基于效用理论的单进口放行方式下直左合用车道设计

Design of Straight-Left Shared Lanes under Single Import Release Mode Based on Utility Theory

为了均衡同一进口内直行和左转车流的饱和度,使单进口放行方式的通行效率和时空资源利用效率更高,阐述了基于效用理论与车流临界模型的直左合用车道的设计方法,根据对山东济南无影山中路-黄岗路交叉口的实地调查,运用Webster延误模型分别来求单进口放行方式下设置直左合用车道和没有设置直左合用车道情形下的总延误。结果表明:单进口放行方式下设置了直左合用车道放行效果更好。

In order to balance the saturation of straight and turn left traffic flow within the same import,and to improve the passable and space-time resource utilization efficiency under single import release mode,the design of the straight-left shared lanes based on utility theory and traffic flow critical model was expounded. According to the field survey of intersection at Wuying Shan road and Huanggang road in Ji＇nan of Shandong province,Webster delay model was used to solve the total delay with and without setting straight-left shared lanes under single import release mode. The results show that： the release effect after setting straight-left shared lanes under single import release mode is better.