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Information Technology Journal
Year: 2014  |  Volume: 13  |  Issue: 2  |  Page No.: 231 - 241

Study on Cooperative Vehicles Infrastructure Collision Avoidance in Unsignalized Intersection using Simplified Conflict Table

Liu Wenhui, Zhao Jiandong, Zheng Jun and Shen Tong    

Abstract: Focusing on the problem that accidents frequently happen in unsignalized intersection, this study is about the collision avoidance technology in unsignalized intersection based on cooperative vehicles infrastructure technology. First, a simplified conflict table model is established to solve the problem that the traditional conflict table algorithm has so many conflict points which make it difficult to implement and the confluence conflict in simplified model is resolved. Then, the virtual traffic light mechanism is introduced and the fuzzy control model of intersection collision avoidance is constructed using the traffic intensities of green and red phase as input and the extension time of green phase as output. Finally, based on the technology of RFID and Zigbee, the vehicle-road-center intelligent cooperative control platform is built and the algorithm validation is conducted on the platform. The result shows that the algorithm can effectively prevent the occurrence of traffic crashes in unsignalized intersection.

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