beginning after December 15, 2022, and early adoption is permitted. The Company early adopted this ASU effective January 1, 2022, and the guidance will be applied on a prospective basis to future business combinations, as applicable.

There are no new accounting pronouncements issued, but not yet adopted, that are expected to have a material impact on the Company’s results of operations, financial position or cash flow.

Use of Estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect (i) the reported amounts of assets and liabilities, (ii) the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and (iii) the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Significant Accounting Policies

There have been no changes to the Company’s significant accounting policies as disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021.

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Revenue Recognition

3 Months Ended

Mar. 31, 2022

Revenue Recognition [Abstract]

Revenue Recognition

REVENUE RECOGNITION

The following table presents the Company’s Net sales disaggregated by geographic region, based on the location of the end customer, and by major product line:

	Three Months Ended March 31,
(in millions)	2022		2021
Geographic Region:
U.S.	$	264.4	$	215.5
Canada	42.3		40.6
Europe/Other	23.5		22.7
Total net sales	$	330.2	$	278.8
Major Product Line:
Environmental Solutions
Vehicles and equipment (a)	$	217.4	$	179.0
Parts	40.8		35.7
Rental income (b)	9.7		7.5
Other (c)	6.3		5.9
Total	274.2		228.1
Safety and Security Systems
Public safety and security equipment	36.1		31.3
Industrial signaling equipment	14.2		13.4
Warning systems	5.7		6.0
Total	56.0		50.7
Total net sales	$	330.2	$	278.8

(a)    Includes net sales from the sale of new and used vehicles and equipment, including sales of rental equipment.

(b)    Represents income from vehicle and equipment lease arrangements with customers.

(c)    Primarily includes revenues from services, such as maintenance and repair work, and the sale of extended warranty contracts.

Contract Balances

The Company recognizes contract liabilities when cash payments, such as customer deposits, are received in advance of the Company’s satisfaction of the related performance obligations. Contract liabilities are recognized as Net sales when the related performance obligations are satisfied, which generally occurs within three to six months of the cash receipt. Contract liability balances are not materially impacted by any other factors. The Company’s contract liabilities were $32.0 million and $25.3 million as of March 31, 2022 and December 31, 2021, respectively. Contract assets, such as unbilled receivables, were not material as of any of the periods presented herein.

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Inventories

3 Months Ended

Mar. 31, 2022

Inventory Disclosure [Abstract]

Inventories

INVENTORIES

The following table summarizes the components of Inventories:

(in millions)	March 31, 2022		December 31, 2021
Finished goods	$	94.9	$	87.9
Raw materials	126.9		116.4
Work in process	27.9		24.8
Total inventories	$	249.7	$	229.1

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Debt

3 Months Ended

Mar. 31, 2022

Debt Disclosure [Abstract]

Debt Disclosure

DEBT

The following table summarizes the components of Long-term borrowings and finance lease obligations:

(in millions)	March 31, 2022		December 31, 2021
2019 Credit Agreement (a)	$	327.8	$	280.7
Finance lease obligations	1.9		2.1
Total long-term borrowings and finance lease obligations, including current portion	329.7		282.8
Less: Current finance lease obligations	0.5		0.6
Total long-term borrowings and finance lease obligations	$	329.2	$	282.2

(a)     Defined as the Second Amended and Restated Credit Agreement, dated July 30, 2019, as amended.

As more fully described within Note 11 – Fair Value Measurements, the Company uses a three-level fair value hierarchy that prioritizes the inputs used to measure fair value. The fair value of long-term debt is based on interest rates that we believe are currently available to us for issuance of debt with similar terms and remaining maturities (Level 2 input).

The following table summarizes the carrying amounts and estimated fair values of the Company’s long-term borrowings:

	March 31, 2022				December 31, 2021
(in millions)	Notional Amount		Fair Value		Notional Amount		Fair Value
Long-term borrowings (a)	$	329.7	$	329.7	$	282.8	$	282.8

(a)     Long-term borrowings includes current finance lease obligations of $0.5 million and $0.6 million as of March 31, 2022 and December 31, 2021, respectively.

Borrowings under the 2019 Credit Agreement bear interest, at the Company’s option, at a base rate or a Eurocurrency or SONIA daily rate (as each is defined in the 2019 Credit Agreement), plus, in each case, an applicable margin. The applicable margin ranges from zero to 0.75% for base rate borrowings and 1.00% to 1.75% for Eurocurrency or SONIA daily rate borrowings. The Company must also pay a commitment fee to the lenders ranging between 0.10% to 0.25% per annum on the unused portion of the $500 million revolving credit facility along with other standard fees. Letter of credit fees are payable on outstanding letters of credit in an amount equal to the applicable Eurocurrency or SONIA daily rate margin plus other customary fees.

The Company is subject to certain net leverage ratio and interest coverage ratio financial covenants under the 2019 Credit Agreement that are to be measured at each fiscal quarter-end. The Company was in compliance with all such covenants as of March 31, 2022.

As of March 31, 2022, there was $327.8 million of cash drawn and $9.8 million of undrawn letters of credit under the 2019 Credit Agreement, with $162.4 million of net availability for borrowings. As of December 31, 2021, there was $280.7 million cash drawn and $10.1 million of undrawn letters of credit under the 2019 Credit Agreement, with $209.2 million of net availability for borrowings.

The following table summarizes the gross borrowings and gross payments under the Company’s revolving credit facilities:

	Three Months Ended March 31,
(in millions)	2022		2021
Gross borrowings	$	55.0	$	45.0
Gross payments	8.2		34.9

Interest Rate Swap

On October 2, 2019, the Company entered into an interest rate swap (the “Swap”) with a notional amount of $75.0 million, as a means of fixing the floating interest rate component on $75.0 million of its variable-rate debt. The Swap is designated as a cash flow hedge, with a maturity date of July 30, 2024.

As a result of the application of hedge accounting treatment, all unrealized gains and losses related to the derivative instrument are recorded in Accumulated other comprehensive loss and are reclassified into operations in the same period in which the hedged transaction affects earnings. Hedge effectiveness is assessed quarterly. The Company does not use derivative instruments for trading or speculative purposes.

The fair value of the Company’s interest rate swaps is derived from a discounted cash flow analysis based on the terms of the contract and the interest rate curve (Level 2 inputs) and measured on a recurring basis in our Condensed Consolidated Balance Sheets.

At March 31, 2022, the fair value of the Swap was an asset of $2.2 million, which was included in Other long-term assets on the Condensed Consolidated Balance Sheet. At December 31, 2021, the fair value of the Swap was a liability of $0.7 million, which was included in Other long-term liabilities on the Condensed Consolidated Balance Sheet. During the three months ended March 31, 2022 and 2021, unrealized pre-tax gains of $2.9 million and $1.1 million, respectively, were recorded in Accumulated other comprehensive loss. No ineffectiveness was recorded in either period.

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Income Taxes	3 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXESFor the three months ended March 31, 2022, the Company recognized income tax expense of $7.1 million, resulting in an effective tax rate of 25.7%. For the three months ended March 31, 2021 the Company recognized income tax expense of $5.0 million, resulting in an effective tax rate of 18.4%. The Company’s income tax expense and effective tax rate in the prior-year quarter were lower primarily due to the recognition of $1.8 million of excess tax benefits associated with stock-based compensation activity.

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Pensions

3 Months Ended

Mar. 31, 2022

Retirement Benefits [Abstract]

Pensions

PENSIONS

The following table summarizes the components of Net periodic pension benefit: 

	U.S. Benefit Plan				Non-U.S. Benefit Plan
	Three Months Ended March 31,				Three Months Ended March 31,
(in millions)	2022		2021		2022		2021
Service cost	$	—	$	—	$	—	$	0.1
Interest cost	1.1		1.2		0.2		0.2
Amortization of actuarial loss	0.5		1.0		0.2		0.2
Expected return on plan assets	(1.7)		(2.4)		(0.5)		(0.5)
Net periodic pension benefit	$	(0.1)	$	(0.2)	$	(0.1)	$	—

The items that comprise Net periodic pension benefit, other than service cost, are included as a component of Other income, net on the Condensed Consolidated Statements of Operations.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure

COMMITMENTS AND CONTINGENCIES

Financial Commitments

The Company provides indemnifications and other guarantees in the ordinary course of business, the terms of which range in duration and often are not explicitly defined. Specifically, the Company is occasionally required to provide letters of credit and bid and performance bonds to various customers, principally to act as security for retention levels related to casualty insurance policies and to guarantee the performance of subsidiaries that engage in export and domestic transactions. At March 31, 2022, the Company had outstanding performance and financial standby letters of credit, as well as outstanding bid and performance bonds, aggregating to $37.0 million. If any such letters of credit or bonds are called, the Company would be obligated to reimburse the issuer of the letter of credit or bond. The Company believes the likelihood of any currently outstanding letter of credit or bond being called is remote.

The Company has transactions involving the sale of equipment to certain of its customers which include (i) guarantees to repurchase the equipment for a fixed price at a future date and (ii) guarantees to repurchase the equipment from the third-party lender in the event of default by the customer. As of March 31, 2022, both the single year and maximum potential cash payments the Company could be required to make to repurchase equipment under these agreements amounted to $2.6 million. The Company’s risk under these repurchase arrangements would be partially mitigated by the value of the products repurchased as part of the transaction. Historical cash requirements and losses associated with these obligations have not been significant but could increase if customer defaults exceed current expectations.

The Company has certain lease agreements for facilities owned by affiliates which include provisions requiring the Company to guarantee any remaining lease payments in the event of default. As of March 31, 2022, the total amount of future payments guaranteed under these agreements was approximately $1.6 million. The Company believes the likelihood of defaulting on these leases is remote.

