基于VISSIM仿真的交叉口信号配时优化研究

Research on Intersection Signal Timing Optimization Based on VISSIM Simulation

交通拥堵是当今社会的一大问题,而交叉口作为城市交通的重要枢纽,也是最常见的产生交通拥堵的地方之一。为了缓解城市交叉口交通拥堵状况,提高交叉口通行效率,文中以济南市大学路-紫薇路交叉口为研究对象,采用Webster配时方法实现对该交叉口信号配时方案的计算和优化,然后运用VISSIM软件进行仿真,并对比分析优化前后的仿真结果。结果表明,与现方案相比,优化后的方案平均排队长度减少了25.11%,最大排队长度减少了9.28%,延误降低了16.33%,提高了该交叉口的通行效率。

Traffic congestion is a major problem in today's society.As an important hub of urban traffic,intersection is also one of the most common places to produce traffic congestion.In order to alleviate the traffic congestion of urban intersections and improve the traffic efficiency of intersections,this paper takes the intersection of University Road and Ziwei Road in Jinan as the research object,adopts Webster timing method to calculate and optimize the signal timing scheme of the intersection,then uses VISSIM software for simulation,and compares and analyzes the simulation results before and after optimization.The results show that compared with the current scheme,the optimized average queue length is reduced by 25.11%,the maximum queue length is reduced by 9.28%,and the delay is reduced by 16.33%,which improves the traffic efficiency of the intersection.