【摘要】 在交通流BJH模型基础上,考虑前车刹车状态对车流行为的影响,提出改进后的交通流BJH模型.模拟结果表明,在道路车辆密集程度不太大时,前车减速刹车是时断时续的影响车流;当道路车辆密集时,密度超过转捩点密度时,平均车间距小于安全车距,驾驶员对前车刹车的行为将作出刹车反应,这样导致了交通阻塞.计算机数值模拟反映了接近实测的交通通行能力以及交通的崩溃.更多还原

【Abstract】 Based on the BJH model of traffic flow,a modified BJH model by considering the effects of the braking state of vehicle ahead on traffic flow is proposed.It has been found from simulation that the effects of the braking state of vehicle ahead on traffic flow are intermittent when the road vehicles are not dense.However,when the road vehicles are dense,the density exceeds the turning point,the everage gap between vehicles is smaller than the safe distance,drivers brake as the reaction to the braking behavior of vehicle ahead,would lead to traffic jam.Moreover,the model is able to reproduce the complicated behavior of the real traffic,such as traffic breakdown.更多还原