基于停车视距的干线公路团雾预警等级划分

Classification of fog warning grade of main highway based on stopping sight distance

为了解决由团雾引起的高速公路行车安全问题,基于停车视距这一基础指标,考虑团雾天气对停车视距的影响,通过对团雾天气中不同能见度下的安全车距进行计算,根据计算结果对团雾的不同浓度等级进行分级。从而解决因团雾较“浓”、能见度较低、区域性较强而引起的团雾预测困难问题,为高速公路的行车安全提供保障,降低由于突遇团雾视线变差而导致同车道前后车追尾事故发生率。

In order to solve the safety problems of expressway driving caused by fog,based on the basic index of stopping sight distance,the safe distance between vehicles under different visibility in fog weather was calculated,and the different concentration levels of fog were graded according to the calculation results.Thus,it can solve the difficult problem of fog prediction caused by dense fog,low visibility and strong regional fog,and provide guarantee for the safety of expressway driving,and reduce the accident rate of rear and rear car rear-end accident caused by sudden fog sight deterioration in the same lane.