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What are the precautions when the car is in use, driving on the expressway and driving? Tell me in detail?

When driving on the expressway, you should pay enough attention to the speed limit and keep enough distance from the car in front. strict

It is forbidden to drive beyond the specified maximum speed limit 120km/h/h, and pay attention to returning to the ramp. Pay attention to the speed limit sign. Speed limit, one

Generally, it shall not exceed 40km/h, and vehicles entering the service area shall be parked in the designated parking space according to regulations.