无信号公路平交口次路进口道机动车运行研究

Study on Motor Vehicle Operation on Minor Road Approach at Non-signalized At-grade Intersection of Highways

分析了次要道路进口道机动车辆的运行特征,运用统计学方法研究了影响次要道路进口道机动车辆速度变化的各种因素.提出和验证了理论分析,构建了预测模型,探讨了其对交通安全的潜在影响,并提出改善措施.研究结果表明:次要道路机动车辆在由路段进入次要道路的进口道时进行了减速;小客车驾驶人倾向于采取更剧烈的刹车.随着主要道路平均车头时距的减小,次要道路进口道机动车辆的减速度增加.当次要道路的机动车辆以较高的速度进入交叉口进口道时,将倾向于采取猛烈的减速操作.

The paper has analyzed the characteristics of motor vehicle operation on minor road approach systematically,and has studied various factors affecting speed variance of motor vehicles on minor road approach,using statistical methods.The paper has proposed and verified theoretical analyses,set up forecast models,discussed the potential impacts upon traffic safety and provided improvement methods.The results of the paper indicated that motor vehicles decreased when moving onto minor road approach from minor road segment and drivers of small passenger vehicles tended to brake more harshly.With the decreasing of average time headway of major road vehicles,deceleration of motor vehicles on minor road approach increased.When motor vehicles on minor road entered intersection approach with higher speeds,more violent deceleration operations tended to be observed.