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        <PersonNm>MATTHEW MOORE</PersonNm>
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        <CurrentTaxYearAmt>3619398</CurrentTaxYearAmt>
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        <CurrentTaxYearAmt>34089814</CurrentTaxYearAmt>
        <TotalAmt>156386817</TotalAmt>
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      <PublicSupportCY509Pct>0.97750</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.97620</PublicSupportPY509Pct>
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      <InvestmentIncomePYPct>0.01950</InvestmentIncomePYPct>
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    </IRS990ScheduleA>
    <IRS990ScheduleD documentId="RetDoc1040000001">
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        <ContributionsAmt>825000</ContributionsAmt>
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        <EndYearBalanceAmt>2003388</EndYearBalanceAmt>
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        <EndYearBalanceAmt>1605475</EndYearBalanceAmt>
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        <EndYearBalanceAmt>1012521</EndYearBalanceAmt>
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        <EndYearBalanceAmt>951861</EndYearBalanceAmt>
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      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>0</EndowmentsHeldRelatedOrgInd>
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        <OtherCostOrOtherBasisAmt>446659</OtherCostOrOtherBasisAmt>
        <BookValueAmt>446659</BookValueAmt>
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      <BuildingsGrp>
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        <DepreciationAmt>26903945</DepreciationAmt>
        <BookValueAmt>25606027</BookValueAmt>
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      <LeaseholdImprovementsGrp>
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      <EquipmentGrp>
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      <OtherAssetsOrgGrp>
        <Desc>TEST VEHICLES</Desc>
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      <OtherAssetsOrgGrp>
        <Desc>DUE FROM HIGHWAY LOSS DATA INSTITUTE</Desc>
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      <OtherAssetsOrgGrp>
        <Desc>DEPOSITS</Desc>
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        <Desc>POSTRETIREMENT LIABILITIES</Desc>
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      <OtherLiabilitiesOrgGrp>
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      <FootnoteTextInd>X</FootnoteTextInd>
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      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF DIRECTORS HAS DESIGNATED FUNDS FOR FUTURE REPLACEMENT OF LEASEHOLD IMPROVEMENTS, EQUIPMENT AND MOTOR VEHICLES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INSTITUTE IS EXEMPT UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE (THE CODE) FROM THE PAYMENT OF TAXES ON INCOME OTHER THAN UNRELATED BUSINESS INCOME. NO PROVISION FOR INCOME TAX IS REQUIRED FOR THE YEAR ENDED DECEMBER 31, 2023, AS THE INSTITUTE HAD NO NET UNRELATED BUSINESS INCOME. THE INSTITUTE REQUIRES THAT A TAX POSITION BE RECOGNIZED OR DERECOGNIZED BASED ON A "MORE-LIKELY-THAN-NOT" THRESHOLD. THIS APPLIES TO POSITIONS TAKEN OR EXPECTED TO BE TAKEN IN A TAX RETURN. THE INSTITUTE DOES NOT BELIEVE ITS FINANCIAL STATEMENTS INCLUDE, OR REFLECT, ANY UNCERTAIN TAX POSITIONS. THE INSTITUTE'S IRS FORM 990, RETURN OF ORGANIZATION EXEMPT FROM INCOME TAX, IS SUBJECT TO EXAMINATION BY TAXING AUTHORITIES GENERALLY FOR THREE YEARS AFTER FILING.</ExplanationTxt>
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        <PersonNm>DAVID HARKEY</PersonNm>
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        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>180</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>19995</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>12380</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>239435</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MICHAEL POWELL</PersonNm>
        <TitleTxt>DIRECTOR OF IT</TitleTxt>
        <BaseCompensationFilingOrgAmt>175149</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>6980</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>411</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>19944</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>36606</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>239090</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JESSICA JERMAKIAN</PersonNm>
        <TitleTxt>SR. RESEARCH ENGINEER</TitleTxt>
        <BaseCompensationFilingOrgAmt>191781</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>6823</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>261</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>19493</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>15218</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>233576</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 4B</FormAndLineReferenceDesc>
        <ExplanationTxt>INSURANCE INSTITUTE FOR HIGHWAY SAFETY MAINTAINS TWO NON-QUALIFIED DEFERRED COMPENSATION PLANS. FOR 2023 THE INSURANCE INSTITUTE FOR HIGHWAY SAFETY CONTRIBUTED $42,975 FOR DAVID HARKEY, AND $1,713 FOR DAVID ZUBY.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF DIRECTORS DID NOT REVIEW THE FORM 990. HOWEVER, THEY DID APPROVE THE FINANCIAL STATEMENT AUDIT. THE TREASURER REVIEWS THE FORM 990 BEFORE IT IS FILED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INSURANCE INSTITUTE FOR HIGHWAY SAFETY HAS A WRITTEN CONFLICT OF INTEREST POLICY FOR ITS EMPLOYEES AND THE BOARD OF DIRECTORS. THE BOARD OF DIRECTORS COMPLETED AN ANNUAL SURVEY THAT MONITORED AND ENFORCED COMPLIANCE WITH THE CONFLICT OF INTEREST POLICY AND IDENTIFIED ANY FAMILY AND BUSINESS RELATIONSHIPS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>UNDER THE INSTITUTE'S BYLAWS, THE EXECUTIVE COMMITTEE HAS THE AUTHORITY TO SET COMPENSATION FOR OFFICERS OF THE INSTITUTE. THE EXECUTIVE COMMITTEE OF THE BOARD OF DIRECTORS MET IN DECEMBER 2022 TO REVIEW THE OFFICER'S COMPENSATION FOR CALENDAR YEAR 2023. THE COMMITTEE REVIEWED EACH OFFICER'S PERFORMANCE, COMPENSATION HISTORY AND COMPARABILITY DATA ON OFFICER COMPENSATION REPORTED ON FORM 990 FOR SEVERAL NON-PROFIT ORGANIZATIONS THAT HAVE COMMUNICATIONS AND RESEARCH RESPONSIBILITIES SIMILAR TO THE INSTITUTE AND ON MOTOR VEHICLE RELATED ORGANIZATIONS THAT WORK ON HIGHWAY AND VEHICLE SAFETY ISSUES. IN ADDITION, THE COMMITTEE MEMBERS DREW UPON THEIR KNOWLEDGE OF COMPENSATION WITHIN THEIR OWN COMPANIES, THE INSURANCE INDUSTRY IN GENERAL AND NATIONAL TRENDS IN COMPENSATION. THE DECISION ON COMPENSATION WAS MADE SOLELY BY THE COMMITTEE, WHICH CONSISTS OF INDIVIDUALS THAT ARE NOT SUBJECT TO THE CONTROL OF THE INSTITUTE'S OFFICERS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 18</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INSTITUTE'S FORM 990 IS AVAILABLE UPON WRITTEN REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INSTITUTE'S DOCUMENTS ARE AVAILABLE UPON WRITTEN REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>POSTRETIREMENT BENEFIT PLAN ACTUARIAL LOSS NOT YET RECOGNIZED IS: -779,994.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>HIGHWAY LOSS DATA INSTITUTE</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>4121 WILSON BLVD 6TH FLOOR</AddressLine1Txt>
          <CityNm>ARLINGTON</CityNm>
          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>22203</ZIPCd>
        </USAddress>
        <EIN>520964200</EIN>
        <PrimaryActivitiesTxt>PERFORMS SCIENTIFIC STUDIES OF INSURANCE CLAIMS DATA AND PUBLISHES FINDINGS</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>509(A)(2)</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>1</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>1</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>1</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>