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        <NamePerson>FRANKLIN N HARDESTY</NamePerson>
        <Title>AVP-POLICY &amp; ECONOMICS</Title>
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        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>539572</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>58310</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>ROBERT E FRONCZAK</NamePerson>
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        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>462453</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>53364</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>WILLIAM C THOMPSON</NamePerson>
        <Title>PROGRAM MANAGER</Title>
        <AverageHoursPerWeek>40.00</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>250255</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>52269</OtherCompensation>
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      <NumberIndividualsGT100K>42</NumberIndividualsGT100K>
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      <TotalCompGT150K>1</TotalCompGT150K>
      <CompensationFromOtherSources>0</CompensationFromOtherSources>
      <ContractorCompensation>
        <NameOfContractor>
          <NameBusiness>
            <BusinessNameLine1>TRANSPORTATION TECHNOLOGY CENTER INC</BusinessNameLine1>
          </NameBusiness>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>55500 DOT ROAD</AddressLine1>
            <City>PUEBLO</City>
            <State>CO</State>
            <ZIPCode>81001</ZIPCode>
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        </AddressOfContractor>
        <DescriptionOfServices>TESTING &amp; RESEARCH</DescriptionOfServices>
        <Compensation>13450277</Compensation>
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        <NameOfContractor>
          <NameBusiness>
            <BusinessNameLine1>STEPTOE &amp; JOHNSON LLP</BusinessNameLine1>
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            <State>DC</State>
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      <ContractorCompensation>
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          <NameBusiness>
            <BusinessNameLine1>SKD KNICKERBOCKER LLC</BusinessNameLine1>
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            <City>WASHINGTON</City>
            <State>DC</State>
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        <NameOfContractor>
          <NameBusiness>
            <BusinessNameLine1>COMPASS LEXECON</BusinessNameLine1>
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            <State>MA</State>
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        </AddressOfContractor>
        <DescriptionOfServices>LEGAL CONSULTING</DescriptionOfServices>
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        <NameOfContractor>
          <NameBusiness>
            <BusinessNameLine1>BREAUX LOTT LEADERSHIP GROUP LLC</BusinessNameLine1>
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            <City>WASHINGTON</City>
            <State>DC</State>
            <ZIPCode>20036</ZIPCode>
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        </AddressOfContractor>
        <DescriptionOfServices>LEGISLATIVE CONSULTANTS</DescriptionOfServices>
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        <BusinessCode>900099</BusinessCode>
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      <ProgramServiceRevenue>
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        <RelatedOrExemptFunctionIncome>183924</RelatedOrExemptFunctionIncome>
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      <ProgramServiceRevenue>
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        <RelatedOrExemptFunctionIncome>4657</RelatedOrExemptFunctionIncome>
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      <TotalProgramServiceRevenue>56745201</TotalProgramServiceRevenue>
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      <OtherRevenueMisc>
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      <OtherRevenueMisc>
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      <MiscellaneousRevenue>
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        <UnrelatedBusinessRevenue>39336</UnrelatedBusinessRevenue>
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      <TotalRevenue>
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        <UnrelatedBusinessRevenue>99097</UnrelatedBusinessRevenue>
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      <GrantsToDomesticOrgs>
