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        <OtherCompensationAmt>64848</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOHN F WETZEL</PersonNm>
        <TitleTxt>VP, GOVERNMENT AFFAIRS</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>330363</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>101085</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JANET L BARTELMAY</PersonNm>
        <TitleTxt>CORPORATE SECRETARY</TitleTxt>
        <AverageHoursPerWeekRt>39.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1.00</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>673818</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>103916</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL J RUSH</PersonNm>
        <TitleTxt>ASSOCIATE GENERAL COUNSEL</TitleTxt>
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        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>841608</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>113263</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>WILLIAM C THOMPSON</PersonNm>
        <TitleTxt>PROGRAM MANAGER</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>288330</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>62939</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>PETER W FRENCH</PersonNm>
        <TitleTxt>AVP, SAFETY</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>244087</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>93512</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>KELLY FRENCH DONLEY</PersonNm>
        <TitleTxt>AVP, MEMBER SERVICES</TitleTxt>
        <AverageHoursPerWeekRt>39.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1.00</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
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      <Form990PartVIISectionAGrp>
        <PersonNm>DANIEL SAPHIRE</PersonNm>
        <TitleTxt>ASSISTANT GENERAL COUNSEL</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>75609</OtherCompensationAmt>
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      <TotalReportableCompFromOrgAmt>7633609</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>2120258</TotalOtherCompensationAmt>
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      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
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      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
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          <BusinessName>
            <BusinessNameLine1Txt>TRANSPORTATION TECHNOLOGY CENTER INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>55500 DOT RD PO BOX 11130</AddressLine1Txt>
            <CityNm>PUEBLO</CityNm>
            <StateAbbreviationCd>CO</StateAbbreviationCd>
            <ZIPCd>810010130</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>TESTING &amp; RESEARCH</ServicesDesc>
        <CompensationAmt>15583144</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>STEPTOE &amp; JOHNSON LLP</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1330 CONNECTICUT AV NW</AddressLine1Txt>
            <CityNm>WASHINGTON</CityNm>
            <StateAbbreviationCd>DC</StateAbbreviationCd>
            <ZIPCd>20036</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>LEGAL CONSULTING</ServicesDesc>
        <CompensationAmt>1549707</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>CALIFORNIA ENVIRONMENTAL ASSOCIATES</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>423 WASHINGTON ST 3RD FL</AddressLine1Txt>
            <CityNm>SAN FRANCISCO</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>94111</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>ENVIRONMENTAL/REGULATORY CONSULTING</ServicesDesc>
        <CompensationAmt>1190664</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>SIDELY AUSTIN LLP</BusinessNameLine1Txt>
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        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1501 K ST NW 3RD FL</AddressLine1Txt>
            <CityNm>WASHINGTON</CityNm>
            <StateAbbreviationCd>DC</StateAbbreviationCd>
            <ZIPCd>20005</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>REGULATORY/ECONOMIC CONSULTING</ServicesDesc>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>COMPASS LEXECON</BusinessNameLine1Txt>
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        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>230 STATE ST 9TH FL</AddressLine1Txt>
            <CityNm>BOSTON</CityNm>
            <StateAbbreviationCd>MA</StateAbbreviationCd>
            <ZIPCd>02109</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>REGULATORY/ECONOMIC CONSULTING</ServicesDesc>
        <CompensationAmt>758294</CompensationAmt>
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      <CntrctRcvdGreaterThan100KCnt>40</CntrctRcvdGreaterThan100KCnt>
      <ProgramServiceRevenueGrp>
