<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.federalsignal.com/20181231" xmlns:fss="http://www.federalsignal.com/20181231" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import namespace="http://fasb.org/srt/2018-01-31" schemaLocation="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-gaap/2018-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2018-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2018/elts/us-roles-2018-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2018-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2018/elts/us-types-2018-01-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2017-01-31" schemaLocation="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2017-01-31" schemaLocation="http://xbrl.sec.gov/currency/2017/currency-2017-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2018-01-31" schemaLocation="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2018-01-31" schemaLocation="https://xbrl.sec.gov/exch/2018/exch-2018-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/naics/2017-01-31" schemaLocation="http://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2018-01-31" schemaLocation="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="fss-20181231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="fss-20181231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="fss-20181231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="fss-20181231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="Acquisitions" roleURI="http://www.federalsignal.com/role/Acquisitions">
        <link:definition>2104100 - Disclosure - Acquisitions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsJjeAcquisitionDetails" roleURI="http://www.federalsignal.com/role/AcquisitionsJjeAcquisitionDetails">
        <link:definition>2404404 - Disclosure - Acquisitions - JJE acquisition (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsNarrativeDetails" roleURI="http://www.federalsignal.com/role/AcquisitionsNarrativeDetails">
        <link:definition>2404405 - Disclosure - Acquisitions - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsTables" roleURI="http://www.federalsignal.com/role/AcquisitionsTables">
        <link:definition>2304301 - Disclosure - Acquisitions (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsTbeiAcquisitionDetails" roleURI="http://www.federalsignal.com/role/AcquisitionsTbeiAcquisitionDetails">
        <link:definition>2404402 - Disclosure - Acquisitions - TBEI acquisition (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsTbeiProFormaDetails" roleURI="http://www.federalsignal.com/role/AcquisitionsTbeiProFormaDetails">
        <link:definition>2404403 - Disclosure - Acquisitions - TBEI Pro Forma (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingencies" roleURI="http://www.federalsignal.com/role/CommitmentsAndContingencies">
        <link:definition>2142100 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesAdditionalInformationDetails" roleURI="http://www.federalsignal.com/role/CommitmentsAndContingenciesAdditionalInformationDetails">
        <link:definition>2442403 - Disclosure - Commitments and Contingencies - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesChangesInCompanysWarrantyLiabilitiesDetails" roleURI="http://www.federalsignal.com/role/CommitmentsAndContingenciesChangesInCompanysWarrantyLiabilitiesDetails">
        <link:definition>2442402 - Disclosure - Commitments and Contingencies - Changes in Company's Warranty Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesTables" roleURI="http://www.federalsignal.com/role/CommitmentsAndContingenciesTables">
        <link:definition>2342301 - Disclosure - Commitments and Contingencies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://www.federalsignal.com/role/ConsolidatedBalanceSheets">
        <link:definition>1003000 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParenthetical" roleURI="http://www.federalsignal.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>1003501 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfCashFlows" roleURI="http://www.federalsignal.com/role/ConsolidatedStatementsOfCashFlows">
        <link:definition>1004000 - Statement - Consolidated Statements Of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfComprehensiveIncome" roleURI="http://www.federalsignal.com/role/ConsolidatedStatementsOfComprehensiveIncome">
        <link:definition>1002000 - Statement - Consolidated Statements Of Comprehensive Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfComprehensiveIncomeParenthetical" roleURI="http://www.federalsignal.com/role/ConsolidatedStatementsOfComprehensiveIncomeParenthetical">
        <link:definition>1002501 - Statement - Consolidated Statements Of Comprehensive Income (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfOperations" roleURI="http://www.federalsignal.com/role/ConsolidatedStatementsOfOperations">
        <link:definition>1001000 - Statement - Consolidated Statements Of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfOperationsParenthetical" roleURI="http://www.federalsignal.com/role/ConsolidatedStatementsOfOperationsParenthetical">
        <link:definition>1001501 - Statement - Consolidated Statements Of Operations (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfStockholdersEquity" roleURI="http://www.federalsignal.com/role/ConsolidatedStatementsOfStockholdersEquity">
        <link:definition>1005000 - Statement - Consolidated Statements Of Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfStockholdersEquityParenthetical" roleURI="http://www.federalsignal.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical">
        <link:definition>1005001 - Statement - Consolidated Statements Of Stockholders' Equity (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Debt" roleURI="http://www.federalsignal.com/role/Debt">
        <link:definition>2131100 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtAdditionalInformationDetails" roleURI="http://www.federalsignal.com/role/DebtAdditionalInformationDetails">
        <link:definition>2431404 - Disclosure - Debt - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtSummaryOfCarryingAmountAndFairValueOfFinancialInstrumentsDetails" roleURI="http://www.federalsignal.com/role/DebtSummaryOfCarryingAmountAndFairValueOfFinancialInstrumentsDetails">
        <link:definition>2431403 - Disclosure - Debt - Summary of Carrying Amount and Fair Value of Financial Instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtSummaryOfComponentsOfLongTermBorrowingsAndCapitalLeaseObligationsDetails" roleURI="http://www.federalsignal.com/role/DebtSummaryOfComponentsOfLongTermBorrowingsAndCapitalLeaseObligationsDetails">
