行人违章过街变速行为研究

Research on Speed Variation of Pedestrian in Illegal Crossing

为消除行人违章过街给城市交通系统带来的安全隐患,选取了7个信号控制交叉口,结合实地调研,研究了违章行人过街时的速度变化特性.数据显示:人行横道长度、车辆干扰程度、行人瞬时速度及补偿速度等是影响行人违章过街速度变化的主要因素.在此基础上,建立违章过街速度的梯度模型,进一步基于多元Logistic方法构建行人违章过街速度变异性的预测模型.结果表明该模型对违章行人加速行为的预测精度为92.6%,整体预测精度达到80%.

In order to eliminate the potential safety hazard to the urban traffic system caused by pedestrians crossing illegally, seven signalized intersections are selected, and the speed variation characteristics of pedestrians crossing illegally are studied with field investigation. The data show that the length of crosswalk, the degree of vehicle interference, the instantaneous speed of pedestrians and the compensation speed are the main factors affecting the speed change of the pedestrian crossing. On this basis, the gradient model of illegal crossing speed is established. Based on multivariate logistic method, the prediction model of pedestrians speed variability is constructed. The results show that the prediction accuracy of pedestrian acceleration behavior is 92.6%, and the overall prediction accuracy is 80%.