城市道路信号交叉口车道动态平衡性研究

为了定量描述城市道路信号交叉口进、出口车道的动态平衡性，引入指标动态平衡度。本文对各相住下的进口车道组的交通量与出口车道组的通行能力进行计算，它们之比即为动态平衡度，借助于VISSIM仿真软件量化指标，确定评价标准。最后以南京市北京东路与丹凤街交叉口为例对其各相位下的车道动态平衡性进行评价。结果表明：应用动态平衡度对城市道路信号交叉口车道动态平衡性的评价是可行的，借助于车道动态平衡度可以直观地分析交叉口的车道划分及车道功能设计能否满足交通需求，达到高效利用交叉口时空资源的目的。

Study on the Dynamic Balance of Lanes at Urban Road Signal Intersection

In order to quantitatively describe the signal intersection, the evaluation index of paper calculated the maximum traffic volume dy of dyn amic balance of lanes at a urban road namlc the a balance degree was introduced. This pproach lane group and the capacity of the exited lane group under every signal phase. The ratio of them is the dynamic balance degree Then the index was quantified and the assessment criterion was determined with VISSIM.Take the East Road-Danfeng Street intersection of Nanjing as an example to calculate thedynamic degree under each signal phase. The results showed that the index dynamic balance degree can effectively evaluate the balance of lanes, from which we can directly see whether the lane division and the function designation of an intersection can reach the goal that fully use the space-time resources of an intersection.