        <link:definition>2431402 - Disclosure - Debt - Summary of Components of Long-Term Borrowings and Capital Lease Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtTables" roleURI="http://www.federalsignal.com/role/DebtTables">
        <link:definition>2331301 - Disclosure - Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperations" roleURI="http://www.federalsignal.com/role/DiscontinuedOperations">
        <link:definition>2159100 - Disclosure - Discontinued Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperationsAdditionalInformationDetails" roleURI="http://www.federalsignal.com/role/DiscontinuedOperationsAdditionalInformationDetails">
        <link:definition>2459404 - Disclosure - Discontinued Operations - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperationsAssetsAndLiabilitiesOfDiscontinuedOperationsDetails" roleURI="http://www.federalsignal.com/role/DiscontinuedOperationsAssetsAndLiabilitiesOfDiscontinuedOperationsDetails">
        <link:definition>2459403 - Disclosure - Discontinued Operations - Assets and Liabilities of Discontinued Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperationsOperatingResultsOfDiscontinuedOperationsDetails" roleURI="http://www.federalsignal.com/role/DiscontinuedOperationsOperatingResultsOfDiscontinuedOperationsDetails">
        <link:definition>2459402 - Disclosure - Discontinued Operations - Operating Results of Discontinued Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperationsTables" roleURI="http://www.federalsignal.com/role/DiscontinuedOperationsTables">
        <link:definition>2359301 - Disclosure - Discontinued Operations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DocumentAndEntityInformation" roleURI="http://www.federalsignal.com/role/DocumentAndEntityInformation">
        <link:definition>0001000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsLossPerShareTables" roleURI="http://www.federalsignal.com/role/EarningsLossPerShareTables">
        <link:definition>2347301 - Disclosure - Earnings (Loss) Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShare" roleURI="http://www.federalsignal.com/role/EarningsPerShare">
        <link:definition>2147100 - Disclosure - Earnings Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareAdditionalInformationDetails" roleURI="http://www.federalsignal.com/role/EarningsPerShareAdditionalInformationDetails">
        <link:definition>2447403 - Disclosure - Earnings Per Share - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsPerShareComputationOfEarningsLossPerCommonShareDetails" roleURI="http://www.federalsignal.com/role/EarningsPerShareComputationOfEarningsLossPerCommonShareDetails">
        <link:definition>2447402 - Disclosure - Earnings Per Share - Computation of Earnings (Loss) Per Common Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurements" roleURI="http://www.federalsignal.com/role/FairValueMeasurements">
        <link:definition>2158100 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsAssetsAndLiabilitiesAtFairValueDetails" roleURI="http://www.federalsignal.com/role/FairValueMeasurementsAssetsAndLiabilitiesAtFairValueDetails">
        <link:definition>2458403 - Disclosure - Fair Value Measurements - Assets and Liabilities at Fair Value (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsNarrativeDetails" roleURI="http://www.federalsignal.com/role/FairValueMeasurementsNarrativeDetails">
        <link:definition>2458402 - Disclosure - Fair Value Measurements - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsTables" roleURI="http://www.federalsignal.com/role/FairValueMeasurementsTables">
        <link:definition>2358301 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsUnobservableInputReconciliationDetails" roleURI="http://www.federalsignal.com/role/FairValueMeasurementsUnobservableInputReconciliationDetails">
        <link:definition>2458404 - Disclosure - Fair Value Measurements - Unobservable Input Reconciliation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Goodwill" roleURI="http://www.federalsignal.com/role/Goodwill">
        <link:definition>2120100 - Disclosure - Goodwill</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillChangesInCarryingAmountOfDefiniteLivedIntangibleAssetsExcludingGoodwillDetails" roleURI="http://www.federalsignal.com/role/GoodwillChangesInCarryingAmountOfDefiniteLivedIntangibleAssetsExcludingGoodwillDetails">
        <link:definition>2420403 - Disclosure - Goodwill - Changes in Carrying Amount of Definite-Lived Intangible Assets Excluding Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillChangesInCarryingAmountOfGoodwillDetails" roleURI="http://www.federalsignal.com/role/GoodwillChangesInCarryingAmountOfGoodwillDetails">
        <link:definition>2420402 - Disclosure - Goodwill - Changes in Carrying Amount of Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillChangesInCarryingAmountOfIndefiniteLivedIntangibleAssetsExcludingGoodwillDetails" roleURI="http://www.federalsignal.com/role/GoodwillChangesInCarryingAmountOfIndefiniteLivedIntangibleAssetsExcludingGoodwillDetails">
        <link:definition>2420404 - Disclosure - Goodwill - Changes in Carrying Amount of Indefinite-Lived Intangible Assets Excluding Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillTables" roleURI="http://www.federalsignal.com/role/GoodwillTables">
        <link:definition>2320301 - Disclosure - Goodwill (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.federalsignal.com/role/IncomeTaxes">
        <link:definition>2137100 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesAdditionalInformationDetails" roleURI="http://www.federalsignal.com/role/IncomeTaxesAdditionalInformationDetails">
        <link:definition>2437407 - Disclosure - Income Taxes - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesComponentsOfProvisionBenefitForIncomeTaxesDetails" roleURI="http://www.federalsignal.com/role/IncomeTaxesComponentsOfProvisionBenefitForIncomeTaxesDetails">
        <link:definition>2437402 - Disclosure - Income Taxes - Components of Provision (Benefit) for Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDeferredIncomeTaxAssetsAndLiabilitiesDetails" roleURI="http://www.federalsignal.com/role/IncomeTaxesDeferredIncomeTaxAssetsAndLiabilitiesDetails">
        <link:definition>2437405 - Disclosure - Income Taxes - Deferred Income Tax Assets and Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDifferencesBetweenStatutoryFederalIncomeTaxRateAndEffectiveIncomeTaxRateDetails" roleURI="http://www.federalsignal.com/role/IncomeTaxesDifferencesBetweenStatutoryFederalIncomeTaxRateAndEffectiveIncomeTaxRateDetails">
