There are many cameras and recording probes at traffic intersections. How to identify the role of the cameras?

Camera recording probes at traffic intersections can be roughly divided into four types: ① Traffic surveillance cameras that capture violations such as running red lights, driving in reverse, illegal lane changes, etc.; ② Surveillance cameras that specifically capture illegal parking; ③ Speed ??measurement cameras Electronic induction surveillance cameras at various points; ④Skynet surveillance cameras of the public security system.

The first type of surveillance cameras are located at fixed locations at major intersections, before and after the traffic lights. The position of this type of surveillance camera is generally fixed. Through the cooperation of multiple cameras, the traffic conditions of vehicles in the corresponding lane can be better captured. Therefore, it is shot against a fixed lane, so after adjusting the position during installation, the position will not be adjusted again. Therefore, when you see this type of traