车辆停靠，功率和天线解决方案。
所有西行车辆停靠在一个设立的检查站接受检查，没有瓜类水果的才允许通过检查站。
All westbound vehicles are stopped at an established checkpoint and no cucurbit fruits are allowed past the checkpoint.
当车辆停靠时，采用超声波实时监测后方车辆与该车的距离，并由微型计算机对打开车门的动作是否存在危险进行判断。
When the vehicle parks, distance from a vehicle behind to the vehicle is monitored in real time by ultrasonic, and a microcomputer judges whether the action of opening the vehicle door is safe or not.
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