        <Desc>MEMBERSHIP DUES</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>50350586</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>50350586</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>INDUSTRY SUPPORT</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>4777336</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>4777336</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>USER FEES</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>3760753</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>3760753</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>PUBLICATIONS</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>357013</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>357013</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>MEETINGS &amp; CONFERENCES</Desc>
        <BusinessCd>812900</BusinessCd>
        <TotalRevenueColumnAmt>206546</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>206546</UnrelatedBusinessRevenueAmt>
      </ProgramServiceRevenueGrp>
      <TotalOthProgramServiceRevGrp>
        <TotalRevenueColumnAmt>9473</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>9473</RelatedOrExemptFuncIncomeAmt>
      </TotalOthProgramServiceRevGrp>
      <TotalProgramServiceRevenueAmt>59461707</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>30974</TotalRevenueColumnAmt>
        <ExclusionAmt>30974</ExclusionAmt>
      </InvestmentIncomeGrp>
      <RoyaltiesRevenueGrp>
        <TotalRevenueColumnAmt>187634</TotalRevenueColumnAmt>
        <ExclusionAmt>187634</ExclusionAmt>
      </RoyaltiesRevenueGrp>
      <GrossRentsGrp>
        <RealAmt>69219</RealAmt>
      </GrossRentsGrp>
      <LessRentalExpensesGrp>
        <RealAmt>0</RealAmt>
      </LessRentalExpensesGrp>
      <RentalIncomeOrLossGrp>
        <RealAmt>69219</RealAmt>
      </RentalIncomeOrLossGrp>
      <NetRentalIncomeOrLossGrp>
        <TotalRevenueColumnAmt>69219</TotalRevenueColumnAmt>
        <ExclusionAmt>69219</ExclusionAmt>
      </NetRentalIncomeOrLossGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>1752341</SecuritiesAmt>
        <OtherAmt>509310</OtherAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>1624733</SecuritiesAmt>
        <OtherAmt>561249</OtherAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>127608</SecuritiesAmt>
        <OtherAmt>-51939</OtherAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>75669</TotalRevenueColumnAmt>
        <ExclusionAmt>75669</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <OtherRevenueMiscGrp>
        <Desc>INTERCO COST SHARE</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>2681040</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>2590410</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>90630</UnrelatedBusinessRevenueAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueMiscGrp>
        <Desc>OTHER REVENUE</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>260580</TotalRevenueColumnAmt>
        <ExclusionAmt>260580</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueMiscGrp>
        <Desc>ERIP/RET COST REIM</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>224994</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>224994</RelatedOrExemptFuncIncomeAmt>
      </OtherRevenueMiscGrp>
      <MiscellaneousRevenueGrp>
        <TotalRevenueColumnAmt>52344</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>52344</UnrelatedBusinessRevenueAmt>
      </MiscellaneousRevenueGrp>
      <OtherRevenueTotalAmt>3218958</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>63044161</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>62070565</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>349520</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>624076</ExclusionAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>3521292</TotalAmt>
      </GrantsToDomesticOrgsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>14458315</TotalAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>1854381</TotalAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>1378633</TotalAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>1419035</TotalAmt>
      </PayrollTaxesGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>2269223</TotalAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>102484</TotalAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesLobbyingGrp>
        <TotalAmt>1410629</TotalAmt>
      </FeesForServicesLobbyingGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>9994580</TotalAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>4660508</TotalAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>845867</TotalAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>142258</TotalAmt>
      </InformationTechnologyGrp>
      <OccupancyGrp>
        <TotalAmt>1725129</TotalAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>1102894</TotalAmt>
      </TravelGrp>
      <InterestGrp>
        <TotalAmt>504</TotalAmt>
      </InterestGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>448614</TotalAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>218879</TotalAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>INCOME TAX &amp; DEFERRED T</Desc>