Product Warranties

The Company issues product performance warranties to customers with the sale of its products. The specific terms and conditions of these warranties vary depending upon the product sold and country in which the Company does business, with warranty periods generally ranging from one to five years. The Company estimates the costs that may be incurred under its basic limited warranty and records a liability in the amount of such costs at the time the sale of the related product is recognized. Factors that affect the Company’s warranty liability include (i) the number of units under warranty, (ii) historical and anticipated rates of warranty claims and (iii) costs per claim. The Company periodically assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary.

The following table summarizes the changes in the Company’s warranty liabilities during the three months ended March 31, 2022 and 2021:

(in millions)	2022		2021
Balance at January 1	$	9.7	$	10.2
Provisions to expense	1.4		1.6
Payments	(1.8)		(2.4)
Balance at March 31	$	9.3	$	9.4

Legal Proceedings

The Company is subject to various claims, including pending and possible legal actions for product liability and other damages, and other matters arising in the ordinary course of the Company’s business. On a quarterly basis, the Company reviews uninsured material legal claims against the Company and accrues for the costs of such claims as appropriate in the exercise of management’s best judgment and experience. However, due to a lack of factual information available to the Company about a claim, or the procedural stage of a claim, it may not be possible for the Company to reasonably assess either the probability of a favorable or unfavorable outcome of the claim or to reasonably estimate the amount of loss should there be an unfavorable outcome. Therefore, for many claims, the Company cannot reasonably estimate a range of loss.

The Company believes, based on current knowledge and after consultation with counsel, that the outcome of such claims and actions will not have a material adverse effect on the Company’s results of operations or financial condition. However, in the event of unexpected future developments, it is possible that the ultimate resolution of such matters, if unfavorable, could have a material adverse effect on the Company’s results of operations, financial condition or cash flow.

Hearing Loss Litigation

The Company has been sued for monetary damages by firefighters who claim that exposure to the Company’s sirens has impaired their hearing and that the sirens are therefore defective. There were 33 cases filed during the period of 1999 through 2004, involving a total of 2,443 plaintiffs, in the Circuit Court of Cook County, Illinois. These cases involved more than 1,800 firefighter plaintiffs from locations outside of Chicago. In 2009, six additional cases were filed in Cook County, involving 299 Pennsylvania firefighter plaintiffs. During 2013, another case was filed in Cook County involving 74 Pennsylvania firefighter plaintiffs.

The trial of the first 27 of these plaintiffs’ claims occurred in 2008, whereby a Cook County jury returned a unanimous verdict in favor of the Company.

An additional 40 Chicago firefighter plaintiffs were selected for trial in 2009. Plaintiffs’ counsel later moved to reduce the number of plaintiffs from 40 to nine. The trial for these nine plaintiffs concluded with a verdict against the Company and for the plaintiffs in varying amounts totaling $0.4 million. The Company appealed this verdict. On September 13, 2012, the Illinois Appellate Court rejected this appeal. The Company thereafter filed a petition for rehearing with the Illinois Appellate Court, which was denied on February 7, 2013. The Company sought further review by filing a petition for leave to appeal with the Illinois Supreme Court on March 14, 2013. On May 29, 2013, the Illinois Supreme Court issued a summary order declining to accept review of this case. On July 1, 2013, the Company satisfied the judgments entered for these plaintiffs, which resulted in final dismissal of these cases.

A third consolidated trial involving eight Chicago firefighter plaintiffs occurred during November 2011. The jury returned a unanimous verdict in favor of the Company at the conclusion of this trial.

Following this trial, on March 12, 2012 the trial court entered an order certifying a class of the remaining Chicago Fire Department firefighter plaintiffs for trial on the sole issue of whether the Company’s sirens were defective and unreasonably dangerous. The Company petitioned the Illinois Appellate Court for interlocutory appeal of this ruling. On May 17, 2012, the Illinois Appellate Court accepted the Company’s petition. On June 8, 2012, plaintiffs moved to dismiss the appeal, agreeing with the Company that the trial court had erred in certifying a class action trial in this matter. Pursuant to plaintiffs’ motion, the Illinois Appellate Court reversed the trial court’s certification order.

Thereafter, the trial court scheduled a fourth consolidated trial involving three firefighter plaintiffs, which began in December 2012. Prior to the start of this trial, the claims of two of the three firefighter plaintiffs were dismissed. On December 17, 2012, the jury entered a complete defense verdict for the Company.

Following this defense verdict, plaintiffs again moved to certify a class of Chicago Fire Department plaintiffs for trial on the sole issue of whether the Company’s sirens were defective and unreasonably dangerous. Over the Company’s objection, the trial court granted plaintiffs’ motion for class certification on March 11, 2013 and scheduled a class action trial to begin on June 10, 2013. The Company filed a petition for review with the Illinois Appellate Court on March 29, 2013 seeking reversal of the class certification order.

On June 25, 2014, a unanimous three-judge panel of the First District Illinois Appellate Court issued its opinion reversing the class certification order of the trial court. Specifically, the Appellate Court determined that the trial court’s ruling failed to satisfy the class-action requirements that the common issues of the firefighters’ claims predominate over the individual issues and that there is an adequate representative for the class. During a status hearing on October 8, 2014, plaintiffs represented to the Court that they would again seek to certify a class of firefighters on the issue of whether the Company’s sirens were defective and unreasonably dangerous. On January 12, 2015, plaintiffs filed motions to amend their complaints to add class action allegations with respect to Chicago firefighter plaintiffs, as well as the approximately 1,800 firefighter plaintiffs from locations outside of Chicago. On March 11, 2015, the trial court granted plaintiffs’ motions to amend their complaints. On April 24, 2015, the cases were transferred to Cook County chancery court to decide the class certification issues. On March 23, 2018, plaintiffs filed a motion to certify as a class all firefighters from the Chicago Fire Department who have filed lawsuits in this matter. The Company objected to certification and the parties engaged in discovery and other matters related to this motion.

Thereafter, on December 20, 2021, the parties executed a settlement agreement to resolve claims of approximately 462 firefighters still involved in the Cook County litigation, as well as the DuPage County litigation discussed below. Under the terms of the settlement agreement, the Company has agreed to pay a lump sum of $0.2 million to resolve the claims of these firefighters. The Company has agreed to pay this lump sum amount based upon its assessment of firefighters who meet minimal bilateral hearing loss standards, which is a subset of the larger group referenced above. The settlement agreement does not require the payment of any attorney fees by the Company. The settlement agreement also provides that plaintiffs’ attorney will withdraw from representing firefighters who do not agree to the settlement. The Company has discretion to void the settlement agreement if less than 93% of these firefighters agree to settle their claims; the settlement agreement will be voided if less than 70% of eligible firefighters agree to the settlement. The settlement agreement is subject to review and approval by the Court.

The Company also filed motions to dismiss cases involving firefighters who worked for fire departments located outside of the State of Illinois based on improper venue. On February 24, 2017, the Circuit Court of Cook County entered orders dismissing the cases of 1,770 such firefighter plaintiffs from the jurisdiction of the State of Illinois. Pursuant to these orders, these plaintiffs had six months thereafter to refile their cases in jurisdictions where these firefighters are located. Prior to this six-month deadline, attorneys representing some of these plaintiffs contacted the Company regarding possible settlement of their cases. During the year ended December 31, 2017, the Company entered into a global settlement agreement with two attorneys who represented approximately 1,090 of these plaintiffs. Under the terms of the settlement agreement, the Company offered $700 per plaintiff to settle these cases and 717 plaintiffs accepted this offer as a final settlement. The settlement agreement did not require the payment of any attorney fees by the Company. The attorneys representing these plaintiffs agreed to withdraw from representing plaintiffs who did not respond to the settlement offer. It is the Company’s position that the non-settling plaintiffs who failed to timely refile their cases following the February 2017 dismissal by the Circuit Court of Cook County are now barred from doing so by the statute of limitations. The Company filed a venue motion seeking to transfer to DuPage County cases involving 10 plaintiffs who reside and work in Illinois but outside of Cook County. The Court granted this motion on June 28, 2017.

The Company was also sued on this issue outside of the Cook County, Illinois venue. Between 2007 and 2009, a total of 71 lawsuits involving 71 plaintiffs were filed in the Court of Common Pleas, Philadelphia County, Pennsylvania. Three of these cases were dismissed pursuant to pretrial motions filed by the Company. Another case was voluntarily dismissed. Prior to trial in four cases, the Company paid nominal sums to obtain dismissals.

Three trials occurred in Philadelphia involving these cases filed in 2007 through 2009. The first trial involving one of these plaintiffs occurred in 2010, when the jury returned a verdict for the plaintiff. The jury found that the Company’s siren was not defectively designed, but that the Company negligently constructed the siren. The jury awarded damages in the amount of less than $0.1 million. The Company appealed this verdict. Another trial, involving nine Philadelphia firefighter plaintiffs, also occurred in 2010 when the jury returned a defense verdict for the Company as to all claims and all plaintiffs involved in that trial. The third trial, also involving nine Philadelphia firefighter plaintiffs, was completed during 2010 when the jury returned a defense verdict for the Company as to all claims and all plaintiffs involved in that trial.

Following defense verdicts in the last two Philadelphia trials, the Company negotiated settlements with respect to all remaining filed cases in Philadelphia at that time, as well as other firefighter claimants represented by the attorney who filed the Philadelphia cases. On January 4, 2011, the Company entered into a Global Settlement Agreement (the “Settlement Agreement”) with the law firm of the attorney representing the Philadelphia claimants, on behalf of 1,125 claimants the firm represented (the “Claimants”) and who had asserted product claims against the Company (the “Claims”). Three hundred eight of the Claimants had lawsuits pending against the Company in Cook County, Illinois.

