高速公路出入口回转车道设计

Design of U-turn Lane on Exit and Entrance of Highway

在出入口处增设回转车道,可提高出入口交通安全系数,给驶过出入口的驾驶员更好的解决方案。详述了在高速公路出入口处所设回转车道的设计原理和具体的结构设计方案。通过分析高速公路出口间距,得出回转车道的选位方案,参照高速公路匝道设计方案来标定回转车道设计参数,最后给出了整个回转车道具体的结构设计。

The design of u-turn lanes on exit and entrance will improve the traffic safety and offer a better solution to the drivers passing by. This paper describes in detail the design principles and specific structure design scheme of turning lanes located at the highway exit and entrance. Through analyses of the distance between highway exits, the position scheme of u-turn lanes can be worked out and their design parameters can be calibrated with reference to the ramp design. Finally, it presents the concrete structure design of the whole uturn lane.