﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2023v5.1">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-11-07T12:45:59-06:00</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>420714325</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>RSM US LLP</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>7351 OFFICE PARK PLACE</AddressLine1Txt>
        <CityNm>MELBOURNE</CityNm>
        <StateAbbreviationCd>FL</StateAbbreviationCd>
        <ZIPCd>329408229</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>522344655</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>RAILROAD RESEARCH FOUNDATION</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>RAIL</BusinessNameControlTxt>
      <PhoneNum>2026392118</PhoneNum>
      <USAddress>
        <AddressLine1Txt>425 THIRD STREET SW 910</AddressLine1Txt>
        <CityNm>WASHINGTON</CityNm>
        <StateAbbreviationCd>DC</StateAbbreviationCd>
        <ZIPCd>20024</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>PAUL HEDRICK</PersonNm>
      <PersonTitleTxt>VP &amp; TREASURER</PersonTitleTxt>
      <PhoneNum>2026392118</PhoneNum>
      <SignatureDt>2024-11-06</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>0</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>KELLI PECK</PreparerPersonNm>
      <PTIN>P01423033</PTIN>
      <PhoneNum>3217516200</PhoneNum>
      <PreparationDt>2024-11-06</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2024-10-15 13:58:12Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="7">
    <IRS990 documentId="RetDoc1038000001" referenceDocumentId="RetDoc1044400001">
      <FinalReturnInd>X</FinalReturnInd>
      <PrincipalOfficerNm>IAN JEFFERIES</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>425 THIRD STREET SW 910</AddressLine1Txt>
        <CityNm>WASHINGTON</CityNm>
        <StateAbbreviationCd>DC</StateAbbreviationCd>
        <ZIPCd>20024</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>887191</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>0</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>N/A</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1999</FormationYr>
      <LegalDomicileStateCd>DE</LegalDomicileStateCd>
      <ActivityOrMissionDesc>THE RAILROAD RESEARCH FOUNDATION IS A PUBLIC CHARITY FORMED TO CONDUCT RAILROAD RELATED RESEARCH.</ActivityOrMissionDesc>
      <ContractTerminationInd>X</ContractTerminationInd>
      <VotingMembersGoverningBodyCnt>6</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>1</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <TotalVolunteersCnt>1</TotalVolunteersCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>0</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>0</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>0</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>842677</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>887191</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>0</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>0</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>0</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>0</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>842677</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>887191</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>0</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>4606</CYGrantsAndSimilarPaidAmt>
      <PYBenefitsPaidToMembersAmt>0</PYBenefitsPaidToMembersAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>0</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>0</CYSalariesCompEmpBnftPaidAmt>
      <PYTotalProfFndrsngExpnsAmt>0</PYTotalProfFndrsngExpnsAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>843886</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>892577</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>843886</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>897183</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>-1209</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>-9992</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>20100</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>0</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>10108</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>0</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>9992</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>0</NetAssetsOrFundBalancesEOYAmt>
      <MissionDesc>THE RAILROAD RESEARCH FOUNDATION IS A PUBLIC CHARITY FORMED TO CONDUCT RAILROAD RELATED RESEARCH.</MissionDesc>
      <SignificantNewProgramSrvcInd>0</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>0</SignificantChangeInd>
      <ExpenseAmt>851059</ExpenseAmt>
      <GrantAmt>4606</GrantAmt>
      <RevenueAmt>887191</RevenueAmt>
