信号交叉口行人过街时间模型

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。

Model of pedestrians crossing time at signalized intersection

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.