《》2011991,。,,,、、,。,,,。,,,。,,,,。RFID、、,,、,、、,、。,、,。2,,。2.1(ElectronicTollCollection,ETC),,。2.2,、,,、。,,,。,,,,。2.3、,“”,“”,“”、,、,、,,。,82%。:、、、、、、,,。··□TELECOMMUNICATIONSNETWORKTECHNOLOGYNo.9、。2.4,,,,。,,,。2.5,。,,GPS;,,GPS,;,GPS、、,,,。3,,、、。,,;,、、“”,、,、、;、、,,GPS。,。,1,、、,。,,,GPS,GPRS/3G;,,DSRC(DedicatedShortRangeCommunication,);,。,,,,、GPS、。。3.1,,、,、,,OBU。,、、、、RSU。,,1NETWORKTECHNOLOGY··《》201199GPS,,;、,。,,,,,、、()、、。,MEMS、、,。25~40MEMS,MEMS,。,MEMS,、、、,,。,,、、;,、、(、、)。,,、,,。、,,、、,。,,,。、、,,,。,、,、、。,。,,,,、、、,、。3.2,()。,、,GRPS/3G,WLAN,。,(VehicletoVehicle,V2V)(VehicletoInfrastructure,V2I),DSRC,WLAN。DSRC,,、、DSRC,。DSRC,,DSRC,DSRCV2VV2I。,CALM(Com-munications,Air-interface,LongandMediumRange),V2V,V2I。,,DSRC,CALMV2V,V2I。DSRC(ETC),、,V2VV2I。DSRC5.8~5.9GHz,、、。ISO,IEEE,CENARIBDSRC,CALM,,。3.3,,,。,··□TELECOMMUNICATIONSNETWORKTECHNOLOGYNo.9□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□□,。,,、。V2VV2I,,,,、,。,、,,,。,,。,,,,,。,,,,,,。(V2V),;,,。4,,,,。,,、—/—,、,。ApplicationsandKeyTechnologiesinITSAbstractThisarticleintroducesthetypicalapplicationscenariosofintelligenttransportationsystems(ITS),andthenanalyzesthekeytechnologiesinITSaccordingtothenetworkarchitectureoftheinternetofthings(IoT).Developmenttrendsofthesetechnologiesareproposedintheend.Keywordsinternetofthings,ITS,ETC,DSRC(:2011-08-11)NETWORKTECHNOLOGY“”,(),“”,“”、“”、“”、“”。,“”,,,:、、、、X,。··