      <Desc>RCRMS LICENSE ACTIVITIES:GOVERNED BY LICENSING AGREEMENTS BETWEEN THE FOUNDATION AND THE SEVEN (7) CLASS I AND FOUR(4) SHORTLINE RAILROADS, THE RCRMS FREIGHT RAILROAD RISK ASSESSMENT TOOL IS RECOGNIZED AS A KEY ENABLING TECHNOLOGY FOR THE RAILROAD INDUSTRY TO ASSIST IN ACCOMPLISHING THE RISK EVALUATION OBJECTIVES FOR COMPLIANCE TO THE RAIL SAFETY IMPROVEMENT ACT OF 2008. THE FOUNDATION PROVIDES APPLICATION AND USER HOSTING, TECHNICAL SUPPORT CAPABILITIES AND DATA INTEGRATION.</Desc>
      <TotalProgramServiceExpensesAmt>851059</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="RetDoc1039100001">1</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd>0</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>0</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="RetDoc1040000001">0</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="RetDoc1040000001">0</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="RetDoc1040000001">0</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="RetDoc1040000001">0</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd>0</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="RetDoc1040000001">0</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="RetDoc1040000001">0</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="RetDoc1040000001">0</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="RetDoc1040000001">0</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="RetDoc1040000001">0</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="RetDoc1040000001">1</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">0</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">1</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <ForeignActivitiesInd>0</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>0</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>0</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>0</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>0</FundraisingActivitiesInd>
      <GamingActivitiesInd>0</GamingActivitiesInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <GrantsToOrganizationsInd>0</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>0</GrantsToIndividualsInd>
      <ScheduleJRequiredInd referenceDocumentId="RetDoc1042400001">1</ScheduleJRequiredInd>
      <TaxExemptBondsInd>0</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>0</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>0</PYExcessBenefitTransInd>
      <LoanOutstandingInd>0</LoanOutstandingInd>
      <GrantToRelatedPersonInd>0</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>0</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>0</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>0</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd>0</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>0</DeductibleArtContributionInd>
      <TerminateOperationsInd referenceDocumentId="RetDoc1043100001">1</TerminateOperationsInd>
      <PartialLiquidationInd referenceDocumentId="RetDoc1043100001">0</PartialLiquidationInd>
      <DisregardedEntityInd referenceDocumentId="RetDoc1043400001">0</DisregardedEntityInd>
      <RelatedEntityInd referenceDocumentId="RetDoc1043400001">1</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd referenceDocumentId="RetDoc1043400001">0</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd referenceDocumentId="RetDoc1043400001">0</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>1</ScheduleORequiredInd>
      <IRPDocumentCnt>0</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <EmployeeCnt>0</EmployeeCnt>
      <UnrelatedBusIncmOverLimitInd>0</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>0</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>0</NondeductibleContributionsInd>
      <QuidProQuoContributionsInd>0</QuidProQuoContributionsInd>
      <Form8282PropertyDisposedOfInd>0</Form8282PropertyDisposedOfInd>
      <RcvFndsToPayPrsnlBnftCntrctInd>0</RcvFndsToPayPrsnlBnftCntrctInd>
      <PayPremiumsPrsnlBnftCntrctInd>0</PayPremiumsPrsnlBnftCntrctInd>
      <IndoorTanningServicesInd>0</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>0</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>0</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>6</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>1</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>0</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>0</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>1</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>0</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>0</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>0</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>0</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>1</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>0</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>0</OfficerMailingAddressInd>