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      <CompCurrentOfficersDirectors>
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      <FeesForServicesLegal>
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      </FeesForServicesLegal>
      <FeesForServicesAccounting>
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      <FeesForServicesLobbying>
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      <FeesForServicesOther>
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      <Advertising>
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      </OfficeExpenses>
      <InformationTechnology>
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      <Occupancy>
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      <Travel>
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      </DepreciationDepletion>
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        <Description>INTERCOMPANY EXPENSES</Description>
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      <OtherExpenses>
        <Description>BAD DEBT</Description>
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      <OtherExpenses>
        <Description>OTHER EXPENSES</Description>
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      <TotalFunctionalExpenses>
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      <CashNonInterestBearing>
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      <LandBuildingsEquipmentBasisNet>
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        <EOY>8970899</EOY>
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      <TotalAssets>
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        <EOY>29888708</EOY>
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      <AccountsPayableAccruedExpenses>
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      <DeferredRevenue>
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      <EscrowAccountLiability>
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      <OtherLiabilities>
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        <EOY>34462251</EOY>
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      <TotalLiabilities>
        <BOY>40554000</BOY>
        <EOY>47852517</EOY>
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      <FollowSFAS117>X</FollowSFAS117>
      <UnrestrictedNetAssets>
        <BOY>-8451281</BOY>
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      <TotalNetAssetsFundBalances>
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        <EOY>-17963809</EOY>
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      <TotalLiabNetAssetsFundBalances>
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      <InfoInScheduleOPartXI>X</InfoInScheduleOPartXI>
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      <ReconcilationOtherChanges>-11880009</ReconcilationOtherChanges>
      <MethodOfAccountingAccrual>X</MethodOfAccountingAccrual>
      <AccountantCompileOrReview>0</AccountantCompileOrReview>
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        <Depreciation>826283</Depreciation>
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        <Depreciation>21291900</Depreciation>
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      <TotalOfBookValueLandBuildings>3371181</TotalOfBookValueLandBuildings>
      <CloselyHeldEquityInterests>
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        <MethodOfValuation>C</MethodOfValuation>
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      </OtherAssets>
      <OtherAssets>
        <Description>DEFERRED TAX ASSET</Description>
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      <OtherAssets>
        <Description>INVESTMENTS RELATED TO SUPP. EMPLOYEE BENEFIT PLANS</Description>
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        <Amount>3971763</Amount>
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      <OtherLiabilities>
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      <OtherLiabilities>
        <Description>OTHER POSTEMPLOYMENT BENEFITS</Description>
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      <OtherLiabilities>
        <Description>ACCRUED PENSION COST</Description>
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      <OtherLiabilities>
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      <OtherLiabilities>
        <Description>DEFERRED RENT PAYABLES</Description>
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      </OtherLiabilities>
      <OtherLiabilities>
