绿闪信号作用下交叉口机动车的决策行为

Driver behavior at urban intersection under flashing green effect

为了解析交叉口绿闪信号对于机动车驾驶者驾驶行为的影响,基于交叉口的视频数据,应用摄影测量的方法,采集了绿闪信号启亮时车辆距停止线的距离、行驶速度以及驾驶者在停止线前采取的通过或停车的决策行为,应用Logistic回归方法建立了决策模型,检验证明了该模型用于描述驾驶者的决策行为具有较高的精度.通过分析不同速度情形下驾驶者的决策行为表明：当绿闪信号启亮时车辆距离停止线较近或者较远时,驾驶者的决策行为具有较高的一致性;当其离停止线距离为40~45 m时,不同驾驶者的决策行为差异较大.

In order to analyze the effect of flashing green on driver behavior,the distances from stop line,the traveling speeds and the corresponding decisions of drivers were collected through video taping and data procession based on photogrammetry. The driver decision models were developed by Logistic regression,and the accuracy and effectivity of the model results were verified. The driver decision analysis for different speeds indicates that the decisions are consistent when the distances from the stop line are near and far. When the distance is from 40 to 45 m,the driver decisions are obviously different.