城市路口倒计时显示对驾驶行为的影响分析

倒计时显示可以提醒驾驶员在信号灯灯色发生改变的时间、在“停止”和“通过”两者间作出合适的选择。驾驶员和行人的问卷调查中超过85％的驾驶员和行人都愿意选择有倒计时显示的信号控制方式，并且认为有倒计时显示的路VI更安全。对北京市方庄某-4支交叉路口进行了倒计时显示安装前后各1周的驾驶行为录像观测。统计分析发现，安装了倒计时显示后，路口的交通量与没安装倒计时的交通量十分接近；相比于没安装倒计时装置驾驶员在黄灯通过行为和闯红灯行为都有显著降低。

Effects of Countdown Signal at Urban Intersection on Driving Behaviors

Countdown signal can be used to remind drivers during the signal change and it can help them make appropriate decision between stopping and crossing.From the results of field survey,more than 85% of the drivers and pedestrians choose countdown signal and consider the intersection with countdown signal safer than the one without it.A four-leg intersection in Fangzhuang District,Beijing,was studied by virtue of video recorders.The study analyzed the driver behavior for seven days before and after installing t...