Abstract: To improve the utilization rate of green light time of signalized intersections in the connected environment, a coordinated optimization control method for speed and signal timing of connected vehicles at single point signalized intersections was proposed, which was according to the interactive information such as vehicle speed, location, and signal status between connected vehicles and traffic facilities. The proposed method used the fleet discrete theory to predict the arrival rate of vehicles at intersections and then optimized the intersection signal timing according to the predicted results. On this basis, minimizing the total number of queued vehicles within the cycle was taken as the optimization goal. The speed of each connected vehicle passing through the intersection was judged, and the optimal driving speed of the connected vehicle was solved according to the vehicle numbering order, achieving effective coordination between speed guidance and intersection signal control. MATLAB software was used to simulate and analyze the proposed model. Research results show that after the collaborative optimization of signal optimization and speed guidance, the proposed speed guidance and signal collaborative control method can increase the number of vehicles passing through the intersection at the same time, reduce vehicle delays, and effectively improve the traffic efficiency of the intersection.

Key words: traffic and transportation engineering; connected environment; signalized intersection; vehicle-road collaboration; traffic control; speed guidance

摘要： 网联环境下，为了提升信号交叉口绿灯利用效率，根据网联车与交通设施之间交互的车辆速度、位置及信号状态信息，提出一种单点信号交叉口网联车速度与信号配时协同优化控制方法。该方法基于车队离散理论，预测交叉口车辆到达率并根据预测结果优化交叉口信号配时。在此基础上，以周期内总排队车辆数最小为优化目标，对每辆网联车通过交叉口速度进行判断，按照车辆编号次序求解网联车的最佳行驶速度，实现速度引导与交叉口信号控制有效协调。采用MATLAB软件对模型进行仿真分析。研究结果表明，经信号优化与速度引导协同优化后，提出的速度引导与信号协同控制方法能够在相同时间内增加通过交叉口的车辆数，减少车辆延误，并有效提升交叉口交通效率。

关键词: 交通运输工程；网联环境；信号交叉口；车路协同；交通控制；速度引导