Abstract: In order to scientifically set the right-turn protective phase of signalized intersection under the detailed rules of comity to pedestrians, the spatial and temporal distribution characteristics of pedestrian-vehicle interaction and two-way pedestrian crossing street were analyzed by the field investigation of several intersections in Beijing. Based on the acceptable gap theory, a delay model of pedestrian-vehicle interaction under the influence of yielding rate and two-way pedestrian crossing street was established. The sensitivity analysis of the parameters in the proposed model was carried out, and the conditions for setting right-turn protective phase were proposed from the perspective of safety and operating efficiency. The results show that when the right-turn vehicle flow is not saturated, the right-turn vehicle flow reaches 100 veh/h, and the two-way pedestrian crossing street flow reaches more than 1700 ped/h, it is appropriate to set the right-turn protective phase. The more pedestrian flow crossing the street, the lower the demand of setting threshold value of right-turn protective phase on vehicle flow. With the increase of vehicle flow, the demand of setting threshold value of right-turn protective phase on pedestrian flow tends to decrease firstly and then increase. The higher vehicle yielding rate, the lower the demand of setting threshold value of right-turn protective phase on flow and the smaller the delay increment after setting right-turn protective phase.

Key words: traffic engineering; comity to pedestrians; right-turn protective phase; traversable gap theory; setting threshold

摘要： 礼让行人细则下为科学设置信号交叉口右转保护型相位，通过对北京市交叉口的实地调研，分析了人车交互行为和双向过街行人的时空分布特性。基于可接受间隙理论，建立了避让率和双向过街行人影响下的人车交互延误模型，并对模型中参数进行灵敏度分析，综合考虑交叉口运行效率和安全性提出了右转保护型相位设置条件。结果表明:右转车流未饱和条件下右转机动车流量达到100 veh/h、双向过街行人流量达到1 700 ped/h以上时，适宜设置右转保护型相位；过街行人流量越多，右转保护型相位设置阈值对机动车流量要求越低；随着车流量的增长，右转保护型相位的设置对行人流量的要求呈先降后升的趋势；机动车避让率越高，设置右转保护型相位对流量的要求越低，设置右转保护型相位后延误增量越小。

关键词: 交通工程；礼让行人；右转保护型相位；可穿越间隙理论；设置阈值