关键词: 自适应信号调度 离散事件辨识 交通流量优先级 物流配送

Abstract:

The scheduling control at crossroad is a hot topic. Because of the distribution and uncertainty of traffic flow, the situation of congestion can not b e avoided completely and the transportation capability can not be improved for a long time. A self-adaptive signal scheduling algorithm is proposed in t  he paper. Traffic flow priorities in different paths are analyzed at the same time. The arriving, waiting and leaving of vehicles can be seen as the dif  ferent states of discrete events. The identification of the status of every vehicle can be realized by the theory of queueing. The number of vehicles in  every path can be gained by identification. An object function for optimizing traffic flow is presented in the paper. The restriction condition is also  given. In the algorithm, traffic signal cycles can be adjusted according to the comparison results of real-time traffic flow and saturation traffic flo    w in the corresponding directions. Analysis shows the throughput in the total road network is enhanced and the loath utility is improved.

Key words: self-adaptive signal scheduling, discrete event identification, traffic flow priority, logistics