The first category is the speed camera, which is mostly installed in national highways, expressway and accident-prone sections. So when crossing expressway and the bridge, be sure to pay attention to whether the camera is installed on the shelf and whether its direction is facing the driver. If it flashes a flash at you twice, congratulations, the speeding was caught.

The second type is illegal parking camera, which is generally spherical and easy to identify. Generally set in the city's no parking sections. Of course, you can also capture illegal activities such as retrograde and illegal lane change, so when you see this camera, you must hide far away.

The third category is the Skynet surveillance camera, which is just a surveillance camera and can't take pictures. It is mainly used by the Public Security Bureau to adjust the video to track criminals.

The fourth category is traffic surveillance cameras, which are generally installed on signal poles, do not capture violations and are used to count traffic flow.

Another kind of camera is electronic police, which is used to capture red light running, line pressing, retrograde, occupying non-motor vehicle lanes, not driving in the direction, changing lanes illegally and so on. Because there is no promotion when capturing the rear of the car, it is often impossible to prevent. Generally, they are installed at intersections, and the fill light will flash at high frequency at night. Be honest when you see it.