The Settlement Agreement provided that the Company pay a total amount of $3.8 million (the “Settlement Payment”) to settle the Claims (including the costs, fees and other expenses of the law firm in connection with its representation of the Claimants), subject to certain terms, conditions and procedures set forth in the Settlement Agreement. In order for the Company to be required to make the Settlement Payment: (i) each Claimant who agreed to settle his or her claims had to sign a release acceptable to the Company (a “Release”), (ii) each Claimant who agreed to the settlement and who was a plaintiff in a lawsuit, had to dismiss his or her lawsuit with prejudice, (iii) by April 29, 2011, at least 93% of the Claimants identified in the Settlement Agreement must have agreed to settle their claims and provide a signed Release to the Company and (iv) the law firm had to withdraw from representing any Claimants who did not agree to the settlement, including those who filed lawsuits. If the conditions to the settlement were met, but less than 100% of the Claimants agreed to settle their Claims and sign a Release, the Settlement Payment would be reduced by the percentage of Claimants who did not agree to the settlement.

On April 22, 2011, the Company confirmed that the terms and conditions of the Settlement Agreement had been met and made a payment of $3.6 million to conclude the settlement. The amount was based upon the Company’s receipt of 1,069 signed releases provided by Claimants, which was 95% of all Claimants identified in the Settlement Agreement.

The Company generally denies the allegations made in the claims and lawsuits by the Claimants and denies that its products caused any injuries to the Claimants. Nonetheless, the Company entered into the Settlement Agreement for the purpose of minimizing its expenses, including legal fees, and avoiding the inconvenience, uncertainty and distraction of the claims and lawsuits.

During April through October 2012, 20 new cases were filed in the Court of Common Pleas, Philadelphia County, Pennsylvania. These cases were filed on behalf of 20 Philadelphia firefighters and involved various defendants in addition to the Company. Five of these cases were subsequently dismissed. The first trial involving these 2012 Philadelphia cases occurred during December 2014 and involved three firefighter plaintiffs. The jury returned a verdict in favor of the Company. Following this trial, all of the parties agreed to settle cases involving seven firefighter plaintiffs set for trial during January 2015 for nominal amounts per plaintiff.

In January 2015, plaintiffs’ attorneys filed two new complaints in the Court of Common Pleas, Philadelphia, Pennsylvania on behalf of approximately 70 additional firefighter plaintiffs. The vast majority of the firefighters identified in these complaints were located outside of Pennsylvania. One of the complaints in these cases, which involved 11 firefighter plaintiffs from the District of Columbia, was removed to federal court in the Eastern District of Pennsylvania. Plaintiffs voluntarily dismissed all claims in this case on May 31, 2016. The Company thereafter moved to recover various fees and costs in this case, asserting that plaintiffs’ counsel failed to properly investigate these claims prior to filing suit. The Court granted this motion on April 25, 2017, awarding $0.1 million to the Company (the “Order”). After plaintiffs appealed this Order, the United States Court of Appeals for the Third Circuit affirmed the lower court decision awarding fees and costs to the Company.

With respect to claims of other out-of-state firefighters involved in these two cases, the Company moved to dismiss these claims as improperly filed in Pennsylvania. The Court granted this motion and dismissed these claims on November 5, 2015. During August through December 2015, another nine new cases were filed in the Court of Common Pleas, Philadelphia County, Pennsylvania. These cases involved a total of 193 firefighters, most of whom were located outside of Pennsylvania. The Company again moved to dismiss all claims filed by out-of-state firefighters in these cases as improperly filed in Pennsylvania. On May 24, 2016, the Court granted this motion and dismissed these claims. Plaintiffs appealed this decision and, on September 25, 2018, the appellate court reversed this dismissal. The Company then filed a petition with the appellate court requesting that the court reconsider its ruling. On December 7, 2018, the appellate court granted the Company’s petition and withdrew its prior decision. On June 25, 2020, the Court issued a decision affirming the trial court’s dismissal of these cases with prejudice.

On May 13, 2016, four new cases were filed in Philadelphia state court, involving a total of 55 Philadelphia firefighters who live in Pennsylvania. During August 2016, the Company settled a case for nominal amounts involving four Philadelphia firefighters that had been set for trial in Philadelphia state court during September 2016. During 2017, plaintiffs filed additional cases in the Court of Common Pleas, Philadelphia County, involving over 100 Philadelphia firefighter plaintiffs. During January 2017, plaintiffs filed a motion to consolidate and bifurcate, similar to a motion filed in the Pittsburgh hearing loss cases, as described below. The Company filed an opposition to this motion. These cases were then transferred to the mass tort program in Philadelphia for pretrial purposes. Plaintiffs’ counsel thereafter dismissed several plaintiffs. During November 2017, a trial involving one Philadelphia firefighter occurred. The jury returned a verdict in favor of the Company in this trial. Prior to a dismissal of these cases pursuant to the Tolling Agreement, discussed below, there was a total of 75 firefighters involved in cases pending in the Philadelphia mass tort program.

During March 2014, an action also was brought in the Court of Common Pleas of Erie County, Pennsylvania on behalf of 61 firefighters. This case likewise involves various defendants in addition to the Company. After the Company filed pretrial motions, 33 Erie County firefighter plaintiffs voluntarily dismissed their claims. Prior to a dismissal of these cases pursuant to the Tolling Agreement, discussed below, there was a total of 28 firefighters involved in cases filed in Erie County.

During August 2017, five cases involving 70 firefighter plaintiffs were filed in Lackawanna County, Pennsylvania. These cases involve firefighter plaintiffs who originally filed in Cook County several years ago and were dismissed pursuant to the Company’s forum nonconveniens motion.

On September 17, 2014, 20 lawsuits, involving a total of 193 Buffalo Fire Department firefighters, were filed in the Supreme Court of the State of New York, Erie County. All of the cases filed in Erie County, New York were removed to federal court in

the Western District of New York. Plaintiffs filed a motion to consolidate and bifurcate these cases, similar to the motion filed in the Pittsburgh hearing loss cases, as described below. The Company filed an opposition to the motion. During February 2015, a lawsuit involving one New York City firefighter plaintiff was filed in the Supreme Court of the State of New York, New York County. The plaintiff named the Company as well as several other parties as defendants. That case subsequently was transferred to federal court in the Northern District of New York and thereafter dismissed. During April 2015 through January 2016, 29 new cases involving a total of 235 firefighters were filed in various counties in the New York City area. During December 2016 through October 2017, additional cases were filed in these jurisdictions. On February 5, 2018, the Company was served with a complaint in an additional case filed in Kings County, New York. This case involved one plaintiff. Prior to a dismissal of these cases pursuant to the Tolling Agreement, discussed below, there was a total of 536 firefighters involved in cases filed in the State of New York.

During November 2015, the Company was served with a complaint filed in Union County, New Jersey state court, involving 34 New Jersey firefighters. This case was transferred to federal court in the District of New Jersey. During the period from January through May 2016, eight additional cases were filed in various New Jersey state courts. Most of the firefighters in these cases resided in New Jersey and worked at New Jersey fire departments. During December 2016, a case involving one New Jersey firefighter was filed in the United States District Court of New Jersey. On May 2, 2017, plaintiffs filed a motion to consolidate and bifurcate in the pending federal court case in New Jersey. This motion was similar to bifurcation motions filed by plaintiffs in Pittsburgh, Buffalo and Philadelphia. The Court denied the motion as premature. Pursuant to a petition filed by both parties, all New Jersey state court cases were consolidated for pretrial purposes. Prior to a dismissal of these cases pursuant to the Tolling Agreement, discussed below, there was a total of 61 firefighters involved in cases filed in New Jersey.

During May through October 2016, nine cases were filed in Suffolk County, Massachusetts state court, naming the Company as a defendant. These cases involved 194 firefighters who lived and worked in the Boston area. During August 2017, plaintiffs filed additional cases in Suffolk County court. The Company moved to transfer various cases filed in Suffolk County to other counties in Massachusetts where plaintiffs resided and worked. Prior to a dismissal of these cases pursuant to the Tolling Agreement, discussed below, there was a total of 218 firefighters involved in cases filed in Massachusetts.

During August and September 2017, plaintiffs’ attorneys filed additional hearing loss cases in Florida. The Company was the only named defendant. These cases were filed in several different counties in Florida, including Tampa, Miami and Orlando municipalities. Prior to a dismissal of these cases pursuant to the Tolling Agreement, discussed below, there was a total of 166 firefighters involved in cases filed in Florida.

During April through July 2013, additional cases were filed in Allegheny County, Pennsylvania on behalf of 247 plaintiff firefighters from Pittsburgh and against various defendants, including the Company. During May 2016, two additional cases were filed against the Company in Allegheny County involving 19 Pittsburgh firefighters. After the Company filed pretrial motions, the Court dismissed claims of 55 Pittsburgh firefighter plaintiffs. The Court scheduled trials for May, September and November 2016, for eight firefighters per trial. Prior to the first scheduled trial in Pittsburgh, the Court granted the Company’s motion for summary judgment and dismissed all claims asserted by plaintiff firefighters involved in this trial. Following an appeal by the plaintiff firefighters, the appellate court affirmed this dismissal. The next trial for six Pittsburgh firefighters started on November 7, 2016. Shortly after this trial began, plaintiffs’ counsel moved for a mistrial because a key witness suddenly became unavailable. The Court granted this motion and rescheduled this trial for March 6, 2017. During January 2017, plaintiffs also moved to consolidate and bifurcate trials involving Pittsburgh firefighters. In particular, plaintiffs sought one trial involving liability issues to apply to all Pittsburgh firefighters who filed suit against the Company. The Company filed an opposition to this motion. On April 18, 2017, the trial court granted plaintiffs’ motion to bifurcate the next Pittsburgh trial. Pursuant to a motion for clarification filed by the Company, the Court ruled that the bifurcation order would only apply to six plaintiffs who were part of the next trial group in Pittsburgh. The Company thereafter sought an interlocutory appeal of the Court’s bifurcation order. The appellate court declined to accept the appeal at that time. A bifurcated trial began on September 27, 2017 in Allegheny County, Pennsylvania. Prior to and during trial, two plaintiffs were dismissed, resulting in four plaintiffs remaining for trial. After approximately two weeks of trial, the jury found that the Company’s siren product was not defective or unreasonably dangerous and rendered a verdict in favor of the Company.