        <TotalAmt>27732</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>INTERCOMPANY EXPENSES</Desc>
        <TotalAmt>15620057</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>OTHER EXPENSES</Desc>
        <TotalAmt>385290</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>PROPERTY TAXES</Desc>
        <TotalAmt>2095</TotalAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>-42061</TotalAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>61546338</TotalAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>4692247</BOYAmt>
        <EOYAmt>12140227</EOYAmt>
      </CashNonInterestBearingGrp>
      <AccountsReceivableGrp>
        <BOYAmt>4011763</BOYAmt>
        <EOYAmt>1621414</EOYAmt>
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      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>312708</BOYAmt>
        <EOYAmt>370227</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>26632759</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>23535246</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>2864211</BOYAmt>
        <EOYAmt>3097513</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>1028129</BOYAmt>
        <EOYAmt>1024476</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <InvestmentsOtherSecuritiesGrp>
        <BOYAmt>8970899</BOYAmt>
        <EOYAmt>8970899</EOYAmt>
      </InvestmentsOtherSecuritiesGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>2311963</BOYAmt>
        <EOYAmt>1543325</EOYAmt>
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      <TotalAssetsGrp>
        <BOYAmt>24191920</BOYAmt>
        <EOYAmt>28768081</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>6570804</BOYAmt>
        <EOYAmt>12208064</EOYAmt>
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      <DeferredRevenueGrp>
        <BOYAmt>1100700</BOYAmt>
        <EOYAmt>1501274</EOYAmt>
      </DeferredRevenueGrp>
      <EscrowAccountLiabilityGrp>
        <BOYAmt>642783</BOYAmt>
        <EOYAmt>669360</EOYAmt>
      </EscrowAccountLiabilityGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>25416767</BOYAmt>
        <EOYAmt>30539650</EOYAmt>
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      <TotalLiabilitiesGrp>
        <BOYAmt>33731054</BOYAmt>
        <EOYAmt>44918348</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsSFAS117Ind>X</OrganizationFollowsSFAS117Ind>
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        <BOYAmt>-9539134</BOYAmt>
        <EOYAmt>-16150267</EOYAmt>
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        <BOYAmt>-9539134</BOYAmt>
        <EOYAmt>-16150267</EOYAmt>
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      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>24191920</BOYAmt>
        <EOYAmt>28768081</EOYAmt>
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      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>1497823</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>-105170</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>-8003786</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <ConsolidatedBasisFinclStmtInd>X</ConsolidatedBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleC documentId="RetDoc1039700001">
      <SubstantiallyAllDuesNondedInd>0</SubstantiallyAllDuesNondedInd>
      <OnlyInHouseLobbyingInd>0</OnlyInHouseLobbyingInd>
      <AgreeCarryoverPriorYearInd>1</AgreeCarryoverPriorYearInd>
      <DuesAssessmentsAmt>50350586</DuesAssessmentsAmt>
      <NonDeductibleLbbyngPltclCYAmt>6496686</NonDeductibleLbbyngPltclCYAmt>
      <NonDedLbbyngPltclCyovAmt>-789033</NonDedLbbyngPltclCyovAmt>
      <NonDeductibleLbbyngPltclTotAmt>5707653</NonDeductibleLbbyngPltclTotAmt>
      <AggregateReportedDuesNtcAmt>5431748</AggregateReportedDuesNtcAmt>
      <CarriedOverAmt>275905</CarriedOverAmt>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <AgentTrusteeEtcInd>0</AgentTrusteeEtcInd>
      <InclEscrowCustodialAcctLiabInd>1</InclEscrowCustodialAcctLiabInd>
      <ExplanationProvidedInd>X</ExplanationProvidedInd>
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>3025086</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>981662</DepreciationAmt>
        <BookValueAmt>2043424</BookValueAmt>
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      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>1040706</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>910997</DepreciationAmt>
        <BookValueAmt>129709</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>22566967</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>21642587</DepreciationAmt>
        <BookValueAmt>924380</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>3097513</TotalBookValueLandBuildingsAmt>
      <CloselyHeldEquityInterestsGrp>
        <BookValueAmt>8970899</BookValueAmt>
        <MethodValuationCd>C</MethodValuationCd>
      </CloselyHeldEquityInterestsGrp>
      <TotalBookValueSecuritiesAmt>8970899</TotalBookValueSecuritiesAmt>
      <OtherAssetsOrgGrp>
