    <SEC-DOCUMENT>0000277509-23-000021-index.html : 20230310
    <SEC-HEADER>0000277509-23-000021.hdr.sgml : 20230310
    <ACCEPTANCE-DATETIME>20230310164657
    ACCESSION NUMBER:		0000277509-23-000021
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		7
    FILED AS OF DATE:		20230310
    DATE AS OF CHANGE:		20230310

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			FEDERAL SIGNAL CORP /DE/
    		CENTRAL INDEX KEY:			0000277509
    		STANDARD INDUSTRIAL CLASSIFICATION:	MOTOR VEHICLES & PASSENGER CAR BODIES [3711]
    		IRS NUMBER:				361063330
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-06003
    		FILM NUMBER:		23724364

    	BUSINESS ADDRESS:
    		STREET 1:		1415 WEST 22ND STREET
    		STREET 2:		SUITE 1100
    		CITY:			OAK BROOK
    		STATE:			IL
    		ZIP:			60523
    		BUSINESS PHONE:		630-954-2000

    	MAIL ADDRESS:
    		STREET 1:		1415 WEST 22ND STREET
    		STREET 2:		SUITE 1100
    		CITY:			OAK BROOK
    		STATE:			IL
    		ZIP:			60523

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	FEDERAL SIGN & SIGNAL CORP /DE/
    		DATE OF NAME CHANGE:	19600201
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>fss2023stockholderlettera.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: fss2023stockholderlettera.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>fss2023stockholderletter.htm
    <DESCRIPTION>STOCKHOLDER LETTER
    <TEXT>
    Document 2 - file: fss2023stockholderletter.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>fss2023stockholderletter001.jpg
    <DESCRIPTION>PAGE 1
    <TEXT>
    Document 3 - file: fss2023stockholderletter001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>fss2023stockholderletter002.jpg
    <DESCRIPTION>PAGE 2
    <TEXT>
    Document 4 - file: fss2023stockholderletter002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>fss2023stockholderletter003.jpg
    <DESCRIPTION>PAGE 3
    <TEXT>
    Document 5 - file: fss2023stockholderletter003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>fss2023stockholderletter004.jpg
    <DESCRIPTION>PAGE 4
    <TEXT>
    Document 6 - file: fss2023stockholderletter004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>fsslogo_covera19.jpg
    <DESCRIPTION>FSS LOGO
    <TEXT>
    Document 7 - file: fsslogo_covera19.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>