高速公路左出口交通标志设置方法研究

对高速公路左出口的产生原因、交通运行状态以及容易引起交通事故的原因进行了详细分析,在此基础上,根据高速公路左出口的容易识别程度,分别给出了高速公路左出口交通标志版面及结构的设计方法。针对规范规定的交通标志提前预告距离不能满足要求且交通标志提前预告距离很难通过计算确定的特点,提出了应用仿真方法来确定交通标志提前预告的距离,给出了仿真的基本流程及数据处理方法。

Research on Traffic Sign Design of Left Exit on Expressway

The form,the traffic state and the reason of traffic accidents at left exit on expressway are analyzed.On this basis the design method of the sign and the structure are put forward according to the visi-bility of the left exit.At the same time because the distance between the first fore notice sign and the start point of the deceleration lane that is defined in standard and criterion is not satisfied to the left exit and is difficult to be calculated,the simulation method are put forward.The basic program o...