关键词: 交通工程, 配时优化, 多目标规划, 公交优先, 信号控制, 通行延误

Abstract:

The signal timing of signal controlling intersections should consider increasing traffic capacity with the person unit so as to reduce traffic delay per capita. Vehicle parking rate and traffic delay are main relevant factors of cycle length, and decreasing them is the direct purpose of improving the timing design of signal intersections. To aim at minimizing the vehicle parking rate and traffic delay, a timing model of multiobjective planning with dynamic bus priority weights is built. The traditional signal timing plan is improved by signal phase design which is based on transit priority, and the effectiveness of transit priority strategy is ensured. Finally, a real intersection is taken as a simulation prototype in order to verify feasibility of the best cycle timing model and the effectiveness of the improved signal timing plan. The results show that transit priority signal timing optimization strategy based on dynamic weight makes an anticipated good effect on decreasing passengers and vehicles’traveling delay and parking rate.

Key words: traffic engineering, timing optimization, multi-objective programming, transit priority, signal control, traveling delay