        <Desc>CUSTODIAL FUNDS</Desc>
        <BookValueAmt>669360</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>DEFERRED TAX ASSET</Desc>
        <BookValueAmt>45457</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>INVESTMENTS RELATED TO SUPP. EMPLOYEE BENEFIT PLANS</Desc>
        <BookValueAmt>712321</BookValueAmt>
      </OtherAssetsOrgGrp>
      <OtherAssetsOrgGrp>
        <Desc>OTHER POSTEMPLOYMENT BENEFITS</Desc>
        <BookValueAmt>116187</BookValueAmt>
      </OtherAssetsOrgGrp>
      <TotalBookValueOtherAssetsAmt>1543325</TotalBookValueOtherAssetsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>CURRENT PORTION-OPEB LIABILITY</Desc>
        <Amt>121000</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>ACCRUED PENSION COST</Desc>
        <Amt>20727638</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>SERP OBLIGATION</Desc>
        <Amt>3545081</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>DEFERRED RENT PAYABLES</Desc>
        <Amt>3840403</Amt>
      </OtherLiabilitiesOrgGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>DUE TO SUBSIDIARIES</Desc>
        <Amt>2305528</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>30539650</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART IV, LINE 2B:</FormAndLineReferenceDesc>
        <ExplanationTxt>CUSTODIAL FUNDS ARE CARRIED AS AN ASSET AND OFFSETTING LIABILITY IN THE ASSOCIATION'S BALANCE SHEET. THE ASSOCIATION ACTS AS CUSTODIAN AND AGENT ON BEHALF OF CERTAIN RAILROAD INDUSTRY RELATED ORGANIZATIONS FOR WHICH THE ASSOCIATION PROVIDES BOOKKEEPING SERVICES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>AAR IS EXEMPT FROM FEDERAL INCOME TAXES UNDER SECTION 501(C)(6) OF THE IRC. HOWEVER, AAR IS SUBJECT TO FEDERAL INCOME TAXES FOR ACTIVITIES THAT ARE UNRELATED TO ITS TAX-EXEMPT FUNCTION. RRF IS INCORPORATED UNDER IRC SECTION 501(C)(3) AS A TAX-EXEMPT ORGANIZATION AND IS FURTHER CLASSIFIED AS A PUBLIC CHARITY UNDER SECTION 509(A)(1) OF THE IRC; HOWEVER, RRF IS SUBJECT TO FEDERAL INCOME TAXES FOR ACTIVITIES THAT ARE UNRELATED TO ITS TAX-EXEMPT FUNCTION. AAR AND RRF, AS TAX EXEMPT ORGANIZATIONS, FILE SEPARATE INFORMATION RETURNS, FORM 990-RETURN OF ORGANIZATION EXEMPT FROM INCOME TAX, AND TO THE EXTENT OF ANY UNRELATED ACTIVITIES TO THEIR TAX-EXEMPT FUNCTION, FILE FORM 990-T-RETURN OF ORGANIZATION BUSINESS INCOME TAX RETURN. TTCI AND RAILINC FILE SEPARATE FEDERAL AND STATE INCOME TAX RETURNS. ACCORDINGLY, AMOUNTS REPORTED IN THE ACCOMPANYING CONSOLIDATED FINANCIAL STATEMENTS REPRESENT THE COMBINED INCOME TAX ACCOUNTS OF AAR, TTCI, RAILINC, AND RRF. DEFERRED TAX ASSETS AND LIABILITIES ARE RECOGNIZED FOR THE FUTURE TAX CONSEQUENCES ATTRIBUTABLE TO DIFFERENCES BETWEEN THE FINANCIAL STATEMENT CARRYING AMOUNTS OF EXISTING ASSETS AND LIABILITIES AND THEIR RESPECTIVE TAX BASES AND OPERATING LOSS AND TAX CREDIT CARRYFORWARDS. DEFERRED TAX ASSETS AND LIABILITIES ARE MEASURED USING ENACTED TAX RATES EXPECTED TO APPLY TO TAXABLE INCOME IN THE YEARS IN WHICH THOSE TEMPORARY DIFFERENCES ARE EXPECTED TO REVERSE. IF APPROPRIATE, DEFERRED TAX ASSETS ARE REDUCED BY A VALUATION ALLOWANCE, WHICH REFLECTS EXPECTATIONS OF THE EXTENT TO WHICH SUCH ASSETS WILL BE REALIZED. THE ASSOCIATION FOLLOWS THE CODIFICATION TOPIC, INCOME TAXES, WHICH ADDRESSES THE DETERMINATION OF WHETHER TAX BENEFITS CLAIMED OR EXPECTED TO BE CLAIMED ON A TAX RETURN SHOULD BE RECORDED IN THE CONSOLIDATED FINANCIAL STATEMENTS. UNDER THIS GUIDANCE, THE ASSOCIATION MAY RECOGNIZE THE TAX BENEFIT FROM AN UNCERTAIN TAX POSITION ONLY IF IT IS MORE LIKELY THAN NOT THAT THE TAX POSITION WILL BE SUSTAINED ON EXAMINATION BY TAXING AUTHORITIES, BASED ON THE TECHNICAL MERITS OF THE POSITION. THE TAX BENEFITS RECOGNIZED IN THE CONSOLIDATED FINANCIAL STATEMENTS FROM SUCH A POSITION ARE MEASURED BASED ON THE LARGEST BENEFIT THAT HAS A GREATER THAN 50% LIKELIHOOD OF BEING REALIZED UPON ULTIMATE SETTLEMENT. THE GUIDANCE ON ACCOUNTING FOR UNCERTAINTY IN INCOME TAXES ALSO ADDRESSES DE-RECOGNITION, CLASSIFICATION, INTEREST AND PENALTIES ON INCOME TAXES, AND ACCOUNTING IN INTERIM PERIODS. MANAGEMENT EVALUATED THE ASSOCIATION'S PRECONSOLIDATED TAX POSITIONS AND CONCLUDED THAT THE ASSOCIATION HAS TAKEN NO UNCERTAIN TAX POSITIONS THAT REQUIRE ADJUSTMENT TO THE CONSOLIDATED FINANCIAL STATEMENTS TO COMPLY WITH THE PROVISIONS OF THIS GUIDANCE. GENERALLY, THE ASSOCIATION IS NO LONGER SUBJECT TO INCOME TAX EXAMINATIONS BY THE U.S. FEDERAL, STATE, OR LOCAL TAX AUTHORITIES FOR YEARS BEFORE 2011.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleF documentId="RetDoc1040500001">