        <Description>CAPITAL LEASE OBLIGATIONS</Description>
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      <TotalAdjustments>-11880009</TotalAdjustments>
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      <Form990ScheduleDPartXIV>
        <ReturnReference>PART IV, LINE 2B:</ReturnReference>
        <Explanation>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.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>DESCRIPTION OF UNCERTAIN TAX POSITIONS UNDER FIN 48:</Identifier>
        <ReturnReference>PART X:</ReturnReference>
        <Explanation>THE ASSOCIATION IS EXEMPT FROM FEDERAL INCOME TAXES UNDER SECTION 501(C)(6) OF THE IRC. HOWEVER, THE ASSOCIATION IS SUBJECT TO FEDERAL INCOME TAXES FOR ACTIVITIES THAT ARE UNRELATED TO ITS TAX-EXEMPT FUNCTION. TTCI AND RAILINC FILE SEPARATE FEDERAL AND STATE INCOME TAX RETURNS. 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, THE FOUNDATION IS SUBJECT TO FEDERAL INCOME TAXES FOR ACTIVITIES THAT ARE UNRELATED TO ITS TAX-EXEMPT FUNCTION. ACCORDINGLY, AMOUNTS REPORTED IN THE ACCOMPANYING CONSOLIDATED FINANCIAL STATEMENTS REPRESENT THE COMBINED INCOME TAX ACCOUNTS OF THE ASSOCIATION, 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 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 FINANCIAL STATEMENTS FROM SUCH A POSITION ARE MEASURED BASED ON THE LARGEST BENEFIT THAT HAS A GREATER THAN 50 PERCENT 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 CONSOLIDATED TAX POSITIONS AND CONCLUDED THAT THE ASSOCIATION HAS TAKEN NO UNCERTAIN TAX POSITIONS THAT REQUIRE ADJUSTMENT TO THE 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 2008.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>PART XI, LINE 8 - OTHER ADJUSTMENTS:</Identifier>
        <Explanation>UNRECOGNIZED CHANGE, DEFINED BENEFIT PLAN OBLIGATIONS -10,091,647.</Explanation>
      </Form990ScheduleDPartXIV>
    </IRS990ScheduleD>
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        <Region>NORTH AMERICA</Region>
        <NumberOfOffices>0</NumberOfOffices>
        <NumberOfEmployees>0</NumberOfEmployees>
        <TypeOfActivitiesConducted>PROGRAM SERVICES</TypeOfActivitiesConducted>
        <SpecificServicesProvided>TRAVEL, MEETING, LODGING, REGISTRATION FEES AND PERSONNEL COSTS</SpecificServicesProvided>
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      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
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        <NumberOfEmployees>0</NumberOfEmployees>
        <TypeOfActivitiesConducted>PROGRAM SERVICES</TypeOfActivitiesConducted>
        <SpecificServicesProvided>TRAVEL, MEETING, LODGING, REGISTRATION FEES AND PERSONNEL COSTS</SpecificServicesProvided>
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      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>EAST ASIA AND THE PACIFIC</Region>
        <NumberOfOffices>0</NumberOfOffices>
        <NumberOfEmployees>0</NumberOfEmployees>
        <TypeOfActivitiesConducted>PROGRAM SERVICES</TypeOfActivitiesConducted>
        <SpecificServicesProvided>TRAVEL, MEETING, LODGING, REGISTRATION FEES AND PERSONNEL COSTS</SpecificServicesProvided>
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      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>MIDDLE EAST AND NORTH AFRICA</Region>
        <NumberOfOffices>0</NumberOfOffices>
        <NumberOfEmployees>0</NumberOfEmployees>
        <TypeOfActivitiesConducted>PROGRAM SERVICES</TypeOfActivitiesConducted>
        <SpecificServicesProvided>TRAVEL, MEETING, LODGING, REGISTRATION FEES AND PERSONNEL COSTS</SpecificServicesProvided>
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      </AcctsActvsOutUSTable>
      <SubtotalNumberOfOffices>0</SubtotalNumberOfOffices>
      <SubtotalNumberOfEmployees>0</SubtotalNumberOfEmployees>
      <ContNumberOfOffices>0</ContNumberOfOffices>
      <ContNumberOfEmployees>0</ContNumberOfEmployees>
      <TotalNumberOfOffices>0</TotalNumberOfOffices>
      <TotalNumberOfEmployees>0</TotalNumberOfEmployees>
      <SubtotalAmountSpent>218802</SubtotalAmountSpent>
      <ContAmountSpent>0</ContAmountSpent>
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        <NontaxableBenefitsFilingOrg>20368</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>333073</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>MICHAEL J RUSH</NamePerson>