A second trial involving Pittsburgh firefighters began during January 2018. At the outset of this trial, plaintiffs’ attorneys, who represent all firefighters who have filed cases in Allegheny County, Philadelphia, Buffalo, New Jersey, Massachusetts, and Florida, as described above, requested that the Company consider settlement of various cases. This trial was continued to allow the parties to further discuss possible settlement. During March 2018, the parties agreed in principle on a framework (the “Settlement Framework”) to resolve hearing loss claims and cases in all jurisdictions involved in the hearing loss litigation except in Cook County and Lackawanna County, and excluding one case involving one firefighter in New York City. The

firefighters excluded from the Settlement Framework are represented by different attorneys. The Company has agreed to settle the cases in Lackawanna County and settled the case involving one firefighter in New York City for nominal amounts. Pursuant to the Settlement Framework, the Company would pay $700 to each firefighter who filed a lawsuit and is eligible to be part of the settlement. The Company would pay $300 to each firefighter who has not yet filed a case and is eligible to be part of the settlement. The settlement agreement does not include the payment of any attorney fees by the Company. To be eligible for settlement, among other things, firefighters must provide proof that they have high frequency noise-induced hearing loss. There are approximately 3,700 firefighters whose claims may be considered as part of this settlement, including approximately 1,320 firefighters who have ongoing filed lawsuits. This Settlement Framework was finalized in a global settlement agreement executed on November 4, 2019. Pursuant to this global settlement agreement, the parties are now in the process of determining how many of the approximately 3,700 firefighters will be eligible to participate in the settlement. In order to minimize the parties’ respective legal costs and expenses during this settlement process, on July 5, 2018, the parties entered into a tolling agreement (the “Tolling Agreement”). Pursuant to the Tolling Agreement, counsel for the settling firefighters agreed to dismiss the pending lawsuits in all jurisdictions except for the Allegheny County (Pittsburgh), Pennsylvania cases, and the Company agreed to a tolling of any statute of limitations applicable to the dismissed cases. The Tolling Agreement continued in place until the parties executed the global settlement agreement on November 4, 2019. After execution of the global settlement agreement, the Allegheny County (Pittsburgh) cases were dismissed. The global settlement agreement requires plaintiffs’ attorneys to withdraw from representing firefighters who elect not to participate in this settlement.

As of March 31, 2022, the Company has recognized an estimated liability for the potential settlement amount under the Settlement Framework. While it is reasonably possible that the ultimate resolution of this matter may result in a loss in excess of the amount accrued, the incremental loss is not expected to be material.

From 2007 through 2009, firefighters also brought hearing loss claims against the Company in New Jersey, Missouri, Maryland and Kings County, New York. All of those cases, however, were dismissed prior to trial, including four cases in the Supreme Court of Kings County, New York that were dismissed upon the Company’s motion in 2008. On appeal, the New York appellate court affirmed the trial court’s dismissal of these cases.

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Earnings Per Share

3 Months Ended

Mar. 31, 2022

Earnings Per Share [Abstract]

Earnings Per Share

EARNINGS PER SHARE

The Company computes earnings per share (“EPS”) in accordance with Accounting Standards Codification (“ASC”) 260, Earnings per Share, which requires that non-vested restricted stock containing non-forfeitable dividend rights should be treated as participating securities pursuant to the two-class method. Under the two-class method, net income is reduced by the amount of dividends declared in the period for common stock and participating securities. The remaining undistributed earnings are then allocated to common stock and participating securities as if all of the net income for the period had been distributed. The amounts of distributed and undistributed earnings allocated to participating securities for the three months ended March 31, 2022 and 2021 were insignificant and did not materially impact the calculation of basic or diluted EPS.

Basic EPS is computed by dividing income available to common stockholders by the weighted average number of shares of common stock and non-vested restricted stock awards outstanding for the period.

Diluted EPS is computed using the weighted average number of shares of common stock and non-vested restricted stock awards outstanding for the year, plus the effect of dilutive potential common shares outstanding during the period. The dilutive effect of common stock equivalents is determined using the more dilutive of the two-class method or alternative methods. The Company uses the treasury stock method to determine the potentially dilutive impact of our employee stock options and restricted stock units, and the contingently issuable method for our performance-based restricted stock unit awards.

For the three months ended March 31, 2022, options to purchase 0.2 million shares of the Company’s common stock had an anti-dilutive effect on EPS, and accordingly, were excluded from the calculation of diluted EPS. For the three months ended March 31, 2021, the number of options to purchase shares of the Company’s common stock that had an anti-dilutive effect on EPS was immaterial.

The following table reconciles Net income to basic and diluted EPS:

	Three Months Ended March 31,
(in millions, except per share data)	2022		2021
Net income	$	20.5	$	22.2
Weighted average shares outstanding – Basic	60.7		60.6
Dilutive effect of common stock equivalents	0.7		1.1
Weighted average shares outstanding – Diluted	61.4		61.7
Earnings per share:
Basic	$	0.34	$	0.37
Diluted	0.33		0.36

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Stockholders' Equity

3 Months Ended

Jun. 30, 2022

Equity [Abstract]

Stockholders' Equity

STOCKHOLDERS’ EQUITY

Dividends

On February 18, 2022, the Company’s Board of Directors (the “Board”) declared a quarterly cash dividend of $0.09 per common share. The dividend totaled $5.5 million and was distributed on April 1, 2022 to stockholders of record at the close of business on March 18, 2022.

On April 26, 2022, the Board declared a quarterly cash dividend of $0.09 per common share payable on June 3, 2022 to stockholders of record at the close of business on May 20, 2022.

Stock Repurchase Program

In November 2014, the Board authorized a stock repurchase program of up to $75.0 million of the Company’s common stock. In March 2020, the Board authorized an additional stock repurchase program of up to $75.0 million of the Company’s common stock. The March 2020 program supplements the Board’s prior authorization under the November 2014 program, which remains in effect.

The stock repurchase programs are intended primarily to facilitate purchases of Company stock as a means to provide cash returns to stockholders, enhance stockholder returns and manage the Company’s capital structure. Under its stock repurchase programs, the Company is authorized to repurchase, from time to time, shares of its outstanding common stock. Stock repurchases by the Company are subject to market conditions and other factors and may be commenced, suspended or discontinued at any time.

During the three months ended March 31, 2022, the Company repurchased 395,370 shares for a total of $13.6 million under its stock repurchase programs. No shares were repurchased under the stock repurchase programs during the three months ended March 31, 2021.

Accumulated Other Comprehensive Loss

The following tables summarize the changes in each component of Accumulated other comprehensive loss, net of tax in the three months ended March 31, 2022 and 2021:

(in millions) (a)	Actuarial Losses		Prior Service Costs		Foreign Currency Translation		Interest Rate Swaps		Total
Balance at January 1, 2022	$	(67.9)	$	(2.4)	$	(3.4)	$	(0.5)	$	(74.2)
Other comprehensive income (loss) before reclassifications	0.5		—		(1.6)		1.9		0.8
Amounts reclassified from accumulated other comprehensive loss	0.5		—		—		0.2		0.7
Net current-period other comprehensive income (loss)	1.0		—		(1.6)		2.1		1.5
Balance at March 31, 2022	$	(66.9)	$	(2.4)	$	(5.0)	$	1.6	$	(72.7)

(in millions) (a)	Actuarial Losses		Prior Service Costs		Foreign Currency Translation		Interest Rate Swaps		Total
Balance at January 1, 2021	$	(88.2)	$	(2.6)	$	1.3	$	(2.2)	$	(91.7)
Other comprehensive (loss) income before reclassifications	(0.2)		—		(1.2)		1.0		(0.4)
Amounts reclassified from accumulated other comprehensive loss	0.9		—		—		(0.2)		0.7
Net current-period other comprehensive income (loss)	0.7		—		(1.2)		0.8		0.3
Balance at March 31, 2021	$	(87.5)	$	(2.6)	$	0.1	$	(1.4)	$	(91.4)

(a)    Amounts in parentheses indicate losses.

The following table summarizes the amounts reclassified from Accumulated other comprehensive loss, net of tax, in the three months ended March 31, 2022 and 2021 and the affected line item in the Condensed Consolidated Statements of Operations:

Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss				Affected Line Item in Condensed Consolidated Statements of Operations
	2022		2021
(in millions) (a)
Amortization of actuarial losses of defined benefit pension plans	$	(0.7)	$	(1.2)	Other income, net
Interest rate swaps	(0.2)		0.2		Interest expense
Total before tax	(0.9)		(1.0)
Income tax benefit	0.2		0.3		Income tax expense
Total reclassifications for the period, net of tax	$	(0.7)	$	(0.7)

(a)    Amounts in parentheses indicate losses.

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Segment Information

3 Months Ended

Mar. 31, 2022

Segment Reporting [Abstract]

Segment Information

SEGMENT INFORMATION

The Company has two reportable segments: the Environmental Solutions Group and the Safety and Security Systems Group. Business units are organized under each reportable segment because they share certain characteristics, such as technology, marketing, distribution and product application, which create long-term synergies.

