Federal Signal (FSS) DEFA14A Additional proxy soliciting materials

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

(Rule 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Filed by the Registrantþ
Filed by a Party other than the Registranto
Check the appropriate box:
o	Preliminary Proxy Statement
o	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
o	Definitive Proxy Statement
þ	Definitive Additional Materials
o	Soliciting Material Pursuant to §240.14a-12

FEDERAL SIGNAL CORPORATION

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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On April 6, 2009, Federal Signal Corporation issued a press release in connection with the 2009 annual meeting of stockholders, which is attached hereto as Exhibit 99.1. The press release includes the text of a letter Federal Signal is sending to stockholders, which letter is attached hereto as Exhibit 99.2.