      <LocalChaptersInd>0</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>0</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>1</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>1</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>1</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>1</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>1</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>0</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>0</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>0</InvestmentInJointVentureInd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <BusinessName>
          <BusinessNameLine1Txt>PAUL HEDRICK</BusinessNameLine1Txt>
        </BusinessName>
        <PhoneNum>2026392118</PhoneNum>
        <USAddress>
          <AddressLine1Txt>425 THIRD STREET SW 910</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20024</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <Form990PartVIISectionAGrp>
        <PersonNm>IAN JEFFERIES</PersonNm>
        <TitleTxt>PRESIDENT &amp; DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>39.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>2515035</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>82445</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL J RUSH</PersonNm>
        <TitleTxt>VP &amp; DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>4.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>36.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>538526</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>71046</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PAUL HEDRICK</PersonNm>
        <TitleTxt>VP, TREASURER &amp; DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>4.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>36.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>545813</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>68388</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KRISTIN SMITH</PersonNm>
        <TitleTxt>VP &amp; DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>39.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>474799</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>75254</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOHN T GRAY</PersonNm>
        <TitleTxt>VP &amp; DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>39.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>553531</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>59149</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LOUIS S THOMPSON</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KATHRYN D KIRMAYER</PersonNm>
        <TitleTxt>VP &amp; GENERAL COUNSEL</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>39.00</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>703703</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>57985</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>EDWARD A KENDALL JR</PersonNm>
        <TitleTxt>CORPORATE SECRETARY</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>39.00</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>267001</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>54807</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JEFFREY MOLLER</PersonNm>
        <TitleTxt>AVP-TRANSPORTATION</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>39.00</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>261884</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>63772</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MARK BORCHERDING</PersonNm>
        <TitleTxt>CONTROLLER (THRU 03-22-2023)</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>39.00</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>65161</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>5744</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>0</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>5925453</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>538590</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>0</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>FACTOR INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>210 25TH AVE NO SUITE 910</AddressLine1Txt>
            <CityNm>NASHVILLE</CityNm>
            <StateAbbreviationCd>TN</StateAbbreviationCd>
            <ZIPCd>37203</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>RCRMS HOSTING</ServicesDesc>
        <CompensationAmt>846453</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>1</CntrctRcvdGreaterThan100KCnt>
      <ProgramServiceRevenueGrp>
        <Desc>RCRMS LICENSE FEES</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>887191</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>887191</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>887191</TotalProgramServiceRevenueAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>887191</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>887191</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>4606</TotalAmt>
        <ProgramServicesAmt>4606</ProgramServicesAmt>
      </GrantsToDomesticOrgsGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>13028</TotalAmt>
