跟随车安全距离的分析

Safety distance about car-following

通过对驾驶员的反应能力的量化、速度判断过程的分析和对诸如饮酒、服药、电话干扰及疲劳驾驶等外部因素影响下驾驶员行为与跟随车与引导车行驶一致性的研究 ,计算与分析行车时的安全距离 ,寻求既可避免发生追尾碰撞事故 ,又不影响道路通行能力的安全距离恰当值 :当驾驶员和车辆状况良好时 ,行车距离保持在速度 (以 m/s为单位 )的 1 /2以上时 ,才可能安全 ;当驾驶员和车辆状况不良时 ,行车距离保持在速度的二倍以上时 ,才安全。

It is pointed out that the traffic accident mostly result in improper driver's action.The driver's capability of response time and speed estimation are studied,and driving performance by car following in traffic is investigated,in order to calculate the appropriate driving safety distance,which assures that neither the rear end collision occurs nor road capacity is affected.If the following distance is S(m),and the following vehicle's velocity is V(m/s),the study results show that when S>V/2,the following is safety under the good condition of driver and vehicle,when S>2V,the following is safety under the poor operation of driver and vehicle.