Based on GIS.doc

Based on GIS \ GPS \ GPRS \ RFID technology traffic congestion warning and Model Chenlei The jiangsu university of China Abstract: This paper innovative RFID-based dynamic access, GPRS (General Packet Radio Service, General Packet Radio Service) two-way communication, GPS real-time positioning and GIS path tracking system architecture of the dynamic traffic conditions through information flow, data flow and timely mutual transmission and accurate identification of different vehicles and get the road network in the vehicles location, speed, direction and a series of information, through a summary of the above information and combining GIS geographic information system to obtain city status in real-time traffic information, while changing previous single model to predict traffic way to BP-GM hybrid model of efficient and accurate prediction of the future period of time within the various sections of the road network traffic and congestion flow rate through out quantitative research results coming period road the road network traffic conditions, traffic information and timely feedback to the operation of the vehicle around and divert institutions, in order to achieve the travel warning and vehicle traffic congestion dynamic route guidance, to prevent the occurrence of massive congestion. Keywords: congestion warning, BP-GM hybrid model, access flow rate 1.Background First, as the economic and social development and the constant expansion of the city, urban traffic congestion problems to the fore. Today its existence has seriously affected the socio-economic development, At the same time, many of the urban area of ??our country began to expand, increasing road construction, increasing vehicle travel, urban transport has entered a stage of rapid development. However, many cities in urban traffic began to emerge many cities in China generally encountered in the development process of urban traffic congestion. Gradually expand the size of cities, transportation and hea