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        <RegionTxt>NORTH AMERICA</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>PROGRAM SERVICES</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>TRAVEL &amp; ENTERTAINMENT, REGISTRATION FEES AND PERSONNEL COSTS</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>138348</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EUROPE (INCLUDING ICELAND &amp; GREENLAND)</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>PROGRAM SERVICES</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>TRAVEL &amp; ENTERTAINMENT AND PERSONNEL COSTS</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>10448</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>EAST ASIA AND THE PACIFIC</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>PROGRAM SERVICES</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>TRAVEL &amp; ENTERTAINMENT AND PERSONNEL COSTS</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>6235</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalOfficesCnt>0</SubtotalOfficesCnt>
      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
      <ContinutationTotalOfficeCnt>0</ContinutationTotalOfficeCnt>
      <ContinutationTotalEmployeeCnt>0</ContinutationTotalEmployeeCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>155031</SubtotalSpentAmt>
      <ContinuationSpentAmt>0</ContinuationSpentAmt>
      <TotalSpentAmt>155031</TotalSpentAmt>
      <TransferToForeignCorpInd>0</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>0</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>0</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>0</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>0</ForeignPartnershipInd>
      <BoycottCountriesInd>0</BoycottCountriesInd>
    </IRS990ScheduleF>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>ALSRRA</BusinessNameLine1Txt>
        </RecipientBusinessName>
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          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20001</ZIPCd>
        </USAddress>
        <RecipientEIN>536000080</RecipientEIN>
        <IRCSectionDesc>501(C)(6)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
        <PurposeOfGrantTxt>EVENT SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>ALZHEIMER'S ASSOCIATION NCAC</BusinessNameLine1Txt>
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          <CityNm>FAIRFAX</CityNm>
          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>22030</ZIPCd>
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        <PurposeOfGrantTxt>EVENT SUPPORT</PurposeOfGrantTxt>
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      <RecipientTable>
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          <AddressLine2Txt>FLOOR</AddressLine2Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20006</ZIPCd>
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        <CashGrantAmt>100000</CashGrantAmt>
        <PurposeOfGrantTxt>PROGRAM SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
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          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20005</ZIPCd>
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        <PurposeOfGrantTxt>PROGRAM SUPPORT</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
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        </RecipientBusinessName>
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          <AddressLine1Txt>PO BOX 214</AddressLine1Txt>
          <CityNm>MCLEAN</CityNm>
          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>22101</ZIPCd>
        </USAddress>
        <RecipientEIN>300220742</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>8104</CashGrantAmt>
        <PurposeOfGrantTxt>PROGRAM SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>COALITION AGAINST BIGGER TRUCKS LLC</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>901 N PITT STREET SUITE 310</AddressLine1Txt>
          <CityNm>ALEXANDRIA</CityNm>
          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>22314</ZIPCd>
        </USAddress>
        <RecipientEIN>943229678</RecipientEIN>
        <IRCSectionDesc>501(C)(4)</IRCSectionDesc>
        <CashGrantAmt>1300000</CashGrantAmt>
        <PurposeOfGrantTxt>PROGRAM SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
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          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
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        <PurposeOfGrantTxt>EVENT SUPPORT</PurposeOfGrantTxt>
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      <RecipientTable>
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        </RecipientBusinessName>
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          <CityNm>ALEXANDRIA</CityNm>
          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>22314</ZIPCd>
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        <IRCSectionDesc>501(C)(4)</IRCSectionDesc>
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        <PurposeOfGrantTxt>PROGRAM SUPPORT</PurposeOfGrantTxt>
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      <RecipientTable>
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      <RecipientTable>
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        </RecipientBusinessName>
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          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>22314</ZIPCd>