The following tables summarize the Company’s operations by segment, including Net sales, Operating income (loss), and Total assets:

	Three Months Ended March 31,
(in millions)	2022		2021
Net sales:
Environmental Solutions	$	274.2	$	228.1
Safety and Security Systems	56.0		50.7
Total net sales	$	330.2	$	278.8
Operating income (loss):
Environmental Solutions	$	26.8	$	27.1
Safety and Security Systems	7.9		7.2
Corporate and eliminations	(6.2)		(6.5)
Total operating income	28.5		27.8
Interest expense	1.3		1.1
Other income, net	(0.4)		(0.5)
Income before income taxes	$	27.6	$	27.2

(in millions)	March 31, 2022		December 31, 2021
Total assets:
Environmental Solutions	$	1,129.6	$	1,098.2
Safety and Security Systems	258.5		226.9
Corporate and eliminations	37.0		41.0
Total assets	$	1,425.1	$	1,366.1

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Fair Value Measurements

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Fair Value Measurements

FAIR VALUE MEASUREMENTS

The Company uses a three-level fair value hierarchy that prioritizes the inputs used to measure fair value. This hierarchy maximizes the use of observable inputs and minimizes the use of unobservable inputs. Observable inputs are developed based on market data obtained from independent sources, while unobservable inputs reflect the Company’s assumptions about valuation based on the best information available in the circumstances. The three levels of inputs are classified as follows:

•Level 1 — quoted prices in active markets for identical assets or liabilities;

•Level 2 — observable inputs, other than quoted prices included in Level 1, such as quoted prices for markets that are not active, or other inputs that are observable or can be corroborated by observable market data; and

•Level 3 — unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities, including certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

In determining fair value, the Company uses various valuation approaches within the fair value measurement framework. The valuation methodologies used for the Company’s assets and liabilities measured at fair value and their classification in the valuation hierarchy are summarized below.

Cash Equivalents

Cash equivalents primarily consist of time-based deposits and interest-bearing instruments with maturities of three months or less. The Company classified cash equivalents as Level 1 due to the short-term nature of these instruments and measured the fair value based on quoted prices in active markets for identical assets.

Interest Rate Swaps

As described in Note 4 – Debt, the Company may, from time to time, execute interest rate swaps as a means of fixing the floating interest rate component on a portion of its floating-rate debt. The Company classifies its interest rate swaps as Level 2 due to the use of a discounted cash flow model based on the terms of the contract and the interest rate curve (Level 2 inputs) to calculate the fair value of the swaps.

Contingent Consideration

The Company has contingent obligations to transfer up to $15.5 million and $7.5 million to the former owners of Mark Rite Lines Equipment Company, Inc. (“MRL”) and Deist Industries, Inc. and certain of its affiliates (collectively, “Deist”), respectively, if specified financial results are met over future reporting periods (i.e., an earn-out). The MRL and Deist acquisitions were completed on July 1, 2019 and December 30, 2021, respectively. The contingent earn-out payments, if earned, would be due to be paid following the third anniversary of the closing of the respective acquisitions.

Liabilities for contingent consideration are measured at fair value each reporting period, with the acquisition-date fair value included as part of the consideration transferred. Subsequent changes in fair value are included as a component of Acquisition and integration-related expenses on the Condensed Consolidated Statements of Operations.

The Company uses an income approach to value the contingent consideration obligation based on the present value of risk-adjusted future cash flows under either a scenario-based or option-pricing method, as appropriate. Due to the lack of relevant observable market data over fair value inputs, such as prospective financial information or probabilities of future events as of March 31, 2022, the Company has classified the contingent consideration liability within Level 3 of the fair value hierarchy outlined in ASC 820, Fair Value Measurements.

The following table summarizes the Company’s assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2022:

	Fair Value Measurement at Reporting Date Using
(in millions)	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	0.1	$	—	$	—	$	0.1
Interest rate swap	—		2.2		—		2.2
Liabilities:
Contingent consideration	—		—		2.7		2.7

The following table provides a roll-forward of the fair value of recurring Level 3 fair value measurements in the three months ended March 31, 2022 and 2021:

(in millions)	2022		2021
Contingent consideration liability, at January 1	$	2.7	$	4.2
Total losses included in earnings	—		—
Contingent consideration liability, at March 31	$	2.7	$	4.2

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2022

Accounting Policies [Abstract]

Organization and Description of the Business

Organization and Description of the Business

Federal Signal Corporation was founded in 1901 and was reincorporated as a Delaware corporation in 1969. References herein to the “Company,” “we,” “our” or “us” refer collectively to Federal Signal Corporation and its subsidiaries.

Products manufactured and services rendered by the Company are divided into two reportable segments: Environmental Solutions Group and Safety and Security Systems Group. The individual operating businesses are organized as such because they share certain characteristics, including technology, marketing, distribution and product application, which create long-term synergies. These segments are discussed in Note 10 – Segment Information.

Basis of Presentation and Consolidation

Basis of Presentation and Consolidation

The accompanying unaudited condensed consolidated financial statements represent the consolidation of Federal Signal Corporation and its subsidiaries included herein and have been prepared by the Company pursuant to the rules and regulations of the United States (“U.S.”) Securities and Exchange Commission (the “SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to such rules and regulations, although the Company believes that the disclosures presented herein are adequate to ensure the information presented is not misleading. Except as otherwise noted, these condensed consolidated financial statements have been prepared in accordance with the Company’s accounting policies described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, and should be read in conjunction with those consolidated financial statements and the notes thereto.

These condensed consolidated financial statements include all normal and recurring adjustments that we considered necessary to present a fair statement of our results of operations, financial condition and cash flow. Intercompany balances and transactions have been eliminated in consolidation. During the current year, the Company is separately presenting Amortization expense on the Condensed Consolidated Statements of Operations. Accordingly, prior-year amounts have been reclassified from Selling, engineering, general and administrative (“SEG&A”) expenses to conform to current-year presentation.

The results reported in these condensed consolidated financial statements should not be regarded as necessarily indicative of results that may be expected for the entire year, which may differ materially due to, among other things, the risk factors described under Part I, Item 1A, Risk Factors, of the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, which was filed with the SEC on March 1, 2022. While we label our quarterly information using a calendar convention whereby our first, second and third quarters are labeled as ending on March 31, June 30 and September 30, respectively, it is our longstanding practice to establish interim quarterly closing dates based on a 13-week period ending on a Saturday, with our fiscal year ending on December 31. The effects of this practice are not material and exist only within a reporting year.

Recent Accounting Pronouncements and Accounting Changes

Recent Accounting Pronouncements and Accounting Changes

In October 2021, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2021-08, Business Combinations (Topic 805), Accounting for Contract Assets and Liabilities from Contracts with Customers, which requires an acquirer to recognize and measure contract assets and liabilities acquired in a business combination in accordance with Revenue from Contracts with Customers (Topic 606) rather than adjust them to fair value at the acquisition date. This ASU, which is applied on a prospective basis, is effective for fiscal years beginning after December 15, 2022, and early adoption is permitted. The Company early adopted this ASU effective January 1, 2022, and the guidance will be applied on a prospective basis to future business combinations, as applicable.

There are no new accounting pronouncements issued, but not yet adopted, that are expected to have a material impact on the Company’s results of operations, financial position or cash flow.

Use of Estimates

Use of Estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect (i) the reported amounts of assets and liabilities, (ii) the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and (iii) the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Fair Value Measurements

The Company uses a three-level fair value hierarchy that prioritizes the inputs used to measure fair value. This hierarchy maximizes the use of observable inputs and minimizes the use of unobservable inputs. Observable inputs are developed based on market data obtained from independent sources, while unobservable inputs reflect the Company’s assumptions about valuation based on the best information available in the circumstances. The three levels of inputs are classified as follows:

•Level 1 — quoted prices in active markets for identical assets or liabilities;

•Level 2 — observable inputs, other than quoted prices included in Level 1, such as quoted prices for markets that are not active, or other inputs that are observable or can be corroborated by observable market data; and

•Level 3 — unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities, including certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

In determining fair value, the Company uses various valuation approaches within the fair value measurement framework. The valuation methodologies used for the Company’s assets and liabilities measured at fair value and their classification in the valuation hierarchy are summarized below.

Cash Equivalents

Cash equivalents primarily consist of time-based deposits and interest-bearing instruments with maturities of three months or less. The Company classified cash equivalents as Level 1 due to the short-term nature of these instruments and measured the fair value based on quoted prices in active markets for identical assets.

Interest Rate Swaps

As described in Note 4 – Debt, the Company may, from time to time, execute interest rate swaps as a means of fixing the floating interest rate component on a portion of its floating-rate debt. The Company classifies its interest rate swaps as Level 2 due to the use of a discounted cash flow model based on the terms of the contract and the interest rate curve (Level 2 inputs) to calculate the fair value of the swaps.

Contingent Consideration

The Company has contingent obligations to transfer up to $15.5 million and $7.5 million to the former owners of Mark Rite Lines Equipment Company, Inc. (“MRL”) and Deist Industries, Inc. and certain of its affiliates (collectively, “Deist”), respectively, if specified financial results are met over future reporting periods (i.e., an earn-out). The MRL and Deist acquisitions were completed on July 1, 2019 and December 30, 2021, respectively. The contingent earn-out payments, if earned, would be due to be paid following the third anniversary of the closing of the respective acquisitions.

Liabilities for contingent consideration are measured at fair value each reporting period, with the acquisition-date fair value included as part of the consideration transferred. Subsequent changes in fair value are included as a component of Acquisition and integration-related expenses on the Condensed Consolidated Statements of Operations.

The Company uses an income approach to value the contingent consideration obligation based on the present value of risk-adjusted future cash flows under either a scenario-based or option-pricing method, as appropriate. Due to the lack of relevant observable market data over fair value inputs, such as prospective financial information or probabilities of future events as of March 31, 2022, the Company has classified the contingent consideration liability within Level 3 of the fair value hierarchy outlined in ASC 820, Fair Value Measurements.

