81 5Research Background•Roadcongestioninpeakhoursaresevere,especiallyintheregionneartheheadofficeofToyotaMotorCorporation(TMC).Itmighthappenasthefactthattherehadbeenmorethan25,800workersworkingin7differentfactoriesby2011.•OneTDMresearchgroupfoundedin1996hascontinuedTDMcampaign.Itaimstorelieveroadcongestioninpeakhours,promotepassengersofpublictransportation,andreduceenvironmentalburdenbypromotingtheeco-commutingcampaign.•TocontinueTDMcampaign,itiscrucialtoevaluatetheeffectofTDMcampaignandshowitsmeritsbysomequalitativemeasuringindexes,suchasvarianceoftraveltimeandlengthofqueueforsomecrucialroadsections.Railway, bus, bicycle Private cars 6Research Objective•TravelspeedofcrucialroadsectionsisusedforevaluatingtheeffectofTDMcampaigninToyotaCity.Tocollecttravelspeed,datafromMobileOperationControlSystem(MOCS),ProbeCarSystem(PCS)andJapanRoadTrafficInformationCenter(JRTIC)wereusedinpreviousresearchworks.•Thisstudyutilizestheprobedatafrombuslocationsystemtocollecttravelspeedofcrucialroadsections,andappliestheresultstoevaluatetheimpactofcommutingbehaviorsofworkersinToyotaMotorCorporationattheinitialstage,sincewedidnotgettheprobedataduringtheTDMcampaignperiod.•TheresultofthisstudymightindicatethespecialcasethatalltheworksinTMCshiftcommutingtransportmodefromprivatecarstotherailway,busorbicycle.Data TypeTimeContentsProblemsMOCSFrom 2004Travel speedAmount of collected data decreased by 20% in 2013, compared to 2004.PCSFrom 2005Travel speedContinuous probe data from private cars was not available.JARTICRecent yearsTravel speedLength of queueThe cost is expensive(550 USD/month).Table 1 Introduction of MOCS, PCS and JARTIC 7Introduction of Toyota City•ToyotaCityislocatedintheChukyometropolitanarea,Japan.•ByJanuary,2018,Toyotahasapopulationof424,970,whichisthesecondbiggestintheChukyometropolitanareafollowingNagoya.•Thetotalareais918.32km2,whichisthelargestintheChukyometropolitanarea.•ThegeologicalcharacteristicsofToyotaisthattheeastpartofthecityistheintermediaryareabetweenplainsandmountains.•ToyotaCityischaracterizedbytherelativelylowpopulationdensityexcepturbanareas,anditislackofsufficientrailwaysystem,comparedtometropolissuchasTokyo,OsakaorNagoya.Figure 2 Population density (unit: persons/km2) Figure 3 Accessibility to the railway system 8•TheresidentialareaisseparatedbyarivercalledtheYahagiRiver.Therearemainly8bridgesconnectingtwoseparatedpartsofthecity.•Therearemainly4bigfactoriesofTMCinthisregion.TheheadofficeofTMCislocatedattheToyotaHeadFactory.Sincethisspecialregionalcharacteristic,connectingbridgesarebottlenecksoftheroadnetworkinsideToyotaCity.Google MapIntroduction of Toyota City
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