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        <PurposeOfGrantTxt>PROGRAM SUPPORT</PurposeOfGrantTxt>
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      <RecipientTable>
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          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>222045757</ZIPCd>
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      <RecipientTable>
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        <PurposeOfGrantTxt>PROGRAM SUPPORT</PurposeOfGrantTxt>
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      <RecipientTable>
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      <RecipientTable>
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          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
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        <PurposeOfGrantTxt>PROGRAM SUPPORT</PurposeOfGrantTxt>
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      <RecipientTable>
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          <StateAbbreviationCd>MD</StateAbbreviationCd>
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      <RecipientTable>
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        <PurposeOfGrantTxt>PROGRAM SUPPORT</PurposeOfGrantTxt>
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      <RecipientTable>
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      <RecipientTable>
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        <USAddress>
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          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20062</ZIPCd>
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        <IRCSectionDesc>501(C)(6)</IRCSectionDesc>
        <CashGrantAmt>1000000</CashGrantAmt>
        <PurposeOfGrantTxt>PROGRAM SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <Total501c3OrgCnt>11</Total501c3OrgCnt>
      <TotalOtherOrgCnt>9</TotalOtherOrgCnt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>AAR AWARDS ASSISTANCE TO ORGANIZATIONS RECOGNIZED AS TAX-EXEMPT UNDER IRC SECTION 501(C) OR AS A COLLEGE OR UNIVERSITY.</ExplanationTxt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JEFFREY D MARSH</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>PATRICIA M REILLY</PersonNm>
        <TitleTxt>SR. VP, COMMUNICATIONS</TitleTxt>
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        <PersonNm>ROBERT C VANDERCLUTE</PersonNm>
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        <PersonNm>LOUIS P WARCHOT</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JOHN F WETZEL</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JANET L BARTELMAY</PersonNm>
        <TitleTxt>CORPORATE SECRETARY</TitleTxt>
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        <DeferredCompensationFlngOrgAmt>92935</DeferredCompensationFlngOrgAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MICHAEL J RUSH</PersonNm>
        <TitleTxt>ASSOCIATE GENERAL COUNSEL</TitleTxt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>WILLIAM C THOMPSON</PersonNm>
        <TitleTxt>PROGRAM MANAGER</TitleTxt>
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        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>PETER W FRENCH</PersonNm>
        <TitleTxt>AVP, SAFETY</TitleTxt>
        <BaseCompensationFilingOrgAmt>206701</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KELLY FRENCH DONLEY</PersonNm>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DANIEL SAPHIRE</PersonNm>
        <TitleTxt>ASSISTANT GENERAL COUNSEL</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 1A</FormAndLineReferenceDesc>
        <ExplanationTxt>TRAVEL FOR COMPANIONS: EDWARD R. HAMBERGER RECEIVED A NON-TAXABLE SPOUSAL TRAVEL DUE TO ACTIVE PARTICIPATION IN BUSINESS EVENT. TAX INDEMNIFICATION AND GROSS-UP PAYMENTS: JANET L. BARTELMAY - $8,136 (AMOUNT INCLUDES SERP PAYMENT AND TAX GROSS-UP) MICHAEL J. RUSH - $20,021 (AMOUNT INCLUDES SERP PAYMENT AND TAX GROSS-UP) HOUSING ALLOWANCE: WILLIAM C. THOMPSON - $14,176 - TAXABLE NONTAXABLE SOCIAL CLUB DUES: EDWARD R. HAMBERGER - $11,827 LOUIS P. WARCHOT - $8,043 ROBERT C. VANDERCLUTE - $40 IAN JEFFRIES - $1,322 JOHN F. WETZEL - $720 WILLIAM C. THOMPSON - $516</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 4B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOLLOWING INDIVIDUALS PARTICIPATE IN A SERP: EDWARD R. HAMBERGER - $766,681 JEFFREY D. MARSH - $93,810 PATRICIA M. REILLY - $204,222 SCHEDULE J, PART II, DEFERRED COMPENSATION: THE FOLLOWING INDIVIDUAL RECEIVED PAYMENT FROM SERP: JANET L. BARTELMAY - $403,112 MICHAEL J. RUSH - $537,058 SERP PAYMENTS ARE SHOWN IN SCHEDULE J, PART II, COLUMN B(III).</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="RetDoc1042800001">
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1Txt>TRANSPORTATION TECHNOLOGY CENTER INC</BusinessNameLine1Txt>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>EDWARD HAMBERGER-BOARD, JANET BARTELMAY-OFFICER, LOUIS WARCHOT-OFFICER</RelationshipDescriptionTxt>