        <link:definition>2437403 - Disclosure - Income Taxes - Differences between Statutory Federal Income Tax Rate and Effective Income Tax Rate (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesIncomeLossFromContinuingOperationsBeforeTaxesDetails" roleURI="http://www.federalsignal.com/role/IncomeTaxesIncomeLossFromContinuingOperationsBeforeTaxesDetails">
        <link:definition>2437404 - Disclosure - Income Taxes - Income (Loss) from Continuing Operations before Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesSummaryOfActivitiesRelatedToUnrecognizedTaxBenefitsDetails" roleURI="http://www.federalsignal.com/role/IncomeTaxesSummaryOfActivitiesRelatedToUnrecognizedTaxBenefitsDetails">
        <link:definition>2437406 - Disclosure - Income Taxes - Summary of Activities Related to Unrecognized Tax Benefits (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://www.federalsignal.com/role/IncomeTaxesTables">
        <link:definition>2337301 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Inventories" roleURI="http://www.federalsignal.com/role/Inventories">
        <link:definition>2105100 - Disclosure - Inventories</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesDetails" roleURI="http://www.federalsignal.com/role/InventoriesDetails">
        <link:definition>2405402 - Disclosure - Inventories (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesTables" roleURI="http://www.federalsignal.com/role/InventoriesTables">
        <link:definition>2305301 - Disclosure - Inventories (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LegalProceedings" roleURI="http://www.federalsignal.com/role/LegalProceedings">
        <link:definition>2144100 - Disclosure - Legal Proceedings</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LegalProceedingsAdditionalInformationDetails" roleURI="http://www.federalsignal.com/role/LegalProceedingsAdditionalInformationDetails">
        <link:definition>2444401 - Disclosure - Legal Proceedings - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NewAccountingPronouncementsIssuedButNotYetAdopted" roleURI="http://www.federalsignal.com/role/NewAccountingPronouncementsIssuedButNotYetAdopted">
        <link:definition>2160100 - Disclosure - New Accounting Pronouncements (Issued But Not Yet Adopted)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NewAccountingPronouncementsIssuedButNotYetAdoptedDetails" roleURI="http://www.federalsignal.com/role/NewAccountingPronouncementsIssuedButNotYetAdoptedDetails">
        <link:definition>2460401 - Disclosure - New Accounting Pronouncements (Issued But Not Yet Adopted) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Pensions" roleURI="http://www.federalsignal.com/role/Pensions">
        <link:definition>2139100 - Disclosure - Pensions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsAdditionalInformationDetails" roleURI="http://www.federalsignal.com/role/PensionsAdditionalInformationDetails">
        <link:definition>2439412 - Disclosure - Pensions - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsMultiEmployerPensionPlansDetails" roleURI="http://www.federalsignal.com/role/PensionsMultiEmployerPensionPlansDetails">
        <link:definition>2439411 - Disclosure - Pensions - Multi-Employer Pension Plans (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsScheduleOfAmountsRecognizedInConsolidatedBalanceSheetDetails" roleURI="http://www.federalsignal.com/role/PensionsScheduleOfAmountsRecognizedInConsolidatedBalanceSheetDetails">
        <link:definition>2439409 - Disclosure - Pensions - Schedule of Amounts Recognized in Consolidated Balance Sheet (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsScheduleOfExpectedBenefitPaymentsDetails" roleURI="http://www.federalsignal.com/role/PensionsScheduleOfExpectedBenefitPaymentsDetails">
        <link:definition>2439410 - Disclosure - Pensions - Schedule of Expected Benefit Payments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsScheduleOfNetPeriodicPensionExpenseDetails" roleURI="http://www.federalsignal.com/role/PensionsScheduleOfNetPeriodicPensionExpenseDetails">
        <link:definition>2439402 - Disclosure - Pensions - Schedule of Net Periodic Pension Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsSummaryOfChangeInPlanAssetsDetails" roleURI="http://www.federalsignal.com/role/PensionsSummaryOfChangeInPlanAssetsDetails">
        <link:definition>2439406 - Disclosure - Pensions - Summary of Change in Plan Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsSummaryOfChangesInProjectedBenefitObligationDetails" roleURI="http://www.federalsignal.com/role/PensionsSummaryOfChangesInProjectedBenefitObligationDetails">
        <link:definition>2439404 - Disclosure - Pensions - Summary of Changes in Projected Benefit Obligation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsSummaryOfFundedStatusDetails" roleURI="http://www.federalsignal.com/role/PensionsSummaryOfFundedStatusDetails">
        <link:definition>2439408 - Disclosure - Pensions - Summary of Funded Status (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsSummaryOfPensionAssetsInThreeTierFairValueHierarchyForBenefitPlanDetails" roleURI="http://www.federalsignal.com/role/PensionsSummaryOfPensionAssetsInThreeTierFairValueHierarchyForBenefitPlanDetails">
        <link:definition>2439407 - Disclosure - Pensions - Summary of Pension Assets in Three-Tier Fair Value Hierarchy for Benefit Plan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsSummaryOfWeightedAverageActuarialAssumptionsDetails" roleURI="http://www.federalsignal.com/role/PensionsSummaryOfWeightedAverageActuarialAssumptionsDetails">
        <link:definition>2439403 - Disclosure - Pensions - Summary of Weighted-Average Actuarial Assumptions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsSummaryOfWeightedAverageAssumptionsUsedInDeterminingBenefitObligationsDetails" roleURI="http://www.federalsignal.com/role/PensionsSummaryOfWeightedAverageAssumptionsUsedInDeterminingBenefitObligationsDetails">
        <link:definition>2439405 - Disclosure - Pensions - Summary of Weighted-Average Assumptions Used in Determining Benefit Obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PensionsTables" roleURI="http://www.federalsignal.com/role/PensionsTables">
        <link:definition>2339301 - Disclosure - Pensions (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertiesAndEquipmentAdditionalInformationDetails" roleURI="http://www.federalsignal.com/role/PropertiesAndEquipmentAdditionalInformationDetails">
