For a city road or highway that needs speed limit management, if speed measurement equipment is installed at several fixed points, it will act as a better deterrent to the driver in a short period of time. But as drivers become familiar with road monitoring points, they will enter the monitoring point when the speed down, leaving the area will still speed violations, to traffic safety risks.
This system suggests the way to install the dotted dotted point on the side of the road, which can solve such problems. On the side of the road that controls the road, several cabinets are installed at a certain distance. When used, users place several sets of HD mobile electronic police in these cabinets at will. The driver drove into the road without knowing which cabinet had an electronic police (real point) and which cabinet did not have an electronic police (dotting point), so he did not dare to speed in.