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Impact of Countdown Pedestrian Signals on Pedestrian Behavior and Perception of Intersection Safety in the District of Columbia

机译：倒计时行人信号对哥伦比亚地区行业行为及交叉路口的感知

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Countdown pedestrian signals (CPS) are increasingly being used as a supplementary device for improving safety at signalized intersections. This research examined the impact of CPS on pedestrian crossing behaviors in the District of Columbia where the display of the remaining time for crossing the intersection begins with the steady "WALK" indication and continues through the flashing DON'T WALK indication. The research also examined pedestrians' perception of safety in crossing intersections equipped with CPS. Data on a number of pedestrian behaviors were collected at the 14 intersections before and after the installation of the CPS through video playback in morning and evening peak periods. The frequency of pedestrian involvement in running, balking, vehicular conflicts, crossing violations, and compliance were among the variables observed. In addition, a survey was conducted at the intersections with high pedestrian traffic to assess pedestrians' perception of safety in relation to the CPS. Statistical analyses were conducted at 5% level of significance to ascertain the significance of changes in variables used as measures of effectiveness. From the results, pedestrians overwhelmingly attributed their increased perception of safety in crossing intersections to the presence of the CPS. However, there was no overwhelming consensus of statistically significant changes in pedestrian behaviors at the intersections as a result of the CPS installations. The results did not indicate any adverse pedestrian behavior caused by CPS installations either. CPS were effectively recognized and understood by pedestrians. More than 80% of the pedestrians surveyed at 7 intersections favored the use of CPS.
机译：倒计时行人信号（CPS）越来越多地被用作用于提高信号交叉口的安全性的补充装置。本研究审查了CPS对哥伦比亚地区的行人交叉行为的影响，其中显示交叉路口的剩余时间始于稳定的“步行”指示，并继续通过闪烁不走路。该研究还审查了行人对交叉口交叉口的安全性的看法。在14个十字路口之前和之后收集了一些行人行为的数据通过在早晨和晚上高峰期的视频播放之前和之后。观察到的跑步，废弃，车辆冲突，交叉违规行为和依从性的行人参与频率。此外，在具有高行程交通的交叉路口进行了调查，以评估行人对与CPS相关安全性的看法。统计分析以5％的重要性进行，以确定随着有效措施所用变量变化的重要性。从结果，行人压倒性地归因于他们对横跨交叉口的安全性提高到CPS的存在。但是，由于CPS安装的结果，没有压倒性地对交叉口行为行为的统计学意义重大变化。结果并未表示由CPS安装引起的任何不利的行人行为。行人有效地认识和理解CPS。超过80％的行人在7个十字路口调查的人有利于使用CPS。

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