信号交叉口不同走向行人延误的比较

在西安市,对信号交叉口不同走向行人延误进行了实地研究。研究包括两部分,第1部分仅在一条人行横道上进行,信号灯周期分为13个分相位;第2部分涉及13条人行横道,但信号灯周期仅分为绿灯期和非绿灯期。研究表明,在西安市的信号交叉口,不同走向行人都有行人到达率不均匀、绿灯期到达行人也可能有延误、非绿灯期到达行人闯红灯比例高、闯红灯行人仍可能有延误等特点,总平均延误也基本相同,只是平均延误和到达分相位关系有显著差异。

Comparison of Pedestrian Delays Walking in Different Directions at Signalized Intersections

A field study on the delays of pedestrians walking in different directions at signalized intersections was conducted in Xi'an.The field study included two parts.Part I was conducted at only one crosswalk,and the signal cycle was divided into 13 subphases.Part II was conducted at 13 crosswalks,but the signal cycles were divided into only green phases and non-green phases.The study indicated that for pedestrians walking in different directions at signalized intersections in Xi'an,pedestrian arrival rates were not uniform throughout cycles,pedestrians arriving during green phases might also receive delays,there are more red-light runners arriving during non-green phases,and red-light running pedestrians might still receive delays.The overall average delays were also quite similar,and only the relationships between average delay and arriving subphase were significantly different.