        <link:definition>2412403 - Disclosure - Properties and Equipment - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertiesAndEquipmentNet" roleURI="http://www.federalsignal.com/role/PropertiesAndEquipmentNet">
        <link:definition>2112100 - Disclosure - Properties and Equipment, Net</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertiesAndEquipmentSummaryOfPropertiesAndEquipmentDetails" roleURI="http://www.federalsignal.com/role/PropertiesAndEquipmentSummaryOfPropertiesAndEquipmentDetails">
        <link:definition>2412402 - Disclosure - Properties and Equipment - Summary of Properties and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertiesAndEquipmentTables" roleURI="http://www.federalsignal.com/role/PropertiesAndEquipmentTables">
        <link:definition>2312301 - Disclosure - Properties and Equipment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RentalEquipment" roleURI="http://www.federalsignal.com/role/RentalEquipment">
        <link:definition>2116100 - Disclosure - Rental Equipment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RentalEquipmentDetails" roleURI="http://www.federalsignal.com/role/RentalEquipmentDetails">
        <link:definition>2416402 - Disclosure - Rental Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RentalEquipmentTables" roleURI="http://www.federalsignal.com/role/RentalEquipmentTables">
        <link:definition>2316301 - Disclosure - Rental Equipment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Restructuring" roleURI="http://www.federalsignal.com/role/Restructuring">
        <link:definition>2157100 - Disclosure - Restructuring</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestructuringDetails" roleURI="http://www.federalsignal.com/role/RestructuringDetails">
        <link:definition>2457402 - Disclosure - Restructuring (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestructuringTables" roleURI="http://www.federalsignal.com/role/RestructuringTables">
        <link:definition>2357301 - Disclosure - Restructuring (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognition" roleURI="http://www.federalsignal.com/role/RevenueRecognition">
        <link:definition>2102100 - Disclosure - Revenue Recognition</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionAdditionalInformationDetails" roleURI="http://www.federalsignal.com/role/RevenueRecognitionAdditionalInformationDetails">
        <link:definition>2402405 - Disclosure - Revenue Recognition - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionContractLiabilitiesDetails" roleURI="http://www.federalsignal.com/role/RevenueRecognitionContractLiabilitiesDetails">
        <link:definition>2402404 - Disclosure - Revenue Recognition - Contract Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionDisaggregationOfRevenueFromContractsWithCustomersDetails" roleURI="http://www.federalsignal.com/role/RevenueRecognitionDisaggregationOfRevenueFromContractsWithCustomersDetails">
        <link:definition>2402403 - Disclosure - Revenue Recognition - Disaggregation of Revenue From Contracts With Customers (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionImpactOfAdoptionOfTopic606Details" roleURI="http://www.federalsignal.com/role/RevenueRecognitionImpactOfAdoptionOfTopic606Details">
        <link:definition>2402402 - Disclosure - Revenue Recognition - Impact of Adoption of Topic 606 (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRecognitionTables" roleURI="http://www.federalsignal.com/role/RevenueRecognitionTables">
        <link:definition>2302301 - Disclosure - Revenue Recognition (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ScheduleIiValuationAndQualifyingAccounts" roleURI="http://www.federalsignal.com/role/ScheduleIiValuationAndQualifyingAccounts">
        <link:definition>2163100 - Disclosure - SCHEDULE II - Valuation and Qualifying Accounts</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ScheduleIiValuationAndQualifyingAccountsDetail" roleURI="http://www.federalsignal.com/role/ScheduleIiValuationAndQualifyingAccountsDetail">
        <link:definition>2463401 - Disclosure - SCHEDULE II - Valuation and Qualifying Accounts (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformation" roleURI="http://www.federalsignal.com/role/SegmentInformation">
        <link:definition>2153100 - Disclosure - Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationAdditionalInformationDetails" roleURI="http://www.federalsignal.com/role/SegmentInformationAdditionalInformationDetails">
        <link:definition>2453404 - Disclosure - Segment Information - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationSegmentInformationClassifiedBasedOnGeographicLocationDetails" roleURI="http://www.federalsignal.com/role/SegmentInformationSegmentInformationClassifiedBasedOnGeographicLocationDetails">
        <link:definition>2453403 - Disclosure - Segment Information - Segment Information Classified Based on Geographic Location (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationSummaryOfContinuingOperationsBySegmentDetails" roleURI="http://www.federalsignal.com/role/SegmentInformationSummaryOfContinuingOperationsBySegmentDetails">
        <link:definition>2453402 - Disclosure - Segment Information - Summary of Continuing Operations by Segment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationTables" roleURI="http://www.federalsignal.com/role/SegmentInformationTables">
        <link:definition>2353301 - Disclosure - Segment Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SelectedQuarterlyDataSummaryOfQuarterlyResultsOfOperationsDetails" roleURI="http://www.federalsignal.com/role/SelectedQuarterlyDataSummaryOfQuarterlyResultsOfOperationsDetails">
        <link:definition>2462402 - Disclosure - Selected Quarterly Data - Summary of Quarterly Results of Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SelectedQuarterlyDataTables" roleURI="http://www.federalsignal.com/role/SelectedQuarterlyDataTables">
        <link:definition>2362301 - Disclosure - Selected Quarterly Data (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SelectedQuarterlyDataUnaudited" roleURI="http://www.federalsignal.com/role/SelectedQuarterlyDataUnaudited">
        <link:definition>2162100 - Disclosure - Selected Quarterly Data (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SignificantAccountingPoliciesAdditionalInformationDetails" roleURI="http://www.federalsignal.com/role/SignificantAccountingPoliciesAdditionalInformationDetails">
        <link:definition>2401403 - Disclosure - Significant Accounting Policies - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensation" roleURI="http://www.federalsignal.com/role/StockBasedCompensation">
