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    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001584756</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000277509</issuerCik>
      <issuerName>FEDERAL SIGNAL CORP /DE/</issuerName>
      <secFileNumber>001-06003</secFileNumber>
      <issuerAddress>
        <com:street1>1415 WEST 22ND STREET</com:street1>
        <com:street2>SUITE 1100</com:street2>
        <com:city>OAK BROOK</com:city>
        <com:stateOrCountry>IL</com:stateOrCountry>
        <com:zipCode>60523</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>630-954-2000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Hudson Ian A.</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Non-Qualified Stock Option</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>TDAmeritrade</name>
        <address>
          <com:street1>540 W. 22nd Street</com:street1>
          <com:city>Oak Brook</com:city>
          <com:stateOrCountry>IL</com:stateOrCountry>
          <com:zipCode>60523</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>46173</noOfUnitsSold>
      <aggregateMarketValue>2463791.28</aggregateMarketValue>
      <noOfUnitsOutstanding>76267</noOfUnitsOutstanding>
      <approxSaleDate>05/04/2023</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesInformation>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Computershare</name>
        <address>
          <com:street1>PO Box 43078</com:street1>
          <com:city>Providence</com:city>
          <com:stateOrCountry>RI</com:stateOrCountry>
          <com:zipCode>02940-3078</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>15000</noOfUnitsSold>
      <aggregateMarketValue>800400.00</aggregateMarketValue>
      <noOfUnitsOutstanding>79412</noOfUnitsOutstanding>
      <approxSaleDate>05/04/2023</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Non-Qualified Stock Option</securitiesClassTitle>
      <acquiredDate>05/10/2017</acquiredDate>
      <natureOfAcquisitionTransaction>Grant</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Federal Signal</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2796</amountOfSecuritiesAcquired>
      <paymentDate>05/04/2023</paymentDate>
      <natureOfPayment>Stock Option Exercise (i)</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Non-Qualified Stock Option</securitiesClassTitle>
      <acquiredDate>05/10/2018</acquiredDate>
      <natureOfAcquisitionTransaction>Grant</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Federal Signal</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>9878</amountOfSecuritiesAcquired>
      <paymentDate>05/04/2023</paymentDate>
      <natureOfPayment>Stock Option Exercise (i)</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Non-Qualified Stock Option</securitiesClassTitle>
      <acquiredDate>05/06/2019</acquiredDate>
      <natureOfAcquisitionTransaction>Grant</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Federal Signal</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>15478</amountOfSecuritiesAcquired>
      <paymentDate>05/04/2023</paymentDate>
      <natureOfPayment>Stock Option Exercise (i)</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Non-Qualified Stock Option</securitiesClassTitle>
      <acquiredDate>05/08/2020</acquiredDate>
      <natureOfAcquisitionTransaction>Grant</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Federal Signal</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>18021</amountOfSecuritiesAcquired>
      <paymentDate>05/04/2023</paymentDate>
      <natureOfPayment>Stock Option Exercise (i)</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>03/03/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Grant</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Federal Signal</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>7890</amountOfSecuritiesAcquired>
      <paymentDate>03/03/2021</paymentDate>
      <natureOfPayment>Award Grant</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>03/01/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Grant</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Federal Signal</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>8138</amountOfSecuritiesAcquired>
      <paymentDate>03/01/2023</paymentDate>
      <natureOfPayment>Award Grant</natureOfPayment>
    </securitiesToBeSold>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>05/10/2021</acquiredDate>
      <natureOfAcquisitionTransaction>Grant</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Federal Signal</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2566</amountOfSecuritiesAcquired>
      <paymentDate>05/10/2021</paymentDate>
      <natureOfPayment>Award Grant</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>(i) These shares relate to stock options that have not yet expired. Mr. Hudson intends to exercise and sell the options granted by the Issuer prior to the options' applicable expiration dates.</remarks>
    <noticeSignature>
      <noticeDate>05/03/2023</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>04/28/2015</planAdoptionDate>
      </planAdoptionDates>
      <signature>Diane Bonina</signature>
    </noticeSignature>
  </formData>
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144
0001584756
XXXXXXXX
LIVE
0000277509
FEDERAL SIGNAL CORP /DE/
001-06003
1415 WEST 22ND STREET
SUITE 1100
OAK BROOK
IL
60523
630-954-2000
Hudson Ian A.
Officer
Non-Qualified Stock Option
TDAmeritrade
540 W. 22nd Street
Oak Brook
IL
60523
46173
2463791.28
76267
05/04/2023
NYSE
Common Stock
Computershare
PO Box 43078
Providence
RI
02940-3078
15000
800400.00
79412
05/04/2023
NYSE
Non-Qualified Stock Option
05/10/2017
Grant
Federal Signal
N
2796
05/04/2023
Stock Option Exercise (i)
Non-Qualified Stock Option
05/10/2018
Grant
Federal Signal
N
9878
05/04/2023
Stock Option Exercise (i)
Non-Qualified Stock Option
05/06/2019
Grant
Federal Signal
N
15478
05/04/2023
Stock Option Exercise (i)
Non-Qualified Stock Option
05/08/2020
Grant
Federal Signal
N
18021
05/04/2023
Stock Option Exercise (i)
Common Stock
03/03/2021
Grant
Federal Signal
N
7890
03/03/2021
Award Grant
Common Stock
03/01/2023
Grant
Federal Signal
N
8138
03/01/2023
Award Grant
Common Stock
05/10/2021
Grant
Federal Signal
N
2566
05/10/2021
Award Grant
Y
(i) These shares relate to stock options that have not yet expired. Mr. Hudson intends to exercise and sell the options granted by the Issuer prior to the options' applicable expiration dates.
05/03/2023
04/28/2015
Diane Bonina