    <SEC-DOCUMENT>0000277509-24-000014-index.html : 20240308
    <SEC-HEADER>0000277509-24-000014.hdr.sgml : 20240308
    <ACCEPTANCE-DATETIME>20240308161310
    ACCESSION NUMBER:		0000277509-24-000014
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		32
    CONFORMED PERIOD OF REPORT:	20240308
    FILED AS OF DATE:		20240308
    DATE AS OF CHANGE:		20240308

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			FEDERAL SIGNAL CORP /DE/
    		CENTRAL INDEX KEY:			0000277509
    		STANDARD INDUSTRIAL CLASSIFICATION:	MOTOR VEHICLES & PASSENGER CAR BODIES [3711]
    		ORGANIZATION NAME:           	04 Manufacturing
    		IRS NUMBER:				361063330
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-06003
    		FILM NUMBER:		24734496

    	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>DEF 14A
    <SEQUENCE>1
    <FILENAME>ffs-20240308.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: ffs-20240308.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>2
    <FILENAME>ffs-20240308.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 2 - file: ffs-20240308.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>3
    <FILENAME>ffs-20240308_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
    <TEXT>
    Document 3 - file: ffs-20240308_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>4
    <FILENAME>ffs-20240308_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 4 - file: ffs-20240308_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>5
    <FILENAME>ffs-20240308_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: ffs-20240308_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>ffs-20240308_g1.jpg
    <DESCRIPTION>FSS LOGO
    <TEXT>
    Document 6 - file: ffs-20240308_g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>ffs-20240308_g10.jpg
    <DESCRIPTION>FSSBOD_REICHELDERFER
    <TEXT>
    Document 7 - file: ffs-20240308_g10.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>ffs-20240308_g11.jpg
    <DESCRIPTION>FSSBOD_SHERMAN
    <TEXT>
    Document 8 - file: ffs-20240308_g11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>ffs-20240308_g12.jpg
    <DESCRIPTION>FSSBOD_WORKMAN
    <TEXT>
    Document 9 - file: ffs-20240308_g12.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>ffs-20240308_g13.jpg
    <DESCRIPTION>CHART_MEASURE OF PERFORMANCE
    <TEXT>
    Document 10 - file: ffs-20240308_g13.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>ffs-20240308_g14.jpg
    <DESCRIPTION>CHART_MIX OF PAY
    <TEXT>
    Document 11 - file: ffs-20240308_g14.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>ffs-20240308_g15.jpg
    <DESCRIPTION>CHART_PERFORMANCEVS.PAY1
    <TEXT>
    Document 12 - file: ffs-20240308_g15.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>ffs-20240308_g16.jpg
    <DESCRIPTION>CHART_PERFORMANCEVS.PAY2
    <TEXT>
    Document 13 - file: ffs-20240308_g16.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>ffs-20240308_g17.jpg
    <DESCRIPTION>FSS LOGO WITH TAGLINE
    <TEXT>
    Document 14 - file: ffs-20240308_g17.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>ffs-20240308_g2.jpg
    <DESCRIPTION>FSS LOGO WITH TAGLINE
    <TEXT>
    Document 15 - file: ffs-20240308_g2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>ffs-20240308_g3.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: ffs-20240308_g3.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>ffs-20240308_g4.jpg
    <DESCRIPTION>CHART_NET SALES AND ADJUSTED EBITDA
    <TEXT>
    Document 17 - file: ffs-20240308_g4.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>ffs-20240308_g5.jpg
    <DESCRIPTION>FSSBOD_HELMKAMP
    <TEXT>
    Document 18 - file: ffs-20240308_g5.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>ffs-20240308_g6.jpg
    <DESCRIPTION>FSSBOD_LOWE
    <TEXT>
    Document 19 - file: ffs-20240308_g6.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>ffs-20240308_g7.jpg
    <DESCRIPTION>FSSBOD_MARTIN
    <TEXT>
    Document 20 - file: ffs-20240308_g7.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>ffs-20240308_g8.jpg
    <DESCRIPTION>FSSBOD_OWENS
    <TEXT>
    Document 21 - file: ffs-20240308_g8.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>ffs-20240308_g9.jpg
    <DESCRIPTION>FSSBOD_PATEL
    <TEXT>
    Document 22 - file: ffs-20240308_g9.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>23
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 23 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>24
    <FILENAME>R2.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 24 - file: R2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>26
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 26 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>27
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 27 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>29
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 29 - file: FilingSummary.html

    Document 29 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>31
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 31 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>32
    <FILENAME>0000277509-24-000014-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 32 - file: 0000277509-24-000014-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>33
    <FILENAME>ffs-20240308_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 33 - file: ffs-20240308_htm.html

    Document 33 - RAW XML: ffs-20240308_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>