允许两辆车驶入的避险车道设置

Establishment of Truck Escape Ramp Allowing Two Vehicles Entering

摘要:

针对允许两辆车驶入的避险车道(TER)，将先后驶入制动床的两辆车的停驶位置抽象为相互独立事件，建立了两辆车均能成功驶入避险车道的概率模型.基于仿真数据的研究结果表明：主线为直线时两辆车成功驶入避险车道的概率高于主线为平曲线时;即使主线为直线，制动床宽度为车辆宽度的5倍，两辆车均能成功驶入制动床的概率也不超过15%，这说明仅通过拓宽制动床宽度而不设置满足长度要求的引道，仍不能保证第二辆车成功驶入制动床.

Abstract:

For truck escape ramp (TER) allowing two vehicles to enter，we abstract the stopping positions of the two vehicles that have entered TER one after another as independent events, and establish a probabilistic model that both vehicles can successfully enter TER. The results based on simulation data show that: when the mainline is straight, the probability that the two vehicles successfully enter TER is higher than when the mainline is curved. Even if the mainline is straight and the arrest bed width is 5 times of the vehicle width, the probability of the two vehicles successfully entering TER is still no more than 15%. It indicates that it is impossible to ensure the second vehicle entering TER successfully by only widening the width of the arrest bed without setting the required length of approach road.