        <TransactionAmt>17587808</TransactionAmt>
        <TransactionDesc>PROG SVCS, PERFORMANCE OF SERVICES BY THE INTERESTED ENTITY, EXPENSE REIMBURSEMENT PAID BY THE INTERESTED ENTITY, FACILITIES LEASED BY THE INTERESTED ENTITY, AND PERFORMACE OF SERVICES FOR THE INTERESTED ENTITY.;LISTTOTAL 15382098</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1Txt>RAILINC CORPORATION</BusinessNameLine1Txt>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>EDWARD HAMBERGER-BOARD AND JANET BARTELMAY-OFFICER</RelationshipDescriptionTxt>
        <TransactionAmt>6010735</TransactionAmt>
        <TransactionDesc>PROG SVCS, PERFORMANCE OF SERVICES FOR THE INTERESTED ENTITY, PAYMENT OF ROYALTIES BY ENTITY, AND EXPENSE REIMBURSEMENT PAID BY THE INTERESTED ENTITY.;LISTTOTAL 2165481</TransactionDesc>
        <SharingOfRevenuesInd>0</SharingOfRevenuesInd>
      </BusTrInvolveInterestedPrsnGrp>
    </IRS990ScheduleL>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>EDWARD HAMBERGER, JANET BARTELMAY AND LOUIS WARCHOT - BUSINESS RELATIONSHIP</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>ORGANIZATION'S MEMBERS AAR MEMBERS INCLUDE THE MAJOR FREIGHT RAILROADS OF THE UNITED STATES, CANADA AND MEXICO, AS WELL AS SMALLER RAILROADS THAT PROVIDE FREIGHT OR PASSENGER SERVICES THROUGHOUT NORTH AMERICA IN ADDITION, AMTRAK IS A FULL MEMBER OF AAR. AAR HAS THREE CLASSES OF MEMBERSHIP: (1) FULL MEMBERSHIP IS AVAILABLE TO U.S. RAILROADS, (2) SPECIAL MEMBERSHIP IS A AVAILABLE TO CANADIAN AND MEXICAN RAILROADS, AND (3) ASSOCIATE MEMBERSHIP IS AVAILABLE TO NON-CLASS 1 RAILROADS AND RAILROAD SUPPLIERS. AAR'S FULL MEMBERS HAVE VOTING RIGHTS AS PRESCRIBED IN THE AAR BY-LAWS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>AAR CORPORATE DOCUMENTS ALLOW FOR DECISIONS TO BE APPROVED BY MEMBERS TO THE EXTENT PROVIDED BY LAW. ALL MATTERS ARE SUBJECT TO APPROVAL IN ACCORDANCE WITH STATE/LOCAL LAW.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 IS REVIEWED IN DETAIL BY THE ORGANIZATION'S CFO, PRESIDENT AND GENERAL COUNSEL PRIOR TO FILING. A COPY OF THE 2014 FORM 990 WAS MADE AVAILABLE TO EACH MEMBER OF THE ORGANIZATION'S GOVERNING BODY FOR REVIEW PRIOR TO FILING WITH THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>AN ANNUAL WRITTEN CONFIRMATION OF COMPLIANCE WITH THE ORGANIZATION'S CONFLICT OF INTEREST POLICIES IS REQUIRED FROM ALL AAR EMPLOYEES AND DIRECTORS. THE ANNUAL CONFLICT OF INTEREST DISCLOSURES OF EMPLOYEES ARE REVIEWED BY THE DIRECTOR OF HUMAN RESOURCES OR GENERAL COUNSEL. THE DISCLOSURES OF THE OFFICERS,INCLUDING PRESIDENT, AND CEO, ARE REPORTED TO THE GENERAL COUNSEL. DISCLOSURES OF THE GENERAL COUNSEL ARE REPORTED TO THE CEO. IN THE EVENT OF AN ACTUAL OR POTENTIAL CONFLICT, AAR WOULD INVESTIGATE AND TAKE APPROPRIATE ACTION TO AVOID THE ACTUAL OR POTENTIAL CONFLICT. SUCH ACTION WOULD INCLUDE THAT THE CONFLICTED PERSON DOES NOT PARTICIPATE IN THE REVIEW, RESOLUTION PROCESS, OR ANY DELIBERATION/DECISION MAKING RELATED TO THE MATTER. FOLLOW UP ACTIONS ARE TAKEN AS NEEDED BY AAR GENERAL COUNSEL OR THE CEO.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>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>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC TO THE EXTENT REQUIRED BY LAW.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER FEES 5,433,101. ECONOMIC REGULATION 4,561,479.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>UNRECOGNIZED CHANGE, DEFINED BENEFIT PLAN OBLIGATIONS -8,003,786.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>RAILROAD RESEARCH FOUNDATION</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>425 THIRD ST SW SUITE 910</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20024</ZIPCd>
        </USAddress>
        <EIN>522344655</EIN>
        <PrimaryActivitiesTxt>RESEARCH</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DE</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 7</PublicCharityStatusTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>ASSOCIATION OF AMERICAN RAILROADS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>1</ControlledOrganizationInd>
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        <DisregardedEntityName>
          <BusinessNameLine1Txt>RAILPAC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>425 THIRD ST SW SUITE 1000</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20024</ZIPCd>
        </USAddress>
        <EIN>000280743</EIN>
        <PrimaryActivitiesTxt>POLITICAL ACTIVITIES</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DC</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>527</ExemptCodeSectionTxt>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>ASSOCIATION OF AMERICAN RAILROADS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <ControlledOrganizationInd>1</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>AAR RETIREE LIFE INSURANCE TRUST</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>425 THIRD ST SW SUITE 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>1</ControlledOrganizationInd>
