T型远引左转交叉渠划方案的Vissim仿真分析

Vissim Simulation Analysis of T-intersections Indirect Left U-turn Cross Drainage Scheme

针对左转车流影响交叉口通行能力的现象,选取左转视距受限的主干路-次干路"T"型交叉口为研究对象,提出"主路信控左转"、"主路远引左转"两种组织方案,并通过Vissim仿真软件对两种方案中交叉口延误、左转延误、左转运行时间等参数的对比分析,得出"主路远引左转"在T型交叉口的可行性。

Considering the influence of left turn traffic at an intersection, the T-intersection is selected as the research obje-ct including a trunk road and a secondary road, and “the main road signal control left”and“the main road indirect left U-tur-n”two organization methods are put forward. The main road indirect left U-turn is feasible , through comparative analysis of intersection delay、turn-left delay and running time in the two programs based on Vissim simulation.