        <BaseCompensationFilingOrg>182897</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>630741</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>3542</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>113294</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>5867</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>936341</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>FRANKLIN N HARDESTY</NamePerson>
        <BaseCompensationFilingOrg>166797</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>121893</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>250882</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>50167</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>10481</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>600220</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>ROBERT E FRONCZAK</NamePerson>
        <BaseCompensationFilingOrg>169747</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>291160</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>1546</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>36233</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>19987</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>518673</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>WILLIAM C THOMPSON</NamePerson>
        <BaseCompensationFilingOrg>198165</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>29867</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>22223</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>27040</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>27970</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>305265</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartIII>
        <ReturnReference>PART I, LINE 1A</ReturnReference>
        <Explanation>TRAVEL FOR COMPANIONS: EDWARD HAMBERGER - $341 - NON-TAXABLE LOUIS P. WARCHOT - $184 - NON-TAXABLE JEFFREY D. MARSH - $787 - NON-TAXABLE GROSS-UP PAYMENTS: HUBERT O'BANNON - $69,092 (AMOUNT WAS INCLUDED IN SERP PAYMENT) HOUSING ALLOWANCE: WILLIAM C. THOMPSON - $11,780 - TAXABLE SOCIAL CLUB DUES: EDWARD R. HAMBERGER - $11,230 - NONTAXABLE LOUIS P. WARCHOT - $7,083 - NONTAXABLE ROBERT C. VANDERCLUTE - $75 - NONTAXABLE HUBERT K. O'BANNON - $7,035 - NONTAXABLE JOHN F. WETZEL - $720 - NONTAXABLE ROBERT E. FRONCZAK - $475 - NONTAXABLE</Explanation>
      </Form990ScheduleJPartIII>
      <Form990ScheduleJPartIII>
        <ReturnReference>PART I, LINE 4B</ReturnReference>
        <Explanation>THE FOLLOWING INDIVIDUALS PARTICIPATE IN SERP: EDWARD R. HAMBERGER $259,084 LOUIS P. WARCHOT $258,704 JOHN F. WETZEL $57,582 JANET L. BARTELMAY $36,434 MICHAEL RUSH $44,771 FOLLOWING INDIVIDUALS RECEIVED PAYMENTS MADE IN 2011 UNDER AAR'S LONG TERM INCENTIVE PLAN: JANET L. BARTELMAY - $297,123 LOUIS P. WARCHOT - $1,450,240 JOHN T. GRAY - $55,000 JOHN F. WETZEL - $115,072 MICHAEL J. RUSH - $577,772 ROBERT E. FRONCZAK - $265,875 FRANKLIN N. HARDESTY - $96,991 LONG TERM INCENTIVE PLAN PAYMENTS ARE SHOWN IN SCHEDULE J, PART II, COLUMN (B)(II) THE FOLLOWING INDIVIDUALS RECEIVED PAYMENTS FROM SERP: FRANKLIN HARDESTY - $247,864 HUBERT O'BANNON - $1,674,518 SERP PAYMENTS ARE SHOWN IN SCHEDULE J, PART II, COLUMN B(III).</Explanation>
      </Form990ScheduleJPartIII>
      <Form990ScheduleJPartIII>
        <Identifier>SUPPLEMENTAL INFORMATION</Identifier>
        <ReturnReference>PART III</ReturnReference>
        <Explanation>SCHEDULE J, PART II, DEFERRED COMPENSATION: COMPENSATION FOR CERTAIN PERSONS INCLUDES PAYMENTS MADE IN 2011 UNDER AAR'S LONG TERM INCENTIVE COMPENSATION PLAN (DEFERRED COMPENSATION). ADDITIONAL INFORMATION IS LOCATED IN SCHEDULE O.</Explanation>
      </Form990ScheduleJPartIII>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION A, LINE 6</ReturnReference>
        <Explanation>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 TO TOWNS AND CITIES THROUGHOUT THE U.S. 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.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION A, LINE 7B</ReturnReference>
        <Explanation>AAR CORPORATE DOCUMENTS ALLOW FOR DECISIONS OF THE BOARD TO BE APPROVED BY MEMBERS TO THE EXTENT PROVIDED BY LAW. ALL MATTERS ARE SUBJECT TO MEMBERSHIP APPROVAL IN ACCORDANCE WITH STATE LAW.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 11</ReturnReference>
        <Explanation>THE FORM 990 IS REVIEWED IN DETAIL BY THE ORGANIZATION'S CFO, PRESIDENT AND GENERAL COUNSEL PRIOR TO FILING. A COPY OF THE 2011 FORM 990 WAS MADE AVAILABLE TO EACH MEMBER OF THE ORGANIZATION'S GOVERNING BODY FOR REVIEW PRIOR TO FILING WITH THE IRS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 12C</ReturnReference>
