Establishment of Truck Escape Ramp Allowing Two Vehicles Entering

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.

Key words:road engineering; truck escape ramp(TER); probability model; driving simulation; two vehicles entering; approach road