Problem 2: Pakistan fast cars in the walk through the process, if fast car hit the wall how do Pakistan?

Song Youzhou: For example, it is in the left lane across the two roads, it means that the two way bus only allows two cars and fast way, so each section is limited Gaolou Men planes, the cart is limited shelf Gaolou Men not allowed to come up, only to go on the right two lanes, which is a high security measures to prevent. Another bus had ultrasound within our own walls at a distance too close to where it will alarm notification. Another way, we plan to wall in the bus we do some semi-closed, is close to bus out of a barrier wall, so the bus between the station to that station, high-speed time is closed, you had better start or progress if station, speed down the entrance at the time, so to avoid the car between the virtually scratch bus, bus collision probability is also reduced.