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Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2022

Disaggregation of Revenue [Abstract]

Net Sales Disaggregated By Geographic Region and Major Product Line

The following table presents the Company’s Net sales disaggregated by geographic region, based on the location of the end customer, and by major product line:

	Three Months Ended March 31,
(in millions)	2022		2021
Geographic Region:
U.S.	$	264.4	$	215.5
Canada	42.3		40.6
Europe/Other	23.5		22.7
Total net sales	$	330.2	$	278.8
Major Product Line:
Environmental Solutions
Vehicles and equipment (a)	$	217.4	$	179.0
Parts	40.8		35.7
Rental income (b)	9.7		7.5
Other (c)	6.3		5.9
Total	274.2		228.1
Safety and Security Systems
Public safety and security equipment	36.1		31.3
Industrial signaling equipment	14.2		13.4
Warning systems	5.7		6.0
Total	56.0		50.7
Total net sales	$	330.2	$	278.8

(a)    Includes net sales from the sale of new and used vehicles and equipment, including sales of rental equipment.

(b)    Represents income from vehicle and equipment lease arrangements with customers.

(c)    Primarily includes revenues from services, such as maintenance and repair work, and the sale of extended warranty contracts.

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Inventories (Tables)

3 Months Ended

Mar. 31, 2022

Inventory Disclosure [Abstract]

Components of Inventories

The following table summarizes the components of Inventories:

(in millions)	March 31, 2022		December 31, 2021
Finished goods	$	94.9	$	87.9
Raw materials	126.9		116.4
Work in process	27.9		24.8
Total inventories	$	249.7	$	229.1

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Debt (Tables)

3 Months Ended

Mar. 31, 2022

Debt Disclosure [Abstract]

Summary of Components of Long-Term Borrowings and Finance Lease Obligations

The following table summarizes the components of Long-term borrowings and finance lease obligations:

(in millions)	March 31, 2022		December 31, 2021
2019 Credit Agreement (a)	$	327.8	$	280.7
Finance lease obligations	1.9		2.1
Total long-term borrowings and finance lease obligations, including current portion	329.7		282.8
Less: Current finance lease obligations	0.5		0.6
Total long-term borrowings and finance lease obligations	$	329.2	$	282.2

(a)     Defined as the Second Amended and Restated Credit Agreement, dated July 30, 2019, as amended.

Schedule of Carrying Amounts and Estimated Fair Values of Long-Term Borrowings

The following table summarizes the carrying amounts and estimated fair values of the Company’s long-term borrowings:

	March 31, 2022				December 31, 2021
(in millions)	Notional Amount		Fair Value		Notional Amount		Fair Value
Long-term borrowings (a)	$	329.7	$	329.7	$	282.8	$	282.8

(a)     Long-term borrowings includes current finance lease obligations of $0.5 million and $0.6 million as of March 31, 2022 and December 31, 2021, respectively.

Schedule of Gross Borrowings and Gross Payments

The following table summarizes the gross borrowings and gross payments under the Company’s revolving credit facilities:

	Three Months Ended March 31,
(in millions)	2022		2021
Gross borrowings	$	55.0	$	45.0
Gross payments	8.2		34.9

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Pensions (Tables)

3 Months Ended

Mar. 31, 2022

Retirement Benefits [Abstract]

Summary of Components of Net Periodic Pension (Benefit) Expense

The following table summarizes the components of Net periodic pension benefit: 

	U.S. Benefit Plan				Non-U.S. Benefit Plan
	Three Months Ended March 31,				Three Months Ended March 31,
(in millions)	2022		2021		2022		2021
Service cost	$	—	$	—	$	—	$	0.1
Interest cost	1.1		1.2		0.2		0.2
Amortization of actuarial loss	0.5		1.0		0.2		0.2
Expected return on plan assets	(1.7)		(2.4)		(0.5)		(0.5)
Net periodic pension benefit	$	(0.1)	$	(0.2)	$	(0.1)	$	—

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability

The following table summarizes the changes in the Company’s warranty liabilities during the three months ended March 31, 2022 and 2021:

(in millions)	2022		2021
Balance at January 1	$	9.7	$	10.2
Provisions to expense	1.4		1.6
Payments	(1.8)		(2.4)
Balance at March 31	$	9.3	$	9.4

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2022

Earnings Per Share [Abstract]

Reconciliation of Net Income to Basic and Diluted EPS

The following table reconciles Net income to basic and diluted EPS:

	Three Months Ended March 31,
(in millions, except per share data)	2022		2021
Net income	$	20.5	$	22.2
Weighted average shares outstanding – Basic	60.7		60.6
Dilutive effect of common stock equivalents	0.7		1.1
Weighted average shares outstanding – Diluted	61.4		61.7
Earnings per share:
Basic	$	0.34	$	0.37
Diluted	0.33		0.36

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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2022

Equity [Abstract]

Changes in Each Component of Accumulated Other Comprehensive Loss

The following tables summarize the changes in each component of Accumulated other comprehensive loss, net of tax in the three months ended March 31, 2022 and 2021:

(in millions) (a)	Actuarial Losses		Prior Service Costs		Foreign Currency Translation		Interest Rate Swaps		Total
Balance at January 1, 2022	$	(67.9)	$	(2.4)	$	(3.4)	$	(0.5)	$	(74.2)
Other comprehensive income (loss) before reclassifications	0.5		—		(1.6)		1.9		0.8
Amounts reclassified from accumulated other comprehensive loss	0.5		—		—		0.2		0.7
Net current-period other comprehensive income (loss)	1.0		—		(1.6)		2.1		1.5
Balance at March 31, 2022	$	(66.9)	$	(2.4)	$	(5.0)	$	1.6	$	(72.7)

(in millions) (a)	Actuarial Losses		Prior Service Costs		Foreign Currency Translation		Interest Rate Swaps		Total
Balance at January 1, 2021	$	(88.2)	$	(2.6)	$	1.3	$	(2.2)	$	(91.7)
Other comprehensive (loss) income before reclassifications	(0.2)		—		(1.2)		1.0		(0.4)
Amounts reclassified from accumulated other comprehensive loss	0.9		—		—		(0.2)		0.7
Net current-period other comprehensive income (loss)	0.7		—		(1.2)		0.8		0.3
Balance at March 31, 2021	$	(87.5)	$	(2.6)	$	0.1	$	(1.4)	$	(91.4)

(a)    Amounts in parentheses indicate losses.

Reclassification from Accumulated Other Comprehensive Loss, Net of Tax

The following table summarizes the amounts reclassified from Accumulated other comprehensive loss, net of tax, in the three months ended March 31, 2022 and 2021 and the affected line item in the Condensed Consolidated Statements of Operations:

Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss				Affected Line Item in Condensed Consolidated Statements of Operations
	2022		2021
(in millions) (a)
Amortization of actuarial losses of defined benefit pension plans	$	(0.7)	$	(1.2)	Other income, net
Interest rate swaps	(0.2)		0.2		Interest expense
Total before tax	(0.9)		(1.0)
Income tax benefit	0.2		0.3		Income tax expense
Total reclassifications for the period, net of tax	$	(0.7)	$	(0.7)

(a)    Amounts in parentheses indicate losses.

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2022

Segment Reporting [Abstract]

Summary of Net Sales, Operating Income (Loss), and Total Assets by Segment

The following tables summarize the Company’s operations by segment, including Net sales, Operating income (loss), and Total assets:

	Three Months Ended March 31,
(in millions)	2022		2021
Net sales:
Environmental Solutions	$	274.2	$	228.1
Safety and Security Systems	56.0		50.7
Total net sales	$	330.2	$	278.8
Operating income (loss):
Environmental Solutions	$	26.8	$	27.1
Safety and Security Systems	7.9		7.2
Corporate and eliminations	(6.2)		(6.5)
Total operating income	28.5		27.8
Interest expense	1.3		1.1
Other income, net	(0.4)		(0.5)
Income before income taxes	$	27.6	$	27.2

(in millions)	March 31, 2022		December 31, 2021
Total assets:
Environmental Solutions	$	1,129.6	$	1,098.2
Safety and Security Systems	258.5		226.9
Corporate and eliminations	37.0		41.0
Total assets	$	1,425.1	$	1,366.1

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Fair Value of Assets and Liabilities

The following table summarizes the Company’s assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2022:

	Fair Value Measurement at Reporting Date Using
(in millions)	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents	$	0.1	$	—	$	—	$	0.1
Interest rate swap	—		2.2		—		2.2
Liabilities:
Contingent consideration	—		—		2.7		2.7

Roll-Forward of Fair Value of Recurring Level 3 Fair Value Measurements

The following table provides a roll-forward of the fair value of recurring Level 3 fair value measurements in the three months ended March 31, 2022 and 2021:

(in millions)	2022		2021
Contingent consideration liability, at January 1	$	2.7	$	4.2
Total losses included in earnings	—		—
Contingent consideration liability, at March 31	$	2.7	$	4.2

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Summary of Significant Accounting Policies (Details)	3 Months Ended
	Mar. 31, 2022 Segment
Accounting Policies [Abstract]
Number of reportable segments	2

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Acquisitions - Deist Acquisition (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Business Acquisition [Line Items]
Net sales	$ 330.2	$ 278.8
Total operating income	$ 28.5	$ 27.8

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Acquisitions - Ground Force Acquisition (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Business Acquisition [Line Items]
Net sales	$ 330.2	$ 278.8
Total operating income	$ 28.5	$ 27.8

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Acquisitions - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Business Acquisition [Line Items]
Net sales	$ 330.2	$ 278.8
Total operating income	$ 28.5	$ 27.8

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Revenue Recognition - Disaggregation of Revenue From Contracts With Customers (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Net sales		$ 330.2	$ 278.8
U.S.
Disaggregation of Revenue [Line Items]
Net sales		264.4	215.5
Canada
Disaggregation of Revenue [Line Items]
Net sales		42.3	40.6
Europe/Other
Disaggregation of Revenue [Line Items]
Net sales		23.5	22.7
Environmental Solutions
Disaggregation of Revenue [Line Items]
Net sales		274.2	228.1
Environmental Solutions | Vehicles and equipment
Disaggregation of Revenue [Line Items]
Net sales	[1]	217.4	179.0
Environmental Solutions | Parts
Disaggregation of Revenue [Line Items]
Net sales		40.8	35.7
Environmental Solutions | Rental income
Disaggregation of Revenue [Line Items]
Net sales	[2]	9.7	7.5
Environmental Solutions | Other
Disaggregation of Revenue [Line Items]
Net sales	[3]	6.3	5.9
Safety and Security Systems
Disaggregation of Revenue [Line Items]
Net sales		56.0	50.7
Safety and Security Systems | Public safety and security equipment
Disaggregation of Revenue [Line Items]
Net sales		36.1	31.3
Safety and Security Systems | Industrial signaling equipment
Disaggregation of Revenue [Line Items]
Net sales		14.2	13.4
Safety and Security Systems | Warning systems
Disaggregation of Revenue [Line Items]
Net sales		$ 5.7	$ 6.0

[1] Includes net sales from the sale of new and used vehicles and equipment, including sales of rental equipment.