        <link:definition>2151100 - Disclosure - Stock-Based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationAdditionalInformationDetails" roleURI="http://www.federalsignal.com/role/StockBasedCompensationAdditionalInformationDetails">
        <link:definition>2451406 - Disclosure - Stock-Based Compensation - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationAssumptionsUsedToEstimateFairValueDetails" roleURI="http://www.federalsignal.com/role/StockBasedCompensationAssumptionsUsedToEstimateFairValueDetails">
        <link:definition>2451402 - Disclosure - Stock-Based Compensation - Assumptions Used to Estimate Fair Value (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationStockOptionActivityDetails" roleURI="http://www.federalsignal.com/role/StockBasedCompensationStockOptionActivityDetails">
        <link:definition>2451403 - Disclosure - Stock-Based Compensation - Stock Option Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationSummaryOfRestrictedStockGrantsAndPsusDetails" roleURI="http://www.federalsignal.com/role/StockBasedCompensationSummaryOfRestrictedStockGrantsAndPsusDetails">
        <link:definition>2451405 - Disclosure - Stock-Based Compensation - Summary of Restricted Stock Grants and PSUs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationSummaryOfStockOptionsOutstandingDetails" roleURI="http://www.federalsignal.com/role/StockBasedCompensationSummaryOfStockOptionsOutstandingDetails">
        <link:definition>2451404 - Disclosure - Stock-Based Compensation - Summary of Stock Options Outstanding (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationTables" roleURI="http://www.federalsignal.com/role/StockBasedCompensationTables">
        <link:definition>2351301 - Disclosure - Stock-Based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquity" roleURI="http://www.federalsignal.com/role/StockholdersEquity">
        <link:definition>2152100 - Disclosure - Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityAdditionalInformationDetails" roleURI="http://www.federalsignal.com/role/StockholdersEquityAdditionalInformationDetails">
        <link:definition>2452404 - Disclosure - Stockholders' Equity - Additional Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityChangeInAccumulatedOtherComprehensiveLossDetails" roleURI="http://www.federalsignal.com/role/StockholdersEquityChangeInAccumulatedOtherComprehensiveLossDetails">
        <link:definition>2452402 - Disclosure - Stockholders' Equity - Change in Accumulated Other Comprehensive Loss (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityReclassificationsFromAccumulatedOtherComprehensiveLossDetails" roleURI="http://www.federalsignal.com/role/StockholdersEquityReclassificationsFromAccumulatedOtherComprehensiveLossDetails">
        <link:definition>2452403 - Disclosure - Stockholders' Equity - Reclassifications from Accumulated Other Comprehensive Loss (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityTables" roleURI="http://www.federalsignal.com/role/StockholdersEquityTables">
        <link:definition>2352301 - Disclosure - Stockholders' Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPolicies" roleURI="http://www.federalsignal.com/role/SummaryOfSignificantAccountingPolicies">
        <link:definition>2101100 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPolicies" roleURI="http://www.federalsignal.com/role/SummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>2201201 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesTables" roleURI="http://www.federalsignal.com/role/SummaryOfSignificantAccountingPoliciesTables">
        <link:definition>2301302 - Disclosure - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element abstract="true" id="fss_A2013CreditAgreementMember" name="A2013CreditAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_A2016CreditAgreementMember" name="A2016CreditAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_AccountingStandardsUpdate201802Member" name="AccountingStandardsUpdate201802Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_AcquisitionDeferredPayment" name="AcquisitionDeferredPayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="fss_Acquisitionandintegrationrelatedexpenses" name="Acquisitionandintegrationrelatedexpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="fss_Acquisitioncontingentearnout" name="Acquisitioncontingentearnout" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_AcquisitionsAbstract" name="AcquisitionsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_AcquisitionsJJEacquisitionAbstract" name="AcquisitionsJJEacquisitionAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_AcquisitionsNarrativeAbstract" name="AcquisitionsNarrativeAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_AlleghenyCountyPennsylvaniaMember" name="AlleghenyCountyPennsylvaniaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_Amended2016CreditAgreementMember" name="Amended2016CreditAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_AssetsNoncurrentExcludingIntangibleAssets" name="AssetsNoncurrentExcludingIntangibleAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="fss_BuffaloFirefighterPlaintiffsMember" name="BuffaloFirefighterPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_BusinessAcquisitionPurchasePriceAdjustment" name="BusinessAcquisitionPurchasePriceAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="fss_BusinessCombinationAcquisitionRelatedCostsAccretionOfDebtDiscountonDeferredPayment" name="BusinessCombinationAcquisitionRelatedCostsAccretionOfDebtDiscountonDeferredPayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="fss_BusinessCombinationConsiderationTransferredContingentConsiderationAndDeferredPayment" name="BusinessCombinationConsiderationTransferredContingentConsiderationAndDeferredPayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="fss_BusinessCombinationNoncashSettlementOfAccountsReceivable" name="BusinessCombinationNoncashSettlementOfAccountsReceivable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="fss_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCustomerRelationships" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCustomerRelationships" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="fss_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssets" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherIntangibleAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="fss_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTradeNames" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTradeNames" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="fss_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedAccruedLiabilities" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedAccruedLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="fss_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCustomerDeposits" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCustomerDeposits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="fss_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedPropertyPlantandEquipmentExcludingPropertySubjecttoorAvailableforOperatingLeaseNet" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedPropertyPlantandEquipmentExcludingPropertySubjecttoorAvailableforOperatingLeaseNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="fss_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedPropertySubjecttoorAvailableforOperatingLeaseNet" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedPropertySubjecttoorAvailableforOperatingLeaseNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="fss_Cashcollectedfromprovidedtocustomers" name="Cashcollectedfromprovidedtocustomers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="fss_ChangesInFairValueOfContingentConsiderationAndDeferredPayment" name="ChangesInFairValueOfContingentConsiderationAndDeferredPayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ChicagoFirefighterPlaintiffsMember" name="ChicagoFirefighterPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_CircuitCourtOfCookCountyMember" name="CircuitCourtOfCookCountyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_CommitmentsDisclosureLineItems" name="CommitmentsDisclosureLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_CommitmentsDisclosureTable" name="CommitmentsDisclosureTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_CourtOfCommonPleasPhiladelphiaCountyMember" name="CourtOfCommonPleasPhiladelphiaCountyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_CourtSettlementAxis" name="CourtSettlementAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_CourtSettlementDomain" name="CourtSettlementDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_CreditFacilityCovenantsOtherIncrementalCashPaymentsPermitted" name="CreditFacilityCovenantsOtherIncrementalCashPaymentsPermitted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="fss_CreditFacilityCovenantsPermittedDividendPayments" name="CreditFacilityCovenantsPermittedDividendPayments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_CurrentDeferredTaxAssetsMember" name="CurrentDeferredTaxAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_DebtInstrumentRepaymentPeriodAxis" name="DebtInstrumentRepaymentPeriodAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_DebtInstrumentRepaymentPeriodDomain" name="DebtInstrumentRepaymentPeriodDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_DebtSettlementCosts" name="DebtSettlementCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="fss_DeferredIncomeTaxExpenseBenefitContinuingOperations" name="DeferredIncomeTaxExpenseBenefitContinuingOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_DeferredPaymentMember" name="DeferredPaymentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_DeferredTaxAssetsNetOperatingLossAndTaxCreditCarryforwards" name="DeferredTaxAssetsNetOperatingLossAndTaxCreditCarryforwards" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="fss_DeferredTaxAssetsOperatingLossCarryforwardsExpirationYear" name="DeferredTaxAssetsOperatingLossCarryforwardsExpirationYear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:gYearItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_DeferredTaxLiabilitiesTaxDeferredExpenseCompensationandBenefitsPensions" name="DeferredTaxLiabilitiesTaxDeferredExpenseCompensationandBenefitsPensions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="fss_DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpenseNet" name="DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpenseNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_DistrictofColumbiaFirefighterPlaintiffsMember" name="DistrictofColumbiaFirefighterPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_DocumentDocumentAndEntityInformationAbstract" name="DocumentDocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_EINPensionPlanNumber" name="EINPensionPlanNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_EarnOutPaymentMember" name="EarnOutPaymentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_EffectiveIncomeTaxRateReconciliationTaxPlanningPercent" name="EffectiveIncomeTaxRateReconciliationTaxPlanningPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_EffectiveIncomeTaxRateReconciliationTaxReserves" name="EffectiveIncomeTaxRateReconciliationTaxReserves" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_EnvironmentalSolutionsMember" name="EnvironmentalSolutionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_EquitySecuritiesEmergingMarketsMember" name="EquitySecuritiesEmergingMarketsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ErieCountyFirefighterPlaintiffsMember" name="ErieCountyFirefighterPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_EuropeOtherMember" name="EuropeOtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ExercisePricesRangeFourMember" name="ExercisePricesRangeFourMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ExercisePricesRangeOneMember" name="ExercisePricesRangeOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ExercisePricesRangeThreeMember" name="ExercisePricesRangeThreeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ExercisePricesRangeTwoMember" name="ExercisePricesRangeTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ExportsFromUSToOtherRegionsMember" name="ExportsFromUSToOtherRegionsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_FairValueHierarchyOfPlanAssetsByCategoryLineItems" name="FairValueHierarchyOfPlanAssetsByCategoryLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_FairValueHierarchyOfPlanAssetsByCategoryTable" name="FairValueHierarchyOfPlanAssetsByCategoryTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_FairValueMeasurementsAbstract" name="FairValueMeasurementsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_FairValueMeasurementwithUnobservableInputsReconciliationsRecurringBasisForeignCurrencyAdjustment" name="FairValueMeasurementwithUnobservableInputsReconciliationsRecurringBasisForeignCurrencyAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_FederalCourtEasternDistrictofPennsylvaniaMember" name="FederalCourtEasternDistrictofPennsylvaniaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_Feescommissionsandotherexpensepaidfromplanassets" name="Feescommissionsandotherexpensepaidfromplanassets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