信号交叉口行人过街时间模型

Model of pedestrians crossing time at signalized intersection

为了分析交叉口处左转及右转机动车对行人过街交通的干扰和影响,合理控制交叉口行人过街信号,应用交通流冲突理论、间隙接受理论,推导了行人穿越机动车道的人数及等待通行人数,应用统计学方法,建立了行人过街时间模型。实例分析表明,行人平均过街时间的绝对误差及相对误差平均值分别为0 452 7 s和4 15%,85%行人过街时间的绝对误差及相对误差平均值分别为0 206 5 s和1 57%,90%行人过街时间的绝对误差及相对误差平均值分别为0 401 2 s和2 84%,模型计算精度满足要求,有利于行人专用信号相位的设置。

In order to analyze the influence of turning vehicles on pedestrians crossing time, and to provide rational pedestrians control signal, the pedestrians number of crossing and waiting-crossing crosswalk were calculated, by using the conflict theory and the critical-gap accepted theory the models of pedestrians crossing time were built up. The absolute error and relative error of pedestrians crossing average time are respectively 0.452 7 s and 4. 15%, the absolute error and relative error of 85% pedestrians crossing average time are respectively 0. 206 5 s and 1. 57%; the absolute error and relative error of 90% pedestrians crossing average time are respectively 0. 401 2 s and 2. 84%. Computation results show that the precision of the models is high, the models are feasible for the pedestrians phase setting at signalized intersection.