信控交叉口掉头车道交通设计研究

Research on Traffic Design of U-turn Lane at Signalized Intersection

掉头车道设置策略对交叉口影响较大,易造成掉头车辆通行效率差、影响通行安全等问题;合理设置掉头车道位置和形式,既能提高交叉口通行能力和服务水平,又能提高交通路网的通行效率和安全.本文对掉头车道的设置依据、设计形式、几何设计参数等进行对比分析,对常见的几种掉头方案利弊进行总结归纳,并利用VISSIM仿真软件对不同形式的掉头方案通行状态进行模拟验证,论证方案设置的适用性及合理性.

The setting strategy of U-turn lane has a great impact on the intersection,which is easy to cause poor traffic efficiency of U-turn vehicles and affect traffic safety.Reasonably setting the location and form of U-turn lane can not only improve the traffic capacity and service level of intersection,but also improve the traffic efficiency and safety of traffic network.This paper optimizes the setting basis,design form and geometric design parameters of U-turn lane,summarizes and analyzes the problems existing in several common U-turn schemes,and uses VISSIM simulation software to simulate and verify the traffic status of different forms of U-turn schemes,so as to prove the applicability anrda tionality of scheme setting.