关键词: 公路运输, 交通流, 元胞自动机模型, 交通事故, 浓雾

Abstract:

With fog environment，drivers present different driving behaviors compared with normal weather，which may bring security threats to drivers. To ensure traffic security，traffic management department will close highway when heavy fog occurs，which makes people inconvenient. The traditional visual based and vehicle-to-vehicle communication based driving-behavior modes are analyzed firstly. Based on the driving-behavior modes，the traffic flow cellular automaton models are proposed. Simulation results show that vehicle- to- vehicle communication technology can decrease the local compact effect，which can decrease the traffic accident probability effectively. The traffic accident probability with vehicle- to- vehicle communication decreases much in low density. The research results can provide reference to the continue release of highway when heavy fog occurs if the vehicle-to-vehicle communication technology is used.

Key words: highway transportation, traffic flow, cellular automaton model, traffic accident, heavy fog