Abstract: The signal coordination control method was studied based on the traffic flow path according to the real-time traffic flow data of the road network. Considering the discreteness of vehicle fleet, the concept of path coordination degree was proposed. The coordination main path was selected dynamically according to the path coordination degree and the flow disequilibrium coefficient. According to the traffic wave theory, the dissipation time of red light queuing was calculated. A two-node correlation model and a multi-node correlation model based on the coordinated path were established by comprehensively considering the path traffic volume, distance and queue length at red light. Finally, the simulation test was carried out. Compared with the road segment correlation model and Maxband model, the sensitivity of parameters was analyzed from three aspects, namely, path flow fluctuation, queue length and saturation. The results show that the proposed model can determine the coordination scheme according to the dynamic path traffic volume and can improve the operation index of road network accordingly.

Key words: traffic engineering, traffic control, path coordination degree, correlation model, Vissim simulation

摘要： 根据路网实时运行的交通数据，基于车流路径研究信号协调控制方法。考虑车队离散性，提出路径可协调度的概念；根据路径可协调度以及流量不均衡系数动态选择协调主路径；根据交通波理论计算红灯排队消散时间；综合考虑路径流量、距离以及红灯时刻排队长度，建立基于协调路径的两节点关联性模型和多节点关联性模型。最后进行仿真实验，与路段关联度模型以及Maxband模型对比，并从路径流量波动、排队长度以及饱和度等3个方面分析了参数的敏感性。结果表明：本模型能够根据动态的路径流量确定协调方案，并使路网的运行指标得到相应改善。

关键词: 交通工程, 交通控制, 路径可协调度, 关联性模型, Vissim仿真