[2] Represents income from vehicle and equipment lease arrangements with customers.

[3] Primarily includes revenues from services, such as maintenance and repair work, and the sale of extended warranty contracts.

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Revenue Recognition - Contract Liabilities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Contract with Customer, Liability [Abstract]
Description of performance obligation timing	Contract liabilities are recognized as Net sales when the related performance obligations are satisfied, which generally occurs within three to six months of the cash receipt.
Contract liabilities	$ 32.0	$ 25.3

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Inventories - Components of Inventories (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Inventory Disclosure [Abstract]
Finished goods	$ 94.9	$ 87.9
Raw materials	126.9	116.4
Work in process	27.9	24.8
Total inventories	$ 249.7	$ 229.1

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Debt - Summary of Components of Long-Term Borrowings and Finance Lease Obligations (Details) - USD ($) $ in Millions	Mar. 31, 2022		Dec. 31, 2021
Debt Instrument [Line Items]
Long-term borrowings	$ 327.8	[1]	$ 280.7
Finance lease obligations	1.9		2.1
Total long-term borrowings and finance lease obligations, including current portion	329.7		282.8
Current finance lease obligations	0.5		0.6
Total long-term borrowings and finance lease obligations	$ 329.2		$ 282.2

[1] Defined as the Second Amended and Restated Credit Agreement, dated July 30, 2019, as amended.

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Debt - Summary of Carrying Amounts and Estimated Fair Values of Long-Term Borrowings (Details) - USD ($) $ in Millions		Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Long-term borrowings		$ 329.7	$ 282.8
Current portion of long-term borrowings and finance lease obligations		0.5	0.6
Notional Amount
Debt Instrument [Line Items]
Long-term borrowings	[1]	329.7	282.8
Fair Value
Debt Instrument [Line Items]
Long-term borrowings	[1]	$ 329.7	$ 282.8

[1] Long-term borrowings includes current finance lease obligations of $0.5 million and $0.6 million as of March 31, 2022 and December 31, 2021, respectively.

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Debt - Schedule of Gross Borrowings and Gross Payments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Line of Credit Facility [Line Items]
Gross borrowings	$ 55.0	$ 45.0
Gross payments	$ 8.2	$ 34.9

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Debt - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Debt Instrument [Line Items]
Unrealized pre-tax gain (loss) on interest rate swap cash flow hedges, recorded in accumulated other comprehensive loss	$ 2.9	$ 1.1
Interest rate swap liability, fair value			$ 0.7
Interest rate swap asset, fair value	$ 2.2
2019 Credit Agreement | Minimum
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage	0.10%
2019 Credit Agreement | Maximum
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage	0.25%
2019 Credit Agreement | Base Rate | Minimum
Debt Instrument [Line Items]
Base rate borrowings margin range	0.00%
2019 Credit Agreement | Base Rate | Maximum
Debt Instrument [Line Items]
Base rate borrowings margin range	0.75%
2019 Credit Agreement | LIBOR | Minimum
Debt Instrument [Line Items]
Base rate borrowings margin range	1.00%
2019 Credit Agreement | LIBOR | Maximum
Debt Instrument [Line Items]
Base rate borrowings margin range	1.75%
2019 Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowings	$ 500.0
Credit facility outstanding amount	327.8		280.7
Remaining borrowing capacity	162.4		209.2
2019 Credit Agreement | Letter of Credit
Debt Instrument [Line Items]
Credit facility outstanding amount	9.8		$ 10.1
Interest Rate Swap
Debt Instrument [Line Items]
Credit facility outstanding amount	75.0
Interest rate swap, notional amount	$ 75.0

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Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details) $ in Millions	Mar. 31, 2022 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 432.2
Goodwill, ending balance	$ 431.3

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Goodwill and Other Intangible Assets - Gross Carrying Amount and Accumulated Amortization (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (45.9)	$ (42.7)
Total intangible assets, net	$ 203.6	$ 205.7

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Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 3.3	$ 2.6

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Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income tax expense	$ 7.1	$ 5.0
Excess tax benefit from stock compensation activity	$ 1.8
Effective tax rate	25.70%	18.40%

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Pensions - Summary of Components of Net Periodic Pension Expense (Benefit) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
U.S. Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0.0	$ 0.0
Interest cost	1.1	1.2
Amortization of actuarial loss	0.5	1.0
Expected return on plan assets	(1.7)	(2.4)
Net periodic pension benefit	(0.1)	(0.2)
Non-U.S. Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.0	0.1
Interest cost	0.2	0.2
Amortization of actuarial loss	0.2	0.2
Expected return on plan assets	(0.5)	(0.5)
Net periodic pension benefit	$ (0.1)	$ 0.0

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Commitments and Contingencies - Summary of Changes in Warranty Liabilities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at January 1	$ 9.7	$ 10.2
Provisions to expense	1.4	1.6
Payments	(1.8)	(2.4)
Balance at March 31	$ 9.3	$ 9.4
Minimum
Product Warranty Liability [Line Items]
Warranty period	1 year
Maximum
Product Warranty Liability [Line Items]
Warranty period	5 years