        <Explanation>AN ANNUAL WRITTEN CONFIRMATION OF COMPLIANCE WITH THE ORGANIZATION'S CONFLICT OF INTEREST POLICIES IS REQUIRED FROM ALL AAR BOARD MEMBERS, 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, 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.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 15</ReturnReference>
        <Explanation>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.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION C, LINE 19</ReturnReference>
        <Explanation>THE ORGANIZATION MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC TO THE EXTENT REQUIRED BY LAW.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>CHANGES IN NET ASSETS OR FUND BALANCES:</Identifier>
        <ReturnReference>FORM 990, PART XI, LINE 5:</ReturnReference>
        <Explanation>NET UNREALIZED LOSSES ON INVESTMENTS: -1,788,362. UNRECOGNIZED CHANGE, DEFINED BENEFIT PLAN OBLIGATIONS -10,091,647. TOTAL TO FORM 990, PART XI, LINE 5: -11,880,009.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>RAILROAD RESEARCH FOUNDATION</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>425 THIRD ST SW SUITE 910</AddressLine1>
          <City>WASHINGTON</City>
          <State>DC</State>
          <ZIPCode>20024</ZIPCode>
        </AddressUS>
        <EIN>522344655</EIN>
        <PrimaryActivities>RESEARCH</PrimaryActivities>
        <LegalDomicileState>DE</LegalDomicileState>
        <ExemptCodeSection>501(C)(3)</ExemptCodeSection>
        <PublicCharityStatus>LINE 7</PublicCharityStatus>
        <DirectControllingEntityName>
          <BusinessNameLine1>ASSOCIATION OF AMERICAN RAILROADS</BusinessNameLine1>
        </DirectControllingEntityName>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>RAILPAC</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>425 THIRD ST SW SUITE 1000</AddressLine1>
          <City>WASHINGTON</City>
          <State>DC</State>
          <ZIPCode>20024</ZIPCode>
        </AddressUS>
        <EIN>000280743</EIN>
        <PrimaryActivities>POLITICAL ACTIVITIES</PrimaryActivities>
        <LegalDomicileState>DC</LegalDomicileState>
        <ExemptCodeSection>527</ExemptCodeSection>
        <DirectControllingEntityName>
          <BusinessNameLine1>ASSOCIATION OF AMERICAN RAILROADS</BusinessNameLine1>
        </DirectControllingEntityName>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>AAR-NRLC GROUP INSURANCE TRUST</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>425 THIRD ST SW SUITE 1000</AddressLine1>
          <City>WASHINGTON</City>
          <State>DC</State>
          <ZIPCode>20024</ZIPCode>
        </AddressUS>
        <EIN>521161363</EIN>
        <PrimaryActivities>PROVIDES RETIREE LIFE INSURANCE TO PLAN PARTICIPANTS</PrimaryActivities>
        <LegalDomicileState>DC</LegalDomicileState>
        <ExemptCodeSection>501(C)(9)</ExemptCodeSection>
        <DirectControllingEntityName>
          <BusinessNameLine1>ASSOCIATION OF AMERICAN RAILROADS</BusinessNameLine1>
        </DirectControllingEntityName>
        <ControlledOrg>0</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>TRANSPORTATION TECHNOLOGY CENTER INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>55500 DOT ROAD</AddressLine1>
          <City>PUEBLO</City>
          <State>CO</State>
          <ZIPCode>81001</ZIPCode>
        </AddressUS>
        <EIN>841440384</EIN>
        <PrimaryActivity>RAILROAD SVCS</PrimaryActivity>
        <LegalDomicileState>DE</LegalDomicileState>
        <DirectControllingEntityName>
          <BusinessNameLine1>ASSOCIATION OF AMERICAN RAILROADS</BusinessNameLine1>
        </DirectControllingEntityName>
        <TypeOfEntity>C</TypeOfEntity>
        <ShareOfTotalIncome>26477059</ShareOfTotalIncome>
        <ShareOfEOYAssets>27491199</ShareOfEOYAssets>
        <PercentageOwnership>1.00000</PercentageOwnership>
      </Form990ScheduleRPartIV>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>RAILINC CORPORATION</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>7001 WESTON PARKWAY SUITE 200</AddressLine1>
          <City>CARY</City>
          <State>NC</State>
          <ZIPCode>27513</ZIPCode>
        </AddressUS>
        <EIN>522131600</EIN>
        <PrimaryActivity>IT &amp; SVCS</PrimaryActivity>
        <LegalDomicileState>DE</LegalDomicileState>
        <DirectControllingEntityName>
          <BusinessNameLine1>ASSOCIATION OF AMERICAN RAILROADS</BusinessNameLine1>
        </DirectControllingEntityName>
        <TypeOfEntity>C</TypeOfEntity>
        <ShareOfTotalIncome>48004987</ShareOfTotalIncome>
        <ShareOfEOYAssets>27345869</ShareOfEOYAssets>
        <PercentageOwnership>1.00000</PercentageOwnership>
