基于Matlab与Vissim联合仿真的交通灯配时策略研究

Research on Traffic Light Timing Strategy Based on Matlab and Vissim

为了解决利用Vissim实现复杂控制策略存在开发成本高、效率低的问题,利用Matlab与Vissim联合仿真技术,进行交通灯配时策略研究。利用Vissim COM接口实现Matlab和Vissim间的信息交换,将Matlab中计算得到的配时结果输入到Vissim中进行仿真;分析输出的延误时间、排队长度等数据指标,评价交通灯配时策略。配时策略实例表明:车流量较大时,基于Webster配时算法原参数计算出的信号周期并不是最佳,对参数进行调整后较大程度提升了交叉路口的整体服务水平。

To solve the problem of high development cost and low efficiency in implementing complex control strategies by using Vissim,the joint simulation technology of Matlab and Vissim was used to study the timing strategy of traffic lights.The timing results calculated in Matlab were entered into Vissim for traffic simulation,and Vissim COM interface was used to exchange information between Matlab and Vissim.The traffic light timing strategy was evaluated by analyzing the output indicators such as delay time and queue length.The timing strategy example shows that when the traffic volume is large,the signal period calculated based on the original parameters of the Webster timing algorithm is not optimal.After adjusting the parameters,the overall service level of the intersection is greatly improved.