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1、TheSimulationofTrafficFlowatSignalIntersectionbyUsingObject-OrientedDatabaseModelsAbstract-Thepaperbuildsuptrafficflowsimulatedmodelsatsignalintersectionanddescribesanalysis,designandimplementationofsoftwaresystembyapplyingSoftwareEngineeringTheory.Thepapermakesuseoft
2、heObject-Orientedtechnologywhichimitatesman'sthinkingtomodeltheruleofvehiclearrivingintersection，theruleoflanechoice,theruleofvehicleleavingfromintersection.Thesimulationoftrafficflowatsignalintersectionisanup-to-datemethodtoresearchtrafficcontrol.Itisexpectedthatthis
3、paperwillcontributetotheunderstandingofhowtodescribethecomplicatedtrafficphenomenonwithcomputerlanguage.IndexTerms-Object-OrientedDatabaseModel.SignalIntersection.TrafficFlowSimulation1.INTRODUCTIONSignalintersectionplayanimportantroleincapacityandsafetyaturbanroadnet
4、work,anditisregardedastheneckoftheroad.Statisticaldatahasindicatedthatthemainreasonoftrafficdelayliesinthedeficientcapacityofintersection.InJapan,itwasproved58percentoflifeaccidenthadhappenedatintersectionornearby(within30meters).Sometimesitisnorealistictoconstructint
5、ersectionbecauseoflimitedfundandland,thereforehowtoimprovevehicle'srunningsituationatintersectionhasbecomeacriticalquestion.Iftheproblemcanbeproperlysolved,itwouldhelptoincreasecapacityoftheroadnetwork,raiseefficiencyoftransportationsystemandreducetrafficaccident.Atpr
6、esentsomecountrieshavesuccessfulexperienceinthisfield，Despitefairlygoodfundamentalfacilities,thesecountriesthinkthatanadvancedmanagementmethodsplayanimportantroleinsolvingcongestionandsafetyquestions.Themethodsincludesoundtrafficlaws,advancedtrafficcontrolsystem,simul
7、atedsoftwarebesuitedtothepeculiarityoftrafficflow,etc.Beforethenewfacilitieswereusedandnewschemeputintoeffect,firstlytheycarryoutsimulationatlaboratorytofindouttheoptimalscheme.SomedifferentregionalcontrolsystemandsimulatedsoftwarehavebeenintroducedinChina,suchasSCOOT
8、,SCATS,TRANSYandNETSIM,QRSPICADY,etc,buttheappliedeffectisnotideal.Themainreasonsarethatwedidnotimitateitsrunningsituationbe