      </Form990ScheduleRPartIV>
      <ReceiptOfIntAnnRentsRoyalties>1</ReceiptOfIntAnnRentsRoyalties>
      <GiftGrantOrCapContrToOtherOrg>1</GiftGrantOrCapContrToOtherOrg>
      <GiftGrantOrCapContrFrOtherOrg>0</GiftGrantOrCapContrFrOtherOrg>
      <LoansOrGuaranteesToOtherOrg>1</LoansOrGuaranteesToOtherOrg>
      <LoansOrGuaranteesFromOtherOrg>1</LoansOrGuaranteesFromOtherOrg>
      <SaleOfAssetsToOtherOrg>0</SaleOfAssetsToOtherOrg>
      <PurchaseOfAssetsFromOtherOrg>0</PurchaseOfAssetsFromOtherOrg>
      <ExchangeOfAssets>0</ExchangeOfAssets>
      <RentalOfFacilitiesToOtherOrgs>1</RentalOfFacilitiesToOtherOrgs>
      <RentalOfFacilitiesFrOtherOrgs>0</RentalOfFacilitiesFrOtherOrgs>
      <PerformOfServicesForOtherOrgs>1</PerformOfServicesForOtherOrgs>
      <PerformOfServicesByOtherOrgs>1</PerformOfServicesByOtherOrgs>
      <SharingOfFacilities>1</SharingOfFacilities>
      <SharingOfPaidEmployees>1</SharingOfPaidEmployees>
      <ReimbursementPaidToOtherOrg>0</ReimbursementPaidToOtherOrg>
      <ReimbursementPaidByOtherOrg>1</ReimbursementPaidByOtherOrg>
      <OtherTransferToOtherOrg>0</OtherTransferToOtherOrg>
      <OtherTransferFromOtherOrg>0</OtherTransferFromOtherOrg>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>RAILINC CORPORATION</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>A</TransactionType>
        <AmountInvolved>155373</AmountInvolved>
        <MethodOfAmtDetermination>COST</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>RAILINC CORPORATION</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>K</TransactionType>
        <AmountInvolved>1171679</AmountInvolved>
        <MethodOfAmtDetermination>COST</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>RAILINC CORPORATION</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>L</TransactionType>
        <AmountInvolved>43228</AmountInvolved>
        <MethodOfAmtDetermination>COST</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>RAILINC CORPORATION</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>P</TransactionType>
        <AmountInvolved>266894</AmountInvolved>
        <MethodOfAmtDetermination>COST</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>RAILROAD RESEARCH FOUNDATION</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>B</TransactionType>
        <AmountInvolved>68512</AmountInvolved>
        <MethodOfAmtDetermination>COST</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>RAILROAD RESEARCH FOUNDATION</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>I</TransactionType>
        <AmountInvolved>12796</AmountInvolved>
        <MethodOfAmtDetermination>COST</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>RAILROAD RESEARCH FOUNDATION</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>K</TransactionType>
        <AmountInvolved>212221</AmountInvolved>
        <MethodOfAmtDetermination>COST</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>RAILROAD RESEARCH FOUNDATION</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>P</TransactionType>
        <AmountInvolved>113905</AmountInvolved>
        <MethodOfAmtDetermination>COST</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>TRANSPORTATION TECHNOLOGY CENTER INC</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>I</TransactionType>
        <AmountInvolved>5428</AmountInvolved>
        <MethodOfAmtDetermination>COST</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>TRANSPORTATION TECHNOLOGY CENTER INC</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>K</TransactionType>
        <AmountInvolved>794662</AmountInvolved>
        <MethodOfAmtDetermination>COST</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>TRANSPORTATION TECHNOLOGY CENTER INC</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>L</TransactionType>
        <AmountInvolved>13473230</AmountInvolved>
        <MethodOfAmtDetermination>COST</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>TRANSPORTATION TECHNOLOGY CENTER INC</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>P</TransactionType>
        <AmountInvolved>1015375</AmountInvolved>
        <MethodOfAmtDetermination>COST</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <Form990ScheduleRPartVII>
        <ReturnReference>FORM 990, PART V</ReturnReference>
        <Explanation>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, 2012. 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, 2011 NO AMOUNTS HAD BEEN WITHDRAWN ON THE LINE OF CREDIT.</Explanation>
      </Form990ScheduleRPartVII>
    </IRS990ScheduleR>
  </ReturnData>
</Return>