Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We hereby consent to the incorporation by reference of our report dated June 28, 2006 relating to our audit of the consolidated financial statements and financial statement schedule appearing in this Annual Report on Form 10-K of Iteris, Inc. for the year ended March 31, 2006 in the previously filed Registration Statement of Iteris, Inc. on Form S-3 (File No. 333-121942) and on Form S-8 (File Nos. 333-126834, 333-75728, 333-05735, 333-44907 and 333-30396).

/s/ McGladrey & Pullen, LLP

Irvine, California

June 29, 2006