35 5Research Objective•OneTransportationDemandManagement(TDM)researchgroupfoundedin1996hascontinuedTDMcampaign.Itaimstorelieveroadcongestioninpeakhours,promotepassengersofpublictransportationthrougheco-commutingcampaign.•TravelspeedofcrucialroadsectionsisusedforevaluatingtheeffectofTDMcampaigninToyotaCity.Tocollecttravelspeed,datafromMobileOperationControlSystem(MOCS),PCSandJapanRoadTrafficInformationCenter(JARTIC)wereusedinpreviousresearchworks.•ThisstudyutilizestheprobedataofBLStoanalyzetraveltimeofaroadbottleneck,andappliestheresultstoevaluatetheimpactofcommutingbehaviorsofworkersinToyotaMotorCorporationwhichcontributestoroadcongestion.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 6Introduction of Toyota City•ToyotaCityislocatedintheChukyometropolitanarea,Japan.•ByJanuary,2018,Toyotahasapopulationof424,970,whichisthesecondbiggestcityintheChukyometropolitanareafollowingNagoya.•Thetotalareais918.32km2,whichisthelargestintheChukyometropolitanarea.•ThegeologicalcharacteristicsofToyotaisthattheeastpartofthecityistheintermediaryareabetweenplainsandmountains.•ToyotaCityischaracterizedbytherelativelylowpopulationdensityexcepturbanareas,anditislackofsufficientrailwaysystem,comparedtometropolissuchasTokyo,OsakaorNagoya.Figure 3 Population density (unit: persons/km2) Figure 4 Accessibility to the railway system
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