        <ManagementAndGeneralAmt>13028</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>27500</TotalAmt>
        <ManagementAndGeneralAmt>27500</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>846453</TotalAmt>
        <ProgramServicesAmt>846453</ProgramServicesAmt>
      </FeesForServicesOtherGrp>
      <OfficeExpensesGrp>
        <TotalAmt>5596</TotalAmt>
        <ManagementAndGeneralAmt>5596</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>897183</TotalAmt>
        <ProgramServicesAmt>851059</ProgramServicesAmt>
        <ManagementAndGeneralAmt>46124</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>20100</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </CashNonInterestBearingGrp>
      <TotalAssetsGrp>
        <BOYAmt>20100</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>10108</BOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>10108</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>9992</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>9992</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>20100</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>-9992</ReconcilationRevenueExpnssAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>1</AccountantCompileOrReviewInd>
      <AcctCompileOrReviewBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </AcctCompileOrReviewBasisGrp>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <ConsolidatedBasisFinclStmtInd>X</ConsolidatedBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <SupportingOrganization509a3Ind>X</SupportingOrganization509a3Ind>
      <SupportingOrgType2Ind>X</SupportingOrgType2Ind>
      <SupportedOrganizationsCnt>1</SupportedOrganizationsCnt>
      <SupportedOrgInformationGrp>
        <SupportedOrganizationName>
          <BusinessNameLine1Txt>ASSOCIATION OF AMERICAN RAILROADS</BusinessNameLine1Txt>
        </SupportedOrganizationName>
        <EIN>536000125</EIN>
        <OrganizationTypeCd>10</OrganizationTypeCd>
        <GoverningDocumentListedInd>0</GoverningDocumentListedInd>
        <SupportAmt>0</SupportAmt>
        <OtherSupportAmt>0</OtherSupportAmt>
      </SupportedOrgInformationGrp>
      <SupportedOrganizationsTotalCnt>1</SupportedOrganizationsTotalCnt>
      <SupportSumAmt>0</SupportSumAmt>
      <OtherSupportSumAmt>0</OtherSupportSumAmt>
      <Form990SchASupportingOrgGrp>
        <ListedByNameGoverningDocInd>0</ListedByNameGoverningDocInd>
        <SuprtOrgNoIRSDeterminationInd>0</SuprtOrgNoIRSDeterminationInd>
        <SupportedOrgSectionC456Ind>1</SupportedOrgSectionC456Ind>
        <SupportedOrgQualifiedInd>1</SupportedOrgQualifiedInd>
        <SuprtExclusivelySec170c2BInd>1</SuprtExclusivelySec170c2BInd>
        <SupportedOrgNotOrganizedUSInd>0</SupportedOrgNotOrganizedUSInd>
        <OrganizationChangeSuprtOrgInd>0</OrganizationChangeSuprtOrgInd>
        <SupportNonSupportedOrgInd>1</SupportNonSupportedOrgInd>
        <PaymentSubstantialContribtrInd>0</PaymentSubstantialContribtrInd>
        <LoanDisqualifiedPersonInd>0</LoanDisqualifiedPersonInd>
        <ControlledDisqualifiedPrsnInd>0</ControlledDisqualifiedPrsnInd>
        <DisqualifiedPrsnControllIntInd>0</DisqualifiedPrsnControllIntInd>
        <DisqualifiedPrsnOwnrIntInd>0</DisqualifiedPrsnOwnrIntInd>
        <ExcessBusinessHoldingsRulesInd>0</ExcessBusinessHoldingsRulesInd>
        <ContributionControllerInd>0</ContributionControllerInd>
        <ContributionFamilyInd>0</ContributionFamilyInd>
        <Contribution35ControlledInd>0</Contribution35ControlledInd>
      </Form990SchASupportingOrgGrp>
      <MajorityDirTrstSupportedOrgInd>1</MajorityDirTrstSupportedOrgInd>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART IV, SECTION A, LINE 1</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION IS IN THE PROCESS OF REVISING ITS GOVERNING DOCUMENTS TO PROPERLY REFLECT THE SUPPORTED ORGANIZATION BY NAME. THE ORGANIZATION AND ITS SUPPORTED ORGANIZATION HAVE A HISTORIC AND CONTINUING RELATIONSHIP.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART I, LINE 12G, COLUMN IV:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION WAS IN THE PROCESS OF REVISING ITS GOVERNING DOCUMENTS TO PROPERLY REFLECT THE SUPPORTED ORGANIZATION BY NAME. THE ORGANIZATION AND ITS SUPPORTED ORGANIZATION HAVE A HISTORIC AND CONTINUING RELATIONSHIP. EFFECTIVE DECEMBER 27, 2023, RAILROAD RESEARCH FOUNDATION (RRF) WAS DISSOLVED AS A 501(C)(3) CORPORATION IN THE STATE OF DELAWARE.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART IV, SECTION A, LINE 3B:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AAR, THE SUPPORTED ORGANIZATION, RECEIVES MORE THAN 33-1/3% OF ITS TOTAL SUPPORT EACH YEAR FROM MEMBERSHIP DUES, INDUSTRY SUPPORT, USER FEES. PUBLICATIONS, LICENSING, AND OTHER SERVICES AND AAR DOES NOT RECEIVE MORE THAN 33-1/3% OF ITS SUPPORT EACH YEAR FROM INTEREST, DIVIDENDS, RENTS, AND ROYALTIES.