Speed measurement is easy to use. Hello, try not to exceed the speed of 1 10 and 100. Drive safely. I wish you a happy life.

According to the Road Traffic Safety Law of the People's Republic of China, the Implementation Regulations of the Road Traffic Safety Law of the People's Republic of China and other relevant laws and regulations; According to the general requirements of accident hidden danger investigation and rectification and ensuring the safety and smoothness of national and provincial roads within the jurisdiction.