Note 17. Net Income Attributable to Trinity Industries, Inc. Per Common Share

Basic net income attributable to Trinity Industries, Inc. per common share is computed by dividing net income attributable to Trinity remaining after allocation to unvested restricted shares by the weighted average number of common shares outstanding for the period. Except when the effect would be antidilutive, the calculation of diluted net income attributable to Trinity per common share includes the net impact of unvested restricted shares and shares that could be issued under outstanding stock options. Total weighted average restricted shares and antidilutive stock options were 3.0 million shares for the three and six month periods ended June 30, 2011, respectively. Total weighted average restricted shares and antidilutive stock options were 2.8 million shares and 2.7 million shares for the three and six month periods ended June 30, 2010, respectively.

The computation of basic and diluted net income attributable to Trinity Industries, Inc. is as follows:


	Three Months Ended							Three Months Ended
	June 30, 2011							June 30, 2010
				(in millions, except per share amounts)
	Income			Average				Income			Average
	(Loss)			Shares		EPS		(Loss)			Shares		EPS
Net income attributable to Trinity Industries, Inc.	$	30.0						$	18.4
Unvested restricted share participation		(1.0	)						(0.6	)

Net income attributable to Trinity Industries, Inc. — basic		29.0			77.4	$	0.37		17.8			76.7	$	0.23

Effect of dilutive securities:
Stock options		—			0.3				—			0.2

Net income attributable to Trinity Industries, Inc. — diluted	$	29.0			77.7	$	0.37	$	17.8			76.9	$	0.23


	Six Months Ended							Six Months Ended
	June 30, 2011							June 30, 2010
				(in millions, except per share amounts)
	Income			Average				Income			Average
	(Loss)			Shares		EPS		(Loss)			Shares		EPS
Net income attributable to Trinity Industries, Inc.	$	54.2						$	20.4
Unvested restricted share participation		(1.9	)						(0.7	)

Net income attributable to Trinity Industries, Inc. — basic		52.3			77.2	$	0.68		19.7			76.6	$	0.26

Effect of dilutive securities:
Stock options		—			0.3				—			0.1

Net income attributable to Trinity Industries, Inc. — diluted	$	52.3			77.5	$	0.67	$	19.7			76.7	$	0.26