Discussion on Related Problems of Highway Stopping Sight Distance
As one of the most important safety indicators on highways,stopping sight distance plays a crucial role in ensuring vehicle safety and operational efficiency.In order to reasonably determine the stopping sight distance of highways and reduce the construction cost of highways,this paper discusses the parameter values of traditional calculation models for stopping sight distance of highways.The analysis results show that there is a large surplus space in the current standard stopping sight distance values.At the same time,in response to the shortcomings of current regulations,the theory of vehicle braking deceleration was introduced,and the stopping sight distance values were calculated for three working conditions:comfortable braking,comfortable emergency braking,and emergency braking.The results show that the values under comfortable braking conditions are basically consistent with the current regulations in China,while the values under emergency braking conditions(a=4.5 m/s2,t=1.5 s)are much smaller than the current regulations.This value is recommended to be used as the minimum stopping sight distance,which can meet the needs of safe driving on complex road sections and reduce engineering costs.
万方数据
维普