_FireRescueMember" name="FireRescueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_FloridaFirefightersPlaintiffsMember" name="FloridaFirefightersPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ForeignEquitySecuritiesMember" name="ForeignEquitySecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ForeignTaxCreditCarryforwardMember" name="ForeignTaxCreditCarryforwardMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_GuaranteeObligationsMaximumExposurePercentageofOutstandingVotingCapitalStock" name="GuaranteeObligationsMaximumExposurePercentageofOutstandingVotingCapitalStock" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_GuarantorObligationsMaximumExposureUndiscountedAnnualAmount" name="GuarantorObligationsMaximumExposureUndiscountedAnnualAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="fss_IAMNationalPensionFundDomain" name="IAMNationalPensionFundDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_IncomeTaxLineItems" name="IncomeTaxLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_IncomeTaxTable" name="IncomeTaxTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_IncreaseDecreaseinRentalEquipment" name="IncreaseDecreaseinRentalEquipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="fss_IncreaseInTaxExpenseAttributableToChangeInStateTaxRateInIllinois" name="IncreaseInTaxExpenseAttributableToChangeInStateTaxRateInIllinois" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_IndustrialsignalingequipmentMember" name="IndustrialsignalingequipmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_IngenieriaYServiciosOrbitecSPAMember" name="IngenieriaYServiciosOrbitecSPAMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_InterestRateSwapFairValueDisclosure" name="InterestRateSwapFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="fss_JoeJohnsonEquipmentMember" name="JoeJohnsonEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_LackawannaCountyPennsylvaniaMember" name="LackawannaCountyPennsylvaniaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_LackawannaFirefighterPlaintiffsMember" name="LackawannaFirefighterPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_LatvianCommercialDisputeMember" name="LatvianCommercialDisputeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_LesseeLeasingArrangementsOperatingLeasesNumberofUnits" name="LesseeLeasingArrangementsOperatingLeasesNumberofUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="fss_LineOfCreditFacilityCovenantTermsLeverageRatioMaximum" name="LineOfCreditFacilityCovenantTermsLeverageRatioMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element id="fss_LineofCreditFacilityMaximumBorrowingCapacityAvailableIncrement" name="LineofCreditFacilityMaximumBorrowingCapacityAvailableIncrement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="fss_LitigationSettlementPercentageofLegalFeesExcluded" name="LitigationSettlementPercentageofLegalFeesExcluded" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_LitigationSettlementPercentofLegalFees" name="LitigationSettlementPercentofLegalFees" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_LitigationSettlementPercentofSettlementCosts" name="LitigationSettlementPercentofSettlementCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_LossContingencyClaimsSettledAmount" name="LossContingencyClaimsSettledAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="fss_LossContingencyNumberOfPlaintiffsDismissed" name="LossContingencyNumberOfPlaintiffsDismissed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_LossContingencyNumberofCasesScheduled" name="LossContingencyNumberofCasesScheduled" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_MassachusettsFirefighterPlaintiffsMember" name="MassachusettsFirefighterPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_MultiEmployerRetirementPlansAbstract" name="MultiEmployerRetirementPlansAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_NewJerseyFirefighterPlaintiffsMemberDomain" name="NewJerseyFirefighterPlaintiffsMemberDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_NewYorkCityFirefighterPlaintiffsMember" name="NewYorkCityFirefighterPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_NewYorkKingsCountyFirefighterPlaintiffsMember" name="NewYorkKingsCountyFirefighterPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_NonUsLinesOfCreditMember" name="NonUsLinesOfCreditMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_November2014RepurchaseProgramMember" name="November2014RepurchaseProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_NumberOfFirefightersConsideredAsPartOfTheSettlement" name="NumberOfFirefightersConsideredAsPartOfTheSettlement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_NumberOfIndividualsElectedLumpSumSettlement" name="NumberOfIndividualsElectedLumpSumSettlement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_OtherDisposalGroupsMember" name="OtherDisposalGroupsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_OtherMember" name="OtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_OutsideChicagoFirefighterPlaintiffsMember" name="OutsideChicagoFirefighterPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_OutsidePennsylvaniaFirefighterPlaintiffsMember" name="OutsidePennsylvaniaFirefighterPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_PartsMember" name="PartsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_PearlandTexasFacilityMember" name="PearlandTexasFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_PennsylvaniaFirefighterPlaintiffsMember" name="PennsylvaniaFirefighterPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_PensionContributionsNetofPensionExpense" name="PensionContributionsNetofPensionExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="fss_PercentChangeinNetSalesDuetoAdoptionofTopic606" name="PercentChangeinNetSalesDuetoAdoptionofTopic606" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_PercentageOfClaimantsAgreedForSettlement" name="PercentageOfClaimantsAgreedForSettlement" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="fss_PercentageOfClaimantsAgreedForSettlementAsPerSettlementAgreement" name="PercentageOfClaimantsAgreedForSettlementAsPerSettlementAgreement" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="fss_PerformancebasedRestrictedStockUnits2016GrantsMember" name="PerformancebasedRestrictedStockUnits2016GrantsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_PerformancebasedRestrictedStockUnits2017GrantsMember" name="PerformancebasedRestrictedStockUnits2017GrantsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_PerformancebasedRestrictedStockUnits2018GrantsMember" name="PerformancebasedRestrictedStockUnits2018GrantsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_PhiladelphiaFirefighterPlaintiffsMember" name="PhiladelphiaFirefighterPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_PittsburghFirefighterPlaintiffsMember" name="PittsburghFirefighterPlaintiffsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_PlaintiffsAxis" name="PlaintiffsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_PlaintiffsDomain" name="PlaintiffsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_ProductLiabilityAndWorkersCompensationPolicyTextBlock" name="ProductLiabilityAndWorkersCompensationPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_PropertyPlantandEquipmentNumberofUnitsSold" name="PropertyPlantandEquipmentNumberofUnitsSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_PublicsafetyandsecurityequipmentMember" name="PublicsafetyandsecurityequipmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_PurchaseAccountingExpense" name="PurchaseAccountingExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="fss_PurchasePriceFundedUnderRevolvingCreditFacility" name="PurchasePriceFundedUnderRevolvingCreditFacility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="fss_Purchasepriceinclusiveofadjustmentforworkingcapitalandotherpostclosingitems" name="Purchasepriceinclusiveofadjustmentforworkingcapitalandotherpostclosingitems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_RentalEquipmentAbstract" name="RentalEquipmentAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_RentalEquipmentTextBlock" name="RentalEquipmentTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_RentalincomeMember" name="RentalincomeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ResponsiveSettlementCandidatesDomain" name="ResponsiveSettlementCandidatesDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_SafetyAndSecuritySystemsMember" name="SafetyAndSecuritySystemsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_SaleLeasebackTransactionLeasePeriod" name="SaleLeasebackTransactionLeasePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ScheduleOfEarningsPerShareTable" name="ScheduleOfEarningsPerShareTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ScheduleOfNetPeriodicBenefitCostsWeightedAverageAssumptionsLineItems" name="ScheduleOfNetPeriodicBenefitCostsWeightedAverageAssumptionsLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ScheduleOfNetPeriodicBenefitCostsWeightedAverageAssumptionsTable" name="ScheduleOfNetPeriodicBenefitCostsWeightedAverageAssumptionsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingByExercisePriceLineItems" name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingByExercisePriceLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingByExercisePriceTable" name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingByExercisePriceTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_SettlementAgreementMember" name="SettlementAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_SettlementOfferPerEligiblePlaintiffWhoHasAlreadyFiledALawsuit" name="SettlementOfferPerEligiblePlaintiffWhoHasAlreadyFiledALawsuit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="fss_SettlementOfferPerEligiblePlaintiffWhoHasNotAlreadyFiledALawsuit" name="SettlementOfferPerEligiblePlaintiffWhoHasNotAlreadyFiledALawsuit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="fss_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsExpectedtoVestOutstandingNumber" name="SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsExpectedtoVestOutstandingNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="fss_SheetMetalWorkersNationalPensionFundDomain" name="SheetMetalWorkersNationalPensionFundDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_SignificantOfAccountingPoliciesLineItems" name="SignificantOfAccountingPoliciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_SignificantOfAccountingPoliciesTable" name="SignificantOfAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_SpainTaxPlanningStrategyBenefit" name="SpainTaxPlanningStrategyBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="fss_StockIssuedDuringPeriodValuePerformanceShareUnitsNetOfSharesPaidForTaxes" name="StockIssuedDuringPeriodValuePerformanceShareUnitsNetOfSharesPaidForTaxes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="fss_StockIssuedDuringPeriodValueStockOptionExercisesAndOther" name="StockIssuedDuringPeriodValueStockOptionExercisesAndOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_SuperiorCourtofNewJerseyUnionCountyMember" name="SuperiorCourtofNewJerseyUnionCountyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_SupremeCourtofKingsCountyNewYorkMember" name="SupremeCourtofKingsCountyNewYorkMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_SupremeCourtofStateofNewYorkErieCountyMember" name="SupremeCourtofStateofNewYorkErieCountyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_SupremeCourtofStateofNewYorkNewYorkCountyMember" name="SupremeCourtofStateofNewYorkNewYorkCountyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_TBEIMember" name="TBEIMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_TBEIProFormaAbstract" name="TBEIProFormaAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_TaxActTransitionTaxRateAppliedtoCash" name="TaxActTransitionTaxRateAppliedtoCash" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="fss_TaxActTransitionTaxRateAppliedtoEarningsinExcessofCash" name="TaxActTransitionTaxRateAppliedtoEarningsinExcessofCash" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="fss_TaxCreditCarryforwardExpirationYear" name="TaxCreditCarryforwardExpirationYear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:gYearItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_TaxCutsandJobsActof2017AccountingProvisionalIncomeTaxExpenseBenefit" name="TaxCutsandJobsActof2017AccountingProvisionalIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_UnitedStatesLargeCapEquitySecuritiesMember" name="UnitedStatesLargeCapEquitySecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_UnitedStatesSmallMidCapEquitySecuritiesMember" name="UnitedStatesSmallMidCapEquitySecuritiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_VehiclesandequipmentMember" name="VehiclesandequipmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_VoluntaryReductionInForcePlanMember" name="VoluntaryReductionInForcePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="fss_WarningsystemsMember" name="WarningsystemsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="fss_WarrantyMaturityPeriods" name="WarrantyMaturityPeriods" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
</xsd:schema>
