车道占用状态下城市道路通行能力的研究

Research of Urban Road Traffic Capacity Based on the Lane Occupancy

通过对安徽省合肥市长江路与金寨路交口事故发生至撤离期间的车辆行驶情况进行统计,建立了实际道路通行能力、单车道路段当量排队长度、多元线性回归、车流量差值等模型,得到事故期间实际道路通行能力的变化过程。结果表明:不同车道横断面均呈现大型车比例对事故所处横断面实际通行能力的影响最大,二者呈反比关系;不同车道横断面实际通行能力变化不同,呈周期性变化或先急后缓非线性下降;交通事故所影响的路段车辆排队长度与事故横断面实际通行能力成反比;事故持续时间及路段上游车流量与车辆排队长度存在同方向变动关系。

In view of the road occupied effect on city road capacity, through statistics of vehicle during the evacuation of accident in the Changjiang Road and Jinzhai Road intersection in the city of Hefei,this paper established the actual road traffic capacity, one lane road equivalent queue length, multiple linear regression, the inverse solution model,all of this has obtained the process of actual road capacity change during an accident, different lanes cross-sectional differences in capacity.