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      <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>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>ASSOCIATION OF AMERICAN RAILROADS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ShareOfTotalIncomeAmt>32459814</ShareOfTotalIncomeAmt>
        <ShareOfEOYAssetsAmt>33417527</ShareOfEOYAssetsAmt>
        <OwnershipPct>1.00000</OwnershipPct>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>RAILINC CORPORATION</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>7001 WESTON PARKWAY SUITE 200</AddressLine1Txt>
          <CityNm>CARY</CityNm>
          <StateAbbreviationCd>NC</StateAbbreviationCd>
          <ZIPCd>27513</ZIPCd>
        </USAddress>
        <EIN>522131600</EIN>
        <PrimaryActivitiesTxt>IT &amp; SVCS</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>DE</LegalDomicileStateCd>
        <DirectControllingEntityName>
          <BusinessNameLine1Txt>ASSOCIATION OF AMERICAN RAILROADS</BusinessNameLine1Txt>
        </DirectControllingEntityName>
        <EntityTypeTxt>C</EntityTypeTxt>
        <ShareOfTotalIncomeAmt>64701171</ShareOfTotalIncomeAmt>
        <ShareOfEOYAssetsAmt>33291924</ShareOfEOYAssetsAmt>
        <OwnershipPct>1.00000</OwnershipPct>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>1</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>1</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>1</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>1</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>1</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>1</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>1</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>1</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>1</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>1</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>1</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>1</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>RAILINC CORPORATION</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>A</TransactionTypeTxt>
        <InvolvedAmt>155373</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>RAILINC CORPORATION</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>L</TransactionTypeTxt>
        <InvolvedAmt>1757525</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>RAILINC CORPORATION</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>Q</TransactionTypeTxt>
        <InvolvedAmt>330291</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>RAILINC CORPORATION</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>S</TransactionTypeTxt>
        <InvolvedAmt>3735028</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>RAILROAD RESEARCH FOUNDATION</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>B</TransactionTypeTxt>
        <InvolvedAmt>125000</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>RAILROAD RESEARCH FOUNDATION</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>L</TransactionTypeTxt>
        <InvolvedAmt>123469</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>TRANSPORTATION TECHNOLOGY CENTER INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>L</TransactionTypeTxt>
        <InvolvedAmt>916378</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>TRANSPORTATION TECHNOLOGY CENTER INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>M</TransactionTypeTxt>
        <InvolvedAmt>15586964</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>TRANSPORTATION TECHNOLOGY CENTER INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>Q</TransactionTypeTxt>
        <InvolvedAmt>1078458</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>RAILPAC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>R</TransactionTypeTxt>
        <InvolvedAmt>60742</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>COST</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART V</FormAndLineReferenceDesc>
        <ExplanationTxt>THE TRANSACTIONS WITH RAILROAD RESEARCH FOUNDATION CORRESPONDING WITH LINES 1M AND 1N ARE MINIMAL IN AMOUNT. THE TRANSACTION CORRESPONDING WITH LINES 1D AND 1E INVOLVES AN UNSECURED LINE OF CREDIT WHICH WAS CO-SIGNED BY ORGANIZATIONS RELATED TO THE ASSOCIATION OF AMERICAN RAILROADS. DURING 2007, IN CONNECTION WITH AAR'S RENEWAL OF AN UNSECURED LINE OF CREDIT WITH SUNTRUST BANK, THE ASSOCIATION ENTERED INTO AN UNSECURED LINE OF CREDIT AS A CO-BORROWER WITH TTCI AND RAILINC (AS WHOLLY OWNED SUBSIDIARIES OF AAR), AND WITH RRF (AS AN AFFILIATED ORGANIZATION)IN THE AMOUNT OF $4 MILLION THAT EXPIRED JULY 31, 2008 AND WAS SUBSEQUENTLY RENEWED ANNUALLY THROUGH JULY 31, 2013. UNDER THE LINE OF CREDIT FACILITY, SUNTRUST BANK WILL ALLOW ADVANCES AT ANY TIME PROVIDED NO SIGNIFICANT DETERIORATION IN THE FINANCIAL CONDITION OF THE CO-BORROWERS HAS OCCURED. AS OF DECEMBER 31, 2012 NO AMOUNTS HAD BEEN WITHDRAWN ON THE LINE OF CREDIT.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleR>
  </ReturnData>
</Return>