The traffic control department said that the faster the driving speed, the more attention the driver needs, and the easier it is for the driver to get tired. Nevertheless, the traffic management department should also consider it necessary to adjust the speed limit.

Adjusting the speed limit, in France, on a road that is not so wide and close to the school, driving at a speed of 50 kilometers per hour can be regarded as a crime, but it is actually legal, while if the speed exceeds 130 kilometers per hour on a spacious and flat expressway during the day, it should be said that it is innocent, but it is actually illegal.