关键词: 交通拥堵；VISSIM 仿真；信号交叉口；渠化设计；信号配时

Abstract: Through the morning rush hour traffic survey at the intersection of Guangqiao Road and Zhenyuan Road in Shenzhen, a VISSIM simulation model of the current situation was established, and congestion at signalized intersections were found. From the two aspects of intersection channelization design and signal timing, the improvement plan is proposed, and the three evaluation indicators of the average queuing length, the maximum queuing length and the average delay time of each entrance lane at the intersection before and after the improvement are compared and analyzed using VISSIM simulation. The results show that the improved plan shortens the length of the entrance lane queue, reduces the delay time, and improves the traffic efficiency of the intersection, which proves the rationality and effectiveness of the improved plan.

Key words: Traffic jam; VISSIM simulation; Signalized intersection; Canalization design; Signal timing