平行流交叉口行人过街控制策略研究

为解决平行流交叉口行人与机动车冲突问题，考虑行人与机动车在冲突点为寻找间隙穿越的交替穿插的抢行博弈过程，重新设计行人过街信号相位方案，提出人车搭接相位行人过街模式；考虑行人专用相位过街模式，给出两种行人过街模式的信号控制策略；构建优化模型，并对模型等价变换，降低计算复杂度.结果显示：常规交叉口处于高饱和状态时，两种行人过街模式下平行流交叉口分别降低了73.8%、50.3%的车均延误，故人车搭接相位过街模式效益更优；人车搭接相位过街模式与不考虑行人过街模式相比，交叉口车均延误仅增加 0.6~3.8 s? pcu-1 .研究成果可为平行流交叉口行人信号配时提供理论依据.

Pedestrian Crossing Control Strategy for Parallel Flow Intersection

This study focuses on solving the conflict between pedestrians and motor vehicles at parallel flow intersections and considers the alternate scramble game process between pedestrians and motor vehicles at the conflict point to find the gap crossing. The study redesigns the pedestrian crossing signal phase scheme, develops a pedestrian crossing mode with pedestrian vehicle overlapping phase, and then proposes two types of signal control strategies for pedestrian crossings with the consideration of the pedestrian exclusive phase crossing mode. The optimization model is developed for these two strategies and transformed equivalently to reduce the computational complexity. The results indicate that at the normal intersection in highly saturated state, the vehicle delay of parallel flow intersection is reduced by 73.8% and 50.3% respectively under the two pedestrian crossing modes, which shows more benefit from the pedestrian vehicle overlapping phases. Compared with the situation without pedestrian crossings, the vehicle delay caused by pedestrian vehicle overlapping phases only increases by 0.6 to 3.8 seconds per vehicle. The research results serve as a theoretical basis for pedestrian signal timing at parallel flow intersections.