信号交叉口行人使用手机对其过街行为和安全的影响（英文）

Influences of Mobile Phone Use of Pedestrians on Street-crossing Behaviors and Safety at Signalized Intersections

针对信号交叉口处行人使用手机对其安全产生不利影响的问题,以武汉市9个信号交叉口的实测数据为基础,对行人使用与不使用手机情况下的过街行为与安全性差异进行统计分析。以往的研究中,评价行人安全多通过简单的对比分析,很少有量化的参数依据;针对行人使用手机对过街安全的影响,以人车冲突为评价指标,建立了基于有序概率(OP)的模型,可以更好地量化评价与预测信号交叉口处的行人安全。结果表明,有11个因素与人车冲突显著相关,包括行人年龄、使用手机方式、过街速度、行人是否与他人结伴过街、瞭望次数、闯红灯与否、车道数、上游车道左转流量、上游车道右转流量、进口道右转流量和信号周期。其中,使用手机会增加人车冲突的概率:在双向2,4,5,6和7车道上,过街时打电话行人的人均冲突分别是不使用手机行人的3.56,3.42,3.33,3.29和3.00倍;看屏幕行人的人均冲突分别是不使用手机行人的4.78,4.17,3.80,3.59和3.30倍;而听音乐行人和不使用手机行人之间的人均冲突并没有明显差异。

In order to analyze negative influences of mobile phone use of pedestrians at signalized intersections, a statistical analysis is used to compare differences of street-crossing behaviors between use mobile phones or not. Data of nine signalized intersections in Wuhan, China is collected by filed investigations. Previous studies evaluate pedestrian safety mostly by simple comparative analysis, and there are few quantitative parameters. Therefore, this paper focused on impacts of use mobile phones on pedestrians safety, pedestrian-vehicle conflict is used as an evaluation index, then a model based on ordered probit(OP) is developed, which is better to quantitatively evaluate and forecast pedestrian safety at signalized intersections. The results show that there are 11 factors significantly relate to pedestrian-vehicle conflicts, including pedestrian age, habit of mobile phone use, speed of street-crossing, crossing with others or not, times of looking left and right, running the red light or not, number of vehicle lanes, volume of left-turning traffic passing through upstream lanes, volume of right-turning traffic passing through upstream lanes, volume of right-turning traffic passing through approaching lanes, and signal cycle. Furthermore, mobile phone use increases possibility of conflict: at two-way 2, 4, 5, 6 and 7 lanes, average conflicts of pedestrians who making phone calls are 3.56, 3.42, 3.33, 3.29, and 3.00 times more than those who do not use mobile phones, respectively;average conflicts of pedestrians who looking at mobile phones are 4.78, 4.17, 3.80, 3.59, and 3.30 times more than those not using mobile phones, respectively. However there is no significant difference in average conflicts of pedestrians who listening to music or not.