
The intelligent transportation holds the very important status in the urban road transportation system.Aiming at urban traffic characteristic,the urban transportation plan,control,monitor and inducement are carried out,which contributes to improve the urban traffic road network efficiency and raises city people's living standard.The vehicles positioning system is one of important support technologies for intelligent transportation.The correct positioning of vehicles which are considered as the mobile nodes can carry on the effective operation of the urban transportation state observation and control.Compared to the wired sensor pattern,the detection and control of the wireless sensor networks have considerable advantages in the equipment cost, deployment environment,maintenance and upgrade,stabilization and reliability,and so on.Therefore,the paper study the method of vehicle location in wireless sensor networks,and carry out the wireless sensor network node hardware and software development which on the area of urban road traffic-oriented applications.