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Commitments and Contingencies - Additional Information (Details)													1 Months Ended																		4 Months Ended	5 Months Ended		6 Months Ended	7 Months Ended		10 Months Ended		11 Months Ended	12 Months Ended								36 Months Ended			72 Months Ended
	Dec. 20, 2021 USD ($) Plaintiff	Jul. 05, 2018 plaintiff Plaintiff USD ($)	Feb. 05, 2018 Plaintiff	Jun. 28, 2017 Plaintiff	Apr. 25, 2017 USD ($)	Feb. 24, 2017 Plaintiff	May 13, 2016 case plaintiff	Jan. 12, 2015 Plaintiff	Sep. 17, 2014 Plaintiff case	Nov. 30, 2012 Plaintiff	Apr. 29, 2011 USD ($)	Apr. 22, 2011 USD ($) Plaintiff	Mar. 31, 2018 USD ($)	Mar. 31, 2018 plaintiff	Mar. 31, 2018 Plaintiff	Nov. 30, 2017 plaintiff	Sep. 30, 2017 Plaintiff plaintiff	Aug. 31, 2017 Plaintiff	Dec. 31, 2016 Plaintiff	Aug. 30, 2016 plaintiff	May 31, 2016 Plaintiff	Nov. 30, 2015 Plaintiff	Feb. 28, 2015 Plaintiff	Jan. 31, 2015 case	Jan. 31, 2015 Plaintiff	Jan. 31, 2015 Case	Dec. 31, 2014 Plaintiff	Mar. 31, 2014 plaintiff Plaintiff	Dec. 31, 2012 Plaintiff	Nov. 30, 2011 Plaintiff	Jul. 31, 2013 Plaintiff	May 31, 2016 Case	Dec. 31, 2015 Plaintiff case	Oct. 31, 2016 Case plaintiff	Nov. 30, 2016 plaintiff	Oct. 31, 2012 Case case Plaintiff	Jan. 31, 2016 Case	Nov. 05, 2015 Case	Sep. 30, 2017 plaintiff	Dec. 31, 2017 USD ($) Plaintiff plaintiff	Dec. 31, 2013 plaintiff	Dec. 31, 2010 USD ($)	Dec. 31, 2010 case	Dec. 31, 2010 plaintiff	Dec. 31, 2010 Plaintiff	Dec. 31, 2009 USD ($) Plaintiff plaintiff case	Dec. 31, 2008 Plaintiff	Dec. 31, 2009 case	Dec. 31, 2009 Plaintiff	Dec. 31, 2009 Case	Dec. 31, 2004 case plaintiff	Mar. 31, 2022 USD ($)	Jan. 04, 2011 Plaintiff
Commitments Disclosure [Line Items]
Outstanding letters of credit and bonds | $																																																				$ 37,000,000
Number of plaintiffs (plaintiff)															1,320
Gain contingency, unrecorded amount | $					$ 100,000
Settlement offer per eligible plaintiff who has already filed a lawsuit | $													$ 700
Settlement offer per eligible plaintiff who has not already filed a lawsuit | $													$ 300
Number of firefighters considered as part of the settlement															3,700
Number of plaintiffs cases dismissed (plaintiff)										2
Circuit Court Of Cook County
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff) | plaintiff																																																			2,443
Number of cases of plaintiff's claims (case)																																															27
Number of claimants settled (plaintiff)																																																					308
Number of new claims filed (case) | case																																														6					33
Court of Common Pleas, Philadelphia County
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)																																													1				71
Number of cases of plaintiff's claims (case)																																											2					3		4
Number of claims dismissed (case) | Case																																																		3
Damages maximum amount | $																																										$ 100,000
Number of claimants settled (plaintiff)																																																					1,125
Number of new claims filed (case) | Case																																																		71
Settlement Agreement
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)												1,069
Claims settled amount | $											$ 3,800,000
Percentage of claimants agreed for settlement											93.00%	95.00%
Percentage of claimants agreed for settlement as per settlement agreement											100.00%
Litigation settlement | $												$ 3,600,000
Supreme Court of Kings County New York
Commitments Disclosure [Line Items]
Number of new claims filed (case) | case																																																4
SettlementAgreementVoidable
Commitments Disclosure [Line Items]
Percentage of claimants agreed for settlement as per settlement agreement	93.00%
SettlementAgreementVoid
Commitments Disclosure [Line Items]
Percentage of claimants agreed for settlement as per settlement agreement	70.00%
Settlement Candidates
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)	462																																							1,090
Erie County Firefighter Plaintiffs
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff) | plaintiff		28																										33
Chicago Firefighter Plaintiffs
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)						1,770
Responsive Settlement Candidates
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)																																								717
Lackawanna Firefighter Plaintiffs | Lackawanna County Pennsylvania [Member]
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)																		70
Number of new claims filed (case)																		5
Outside Chicago Firefighter Plaintiffs
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)				10				1,800
Outside Chicago Firefighter Plaintiffs | Circuit Court Of Cook County
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff) | plaintiff																																																			1,800
Outside Chicago Firefighter Plaintiffs | CookCountyandDupageCounty
Commitments Disclosure [Line Items]
Litigation settlement | $	$ 200,000
Pennsylvania Firefighter Plaintiffs | Circuit Court Of Cook County
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff) | plaintiff																																									74					299
Chicago Firefighter Plaintiffs
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)										3																			3	8
Chicago Firefighter Plaintiffs | Maximum
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)																																														40
Chicago Firefighter Plaintiffs | Circuit Court Of Cook County
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)																																														9
Litigation settlement | $																																								$ 700						$ 400,000
Philadelphia Firefighter Plaintiffs | Court of Common Pleas, Philadelphia County
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)		75					55									1				4				7	70		3									20				100				9	9
Number of claims dismissed (case) | case																																				5
Number of new claims filed (case)							4																			2							9			20
District of Columbia Firefighter Plaintiffs | Federal Court, Eastern District of Pennsylvania
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)																									11								193
Number of new claims filed (case) | case																								1
Outside Pennsylvania Firefighter Plaintiffs | Court of Common Pleas, Philadelphia County
Commitments Disclosure [Line Items]
Number of new claims filed (case) | Case																																						2
Pittsburgh Firefighter Plaintiffs | Allegheny County, Pennsylvania
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)																					19										247				8				6
Number of claims dismissed (case)																					55
Number of new claims filed (case)																					2
Pittsburgh Firefighter Plaintiffs | Dismissed | Allegheny County, Pennsylvania
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff) | plaintiff																	2
Pittsburgh Firefighter Plaintiffs | Remaining | Allegheny County, Pennsylvania
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)																	4
Buffalo Firefighter Plaintiffs | Supreme Court of State of New York Erie County
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)									193
Number of new claims filed (case) | case									20
New York City Firefighter Plaintiffs
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)														1	1
New York City Firefighter Plaintiffs | Supreme Court of State of New York, New York County
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)		536																					1														235
Number of new claims filed (case) | Case																																					29
New York Kings County Firefighter Plaintiffs
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)			1
New Jersey Firefighter Plaintiffs
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)		61
Number of new claims filed (case) | Case																																8
New Jersey Firefighter Plaintiffs | Superior Court of New Jersey, Union County
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)																			1			34
Massachusetts Firefighter Plaintiffs
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff) | plaintiff		218																																194
Number of new claims filed (case) | Case																																		9
Erie County Firefighter Plaintiffs | Court of Common Pleas, Philadelphia County
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff)																												61
Florida Firefighters Plaintiffs
Commitments Disclosure [Line Items]
Number of plaintiffs (plaintiff) | $		166
Property Lease Guarantee
Commitments Disclosure [Line Items]
Guarantor obligation, single year maximum cash payments | $																																																				2,600,000
Guarantor obligation, maximum potential cash payments | $																																																				2,600,000
Property Lease Guarantee | Affiliated Entity
Commitments Disclosure [Line Items]
Guarantor obligation, maximum potential cash payments | $																																																				$ 1,600,000

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Earnings Per Share - Reconciliation of Net Income to Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net income	$ 20.5	$ 22.2
Weighted average shares outstanding - Basic (shares)	60.7	60.6
Dilutive effect of common stock equivalents (shares)	0.7	1.1
Weighted average shares outstanding - Diluted (shares)	61.4	61.7
Basic earnings per share:
Earnings per share (usd per share)	$ 0.34	$ 0.37
Diluted earnings per share:
Earnings per share (usd per share)	$ 0.33	$ 0.36

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Earnings Per Share - Additional Information (Details) shares in Millions	3 Months Ended
	Mar. 31, 2022 shares
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the calculation of diluted EPS (shares)	0.2

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Stockholders' Equity - Changes in Each Component of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ (74.2)
Net current-period other comprehensive income (loss)	1.5	$ 0.3
Ending balance	(72.7)
Actuarial Losses
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(67.9)	(88.2)
Other comprehensive income (loss) before reclassifications	0.5	(0.2)
Amounts reclassified from accumulated other comprehensive loss	0.5	0.9
Net current-period other comprehensive income (loss)	1.0	0.7
Ending balance	(66.9)	(87.5)
Prior Service Costs
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(2.4)	(2.6)
Other comprehensive income (loss) before reclassifications	0.0	0.0
Amounts reclassified from accumulated other comprehensive loss	0.0	0.0
Net current-period other comprehensive income (loss)	0.0	0.0
Ending balance	(2.4)	(2.6)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3.4)	1.3
Other comprehensive income (loss) before reclassifications	(1.6)	(1.2)
Amounts reclassified from accumulated other comprehensive loss	0.0	0.0
Net current-period other comprehensive income (loss)	(1.6)	(1.2)
Ending balance	(5.0)	0.1
Interest Rate Swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(0.5)	(2.2)
Other comprehensive income (loss) before reclassifications	1.9	1.0
Amounts reclassified from accumulated other comprehensive loss	0.2	(0.2)
Net current-period other comprehensive income (loss)	2.1	0.8
Ending balance	1.6	(1.4)
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(74.2)	(91.7)
Other comprehensive income (loss) before reclassifications	0.8	(0.4)
Amounts reclassified from accumulated other comprehensive loss	0.7	0.7
Net current-period other comprehensive income (loss)	1.5	0.3
Ending balance	$ (72.7)	$ (91.4)

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Stockholders' Equity - Reclassifications from Accumulated Other Comprehensive Loss (Details) - Amount Reclassified from Accumulated Other Comprehensive Loss - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of actuarial losses of defined benefit pension plans	$ (0.7)	$ (1.2)
Interest rate swaps	(0.2)	0.2
Total before tax	(0.9)	(1.0)
Income tax benefit	0.2	0.3
Total reclassifications for the period, net of tax	$ (0.7)	$ (0.7)

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Stockholders' Equity - Additional Information (Details) - USD ($)	3 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Mar. 31, 2021	Mar. 13, 2020	Nov. 30, 2014
Dividends Payable [Line Items]
Cash dividends declared per common share (usd per share)		$ 0.09	$ 0.09
Cash dividends paid to stockholders		$ 5,500,000	$ 5,500,000
Equity, Class of Treasury Stock [Line Items]
Number of shares repurchased		395,370
Treasury stock purchases		$ 13,600,000	$ 0
Subsequent Event
Dividends Payable [Line Items]
Cash dividends declared per common share (usd per share)	$ 0.09
November 2014 Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount					$ 75,000,000
March 2020 Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount				$ 75,000,000

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Segment Information - Summary of Net Sales, Operating Income (Loss), and Total Assets by Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total net sales	$ 330.2	$ 278.8
Total operating income	28.5	27.8
Interest expense	1.3	1.1
Other income, net	(0.4)	(0.5)
Income before income taxes	27.6	27.2
Total assets	1,425.1		$ 1,366.1
Environmental Solutions
Segment Reporting Information [Line Items]
Total net sales	274.2	228.1
Total operating income	26.8	27.1
Environmental Solutions | Continuing Operations
Segment Reporting Information [Line Items]
Total assets	1,129.6		1,098.2
Safety and Security Systems
Segment Reporting Information [Line Items]
Total net sales	56.0	50.7
Total operating income	7.9	7.2
Safety and Security Systems | Continuing Operations
Segment Reporting Information [Line Items]
Total assets	258.5		226.9
Corporate And Eliminations
Segment Reporting Information [Line Items]
Total operating income	(6.2)	$ (6.5)
Corporate And Eliminations | Continuing Operations
Segment Reporting Information [Line Items]
Total assets	$ 37.0		$ 41.0

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Segment Information - Additional Information (Details)	3 Months Ended
	Mar. 31, 2022 Segment
Segment Reporting Information [Line Items]
Number of reportable segments	2

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Fair Value Measurements - Asset and Liabilities Measured at Fair Value (Details) - Fair Value, Measurements, Recurring $ in Millions	Mar. 31, 2022 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	$ 0.1
Derivative Asset	2.2
Contingent consideration	2.7
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0.1
Derivative Asset	0.0
Contingent consideration	0.0
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0.0
Derivative Asset	2.2
Contingent consideration	0.0
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0.0
Derivative Asset	0.0
Contingent consideration	$ 2.7

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Fair Value Measurements - Roll-Forward of Fair Value of Recurring Level 3 Fair Value Measurements (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration liability	$ 2.7	$ 4.2
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Contingent consideration liability, beginning balance	2.7	4.2
Total losses included in earnings	0.0	0.0
Contingent consideration liability, ending balance	$ 2.7	$ 4.2

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Fair Value Measurements - Additional Information (Details) - Maximum $ in Millions	Mar. 31, 2022 USD ($)
MRL
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ 15.5
Deist
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ 7.5