道路交织路段交通流优化控制仿真研究

Research on Traffic Flow Optimal Control Simulation of Interference Section

交通工具多样、混行、交织演化成为道路交织路段交通安全问题的主要诱因和道路通行效率下降的瓶颈。传统的交织路段交通流优化控制偏向宏观控制,较少依托微观仿真模型,并且已有的微观仿真模型对于反映交织路段复杂的非线性关系存在一定差距。因此,建立高准确度的道路交织路段交通流微观仿真模型是进行交通流优化控制、保证交通安全的基础。综合考虑社会力和元胞自动机的优缺点,建立一个非机动车和行人需要横穿马路的多交通方式高密度交织路段的混合交通流模型,以中学门口道路区域放学期间交通流为例,对交织区的多状态交通流进行仿真,提出交通组织方案,并对不同交通组织方案下道路实际通行能力和平均过马路时间的影响进行实验分析。结果表明针对高密度混合交织路段的交通组织优化具有较好的适用性,并对不同交通需求施加不同策略,可保证交通安全、抑制交通拥堵从而达到提高道路通行效率目的。

A mixed traffic flow model of high density interference road section with multiple transportation modes is established when non-motor vehicles and pedestrians need to cross the road. By using a middle school＇ s gate dur- ing student departure as an example, the multi-state traffic flow is simulated. Different traffic organization schemes are proposed and the effects of different traffic organization schemes on road traffic volume and crossing road time are analyzed by experiment. The results show that the applicability of traffic organization optimization for high density mixed interference road section is better than that of other modes, the traffic safety can be ensured, the traffic jams phenomena can be suppressed, and then the goal of enhancing tile road traffic efficiency can be realized by inputting the different strategies under different traffic demand.