关键词: 交通工程, 交叉口延误, 交通波, 信号交叉口, 交通设计

Abstract:

Intersection delay is an important evaluation index for traffic design and signal optimization. To overcome the demerit that the traditional delay calculation method considers about the isolated intersection, a new delay model is built by taking into the up- stream and down- stream intersections considerations. The model is based on the traffic-wave theory, and it synthesized analyzes the main influential parameters of upstream and down-stream intersections, such as phases, splits, movement volume, link length, offset, etc. A polygon formed by spatiotemporal coordinates of the queues rears is constructed by capturing the evolution of queue phase by phase, which area is used to calculate the stop delay of the object lane-group of downstream intersection. The intersection signal control delay can be counted by adding stop delay and acceleration-deceleration delay. Through a case study comparing with VISSIM and SYNCHRO software, it is found that the model is reliable for intersection delay.

Key words: traffic engineering, intersection delay, traffic-wave theory, signalized intersection, traffic design