基于停车视距的高速公路雨天行车安全车速研究

Research on Driving Safe Speed at Rain on Freeway Based on Stop Apparent Distance

考虑低能见度及路面附着系数减小的情况,研究了高速公路雨天的安全车速。从跟车状态下停车过程出发,根据不同的水膜厚度得出其对应的附着系数,进行了基于AASHTO停车视距模型的高速公路安全车速计算。并应用于湖北省黄黄高速公路雨天交通管理措施,供相关技术人员参考。

According to reduction of visibility and adhesion, the paper researches safe driving speed on freeway at the rain. Proceed from stop process under the following state, in response to obtained corresponding adhession coefficient from different rain water depth, it calculates also safe driving speed on freeway, based on the AASHTO model of stop apparent distance. Finally the measures for traffic control at the rain have been gotten, which may provide reference for tecnicians.