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART IV, SECTION A, LINE 3C:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION DOES NOT PROVIDE DIRECT FINANCIAL SUPPORT TO AAR. RATHER, THE FOUNDATION ADMINISTERS CERTAIN CHARITABLE ACTIVITIES ON BEHALF OF AAR. AS A RESULT, THE FOUNDATION IS ABLE TO ENSURE THAT ITS RESOURCES ARE USED EXCLUSIVELY FOR CHARITABLE PURPOSES. THE FOUNDATION WAS ESTABLISHED TO PROVIDE WORLD CLASS POLICY RESEARCH DEVOTED TO SUSTAINING A SAFE, SECURE, TECHNOLOGICALLY ADVANCED AND MARKETPLACE DRIVEN RAILROAD INDUSTRY. THE FOUNDATION UNDERTAKES RESEARCH AND EDUCATION ACTIVITIES IN THE PUBLIC INTEREST AND THE PUBLIC GOOD. EFFORTS HAVE FOCUSED ON SAFETY, SECURITY, TECHNOLOGY AND EFFICIENCY END ENVIRONMENTALLY FRIENDLY PASSENGER AND FREIGHT RAIL OPERATIONS. THESE ACTIVITIES RESULT IN IMPROVEMENT OF SAFETY, SECURITY, AND INFRASTRUCTURE, AND ADVANCE THE STATE OF THE ART IN A VARIETY OF AREAS INCLUDING TRAIN CONTROL, WIRELESS COMMUNICATIONS, SUICIDE PREVENTION, SECURITY AND HIGHWAY GRADE CROSSINGS. THE SYSTEMS AND TOOLS DEVELOPED THROUGH THE FOUNDATION ARE INTENDED TO BE INTEROPERABLE THROUGHOUT THE RAILROAD SYSTEM, AND WHEREVER FEASIBLE, WILL USE NON-PROPRIETARY, INTER-OPERABLE STANDARDS.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART IV, SECTION A, LINE 6:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION PROVIDES APPLICATION AND USER HOSTING, TECHNICAL SUPPORT CAPABILITIES, AND DATA INTEGRATION FOR THE RAIL CORRIDOR RISK MANAGEMENT SYSTEM (RCRMS). THE RCRMS IS RECOGNIZED AS A KEY ENABLING TECHNOLOGY FOR THE FREIGHT RAILROAD INDUSTRY TO ASSIST IN ACCOMPLISHING THE RISK EVALUATION OBJECTIVES FOR COMPLIANCE WITH THE RAIL SAFETY IMPROVEMENT ACT OF 2008.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <TotalBookValueLandBuildingsAmt>0</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION IS GENERALLY EXEMPT FROM FEDERAL INCOME TAXES UNDER THE PROVISIONS OF IRC SECTION 501(C)(3) AND IS NOT CONSIDERED TO BE A PRIVATE FOUNDATION. INCOME, WHICH IS NOT RELATED TO EXEMPT PURPOSES, LESS APPLICABLE DEDUCTIONS, IS SUBJECT TO INCOME TAXES. THE FOUNDATION HAD NO NET UNRELATED BUSINESS INCOME FOR THE YEARS ENDED DECEMBER 31, 2023 AND 2022. MANAGEMENT EVALUATED THE FOUNDATIONS TAX POSITIONS AND CONCLUDED THAT THE FOUNDATION HAD TAKEN NO UNCERTAIN TAX POSITIONS THAT REQUIRE ADJUSTMENT TO THE FINANCIAL STATEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>0</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>IAN JEFFERIES</PersonNm>
        <TitleTxt>PRESIDENT &amp; DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>1341956</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>1012500</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>160579</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>31423</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>57222</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>2603680</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KATHRYN D KIRMAYER</PersonNm>
        <TitleTxt>VP &amp; GENERAL COUNSEL</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>484237</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>176307</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>43159</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>30723</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>33432</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>767858</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>PAUL HEDRICK</PersonNm>
        <TitleTxt>VP, TREASURER &amp; DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>395405</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>146466</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>3942</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>26330</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>47987</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>620130</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JOHN T GRAY</PersonNm>
        <TitleTxt>VP &amp; DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>409916</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>121796</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>21819</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>29137</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>35362</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>618030</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MICHAEL J RUSH</PersonNm>
        <TitleTxt>VP &amp; DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>389321</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>140995</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>8210</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>68278</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>5237</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>612041</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KRISTIN SMITH</PersonNm>
        <TitleTxt>VP &amp; DIRECTOR</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>345488</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>127492</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>1819</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>35984</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>45045</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>555828</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JEFFREY MOLLER</PersonNm>
        <TitleTxt>AVP-TRANSPORTATION</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>215353</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>42404</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>4127</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>36511</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>28867</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>327262</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>EDWARD A KENDALL JR</PersonNm>
        <TitleTxt>CORPORATE SECRETARY</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>230843</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>35280</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>878</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>15035</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>43470</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>325506</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>THE RAILROAD RESEARCH FOUNDATION DOES NOT COMPENSATE OFFICERS OR DIRECTORS. ALL COMPENSATION SHOWN IN PART VII OF THE FORM 990, AND SCHEDULE J, PAGE 2, PART II, IS PAID BY A RELATED ORGANIZATION OF THE FOUNDATION, THE ASSOCIATION OF AMERICAN RAILROADS. THE COMPENSATION DETERMINATION METHODOLOGY OF THE ASSOCIATION OF AMERICAN RAILROADS IS AS FOLLOWS: EXCEPT FOR ONE DIRECTOR WITH NO REPORTABLE COMPENSATION, ALL RRF DIRECTORS AND OFFICERS ARE EMPLOYED BY THE ASSOCIATION OF AMERICAN RAILROADS (AAR). IN REGARD TO AAR EMPLOYED DIRECTORS AND OFFICERS, COMPARABILITY DATA IS PREPARED BY AN INDEPENDENT COMPENSATION CONSULTANT FOR EXECUTIVE (CEO AND VICE PRESIDENTS) COMPENSATION. THAT INFORMATION IS PROVIDED ANNUALLY TO THE ORGANIZATION'S GOVERNANCE COMMITTEE AS PART OF ITS ANNUAL BUDGET DELIBERATIONS. EXECUTIVE SALARIES ARE REVIEWED AND ANY MERIT ADJUSTMENTS FOR THAT FISCAL YEAR ARE DETERMINED AS PART OF THE ANNUAL BUDGETARY PROCESS. CONTEMPORANEOUS MINUTES OF GOVERNANCE COMMITTEE MEETINGS ARE MAINTAINED.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleN documentId="RetDoc1043100001">
      <LiquidationOfAssetsTableGrp>
        <LiquidationOfAssetsDetail>
          <AssetsDistriOrExpnssPaidDesc>CASH</AssetsDistriOrExpnssPaidDesc>
          <DistributionDt>2024-05-01</DistributionDt>
          <FairMarketValueOfAssetAmt>4606</FairMarketValueOfAssetAmt>
          <MethodOfFMVDeterminationTxt>FMV</MethodOfFMVDeterminationTxt>
          <EIN>882977337</EIN>
          <BusinessName>
            <BusinessNameLine1Txt>MXV LEARNING INSTITUTE</BusinessNameLine1Txt>
          </BusinessName>
          <USAddress>
            <AddressLine1Txt>350 KEELER PARKWAY</AddressLine1Txt>
            <CityNm>PUEBLO</CityNm>
            <StateAbbreviationCd>CO</StateAbbreviationCd>
            <ZIPCd>81001</ZIPCd>
          </USAddress>
          <IRCSectionTxt>501(C)(3)</IRCSectionTxt>
        </LiquidationOfAssetsDetail>
      </LiquidationOfAssetsTableGrp>
      <DirectorOfSuccessorInd>1</DirectorOfSuccessorInd>
      <EmployeeOfSuccessorInd>0</EmployeeOfSuccessorInd>
      <OwnerOfSuccessorInd>0</OwnerOfSuccessorInd>
      <ReceiveCompensationInd>0</ReceiveCompensationInd>
      <AssetsDistributedInd>1</AssetsDistributedInd>
      <RequiredToNotifyAGInd>1</RequiredToNotifyAGInd>
      <AttorneyGeneralNotifiedInd>1</AttorneyGeneralNotifiedInd>
      <LiabilitiesPaidInd>1</LiabilitiesPaidInd>
      <BondsOutstandingInd>0</BondsOutstandingInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2E:</FormAndLineReferenceDesc>
        <ExplanationTxt>PERSON(S) INVOLVED: MICHAEL RUSH</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2E:</FormAndLineReferenceDesc>
        <ExplanationTxt>EXPLANATION OF INVOLVEMENT: DIRECTOR, NO BENEFIT RECEIVED OR TO BE RECEIVED.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleN>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 4</FormAndLineReferenceDesc>
        <ExplanationTxt>EFFECTIVE DECEMBER 27, 2023, RAILROAD RESEARCH FOUNDATION (RRF) WAS DISSOLVED AS A 501(C)(3) CORPORATION IN THE STATE OF DELAWARE. ALL RIGHTS, TITLE, INTEREST, AND CONTRACT IN THE RAIL CORRIDOR RISK MANAGEMENT SYSTEM (RCRMS) THAT ASSISTS RAIL OPERATORS WITH MAINTAINING COMMODITY FLOW INFORMATION FOR CERTAIN REGULATED HAZARDOUS MATERIALS AS WELL AS ANALYZING SAFETY AND SECURITY RISKS FOR SUCH COMMODITY FLOWS WERE ASSIGNED TO MXV LEARNING INSTITUTE, A 501(C)(3). AFTER PAYMENT OF RRF LIABILITIES AND OBLIGATIONS, ALL REMAINING ASSETS WERE DISTRIBUTED TO MXV LEARNING INSTITUTE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 8B</FormAndLineReferenceDesc>
        <ExplanationTxt>WHILE FORMAL MINUTES OF MANAGEMENT COMMITTEE MEETINGS ARE NOT RECORDED, ACTIONS TAKEN BY THE MANAGEMENT COMMITTEE ARE SUBSEQUENTLY PRESENTED IN WRITING TO THE BOARD OF DIRECTORS FOR RATIFICATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>RRF WAS DISSOLVED DECEMBER 27, 2023. AS BOARD MEMBERS WERE DISCHARGED OF THEIR DUTIES AT THAT TIME, THE 2023 FORM 990 WAS REVIEWED WITH THE FORMER TREASURER BEFORE FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S CONFLICT OF INTEREST POLICY REQUIRES EMPLOYEES AND DIRECTORS, ON AN ONGOING BASIS, TO IMMEDIATELY REPORT ANY CONFLICT OR POTENTIAL CONFLICT. WHEN AN EMPLOYEE OR DIRECTOR REASONABLY BELIEVES THAT A CONFLICT OF INTEREST MAY EXIST OR APPEARS TO EXIST, THE EMPLOYEE OR DIRECTOR MUST PROMPTLY AND FULLY DISCLOSE THE CONFLICT, REFRAIN FROM PARTICIPATION IN THE MATTER UNTIL THE QUESTION IS RESOLVED, AND FOLLOW ANY DIRECTIONS GIVEN BY THE ORGANIZATION CONCERNING THE MATTER.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION MAKES ITS GOVERNING DOCUMENTS AVAILABLE TO THE PUBLIC UPON REQUEST FOR THE SAME PERIOD OF DISCLOSURE AS SET FORTH IN SECTION 6104(D).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>CONTRACTOR FEES &amp; EXPENSES: PROGRAM SERVICE EXPENSES 846,453. MANAGEMENT AND GENERAL EXPENSES 0. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 846,453.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>ASSOCIATION OF AMERICAN RAILROADS</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>425 THIRD ST SW STE 1000</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20024</ZIPCd>
        </USAddress>
        <EIN>536000125</EIN>
        <PrimaryActivitiesTxt>TRADE ASSOCIATION</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(6)</ExemptCodeSectionTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>RAILPAC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>425 THIRD ST SW STE 1000</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20024</ZIPCd>
        </USAddress>
        <EIN>521811074</EIN>
        <PrimaryActivitiesTxt>POLITICAL ACTIVITIES</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>527</ExemptCodeSectionTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>ASSOCIATION OF AMERICAN RAILROADS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>AAR RETIREE LIFE INSURANCE TRUST</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>425 THIRD ST SW STE 1000</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20024</ZIPCd>
        </USAddress>
        <EIN>521161363</EIN>
        <PrimaryActivitiesTxt>PROVIDES RETIREE LIFE INSURANCE TO PLAN PARTICIPANTS</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(9)</ExemptCodeSectionTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>ASSOCIATION OF AMERICAN RAILROADS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>TRANSPORTATION TECHNOLOGY CENTER INC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>55500 DOT ROAD</AddressLine1Txt>
          <CityNm>PUEBLO</CityNm>
          <StateAbbreviationCd>CO</StateAbbreviationCd>
          <ZIPCd>81001</ZIPCd>
        </USAddress>
        <EIN>841440384</EIN>
        <PrimaryActivitiesTxt>RESEARCH &amp; TESTING</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DE</LegalDomicileStateCd>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>RAILINC CORPORATION</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>7001 WESTON PARKWAY STE 200</AddressLine1Txt>
          <CityNm>CARY</CityNm>
          <StateAbbreviationCd>NC</StateAbbreviationCd>
          <ZIPCd>27513</ZIPCd>
        </USAddress>
        <EIN>522131600</EIN>
        <PrimaryActivitiesTxt>IT &amp; SERVICES</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DE</LegalDomicileStateCd>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>1</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>1</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>1</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>1</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>1</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>1</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>0</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 1D AND 1E:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE TRANSACTION CORRESPONDING WITH LINES 1D AND 1E INVOLVES A LOAN WHICH RRF IS A GUARANTOR TO FOR THE TTCI/MXV RAIL LOAN FROM CAPITAL ONE AND AN UNSECURED LINE OF CREDIT WHICH WAS CO-SIGNED BY ORGANIZATIONS RELATED TO THE ASSOCIATION OF AMERICAN RAILROADS. THE $4 MILLION UNSECURED LINE OF CREDIT HAS A MATURITY DATE OF 10/31/2024. UNDER THE LINE OF CREDIT FACILITY, CAPITAL ONE BANK WILL ALLOW ADVANCES AT ANY TIME PROVIDED NO SIGNIFICANT DETERIORATION IN THE FINANCIAL CONDITION OF THE CO-BORROWERS HAS OCCURRED. AS OF DECEMBER 31, 2023, NO AMOUNTS HAD BEEN WITHDRAWN ON THE LINE OF CREDIT.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleR>
  </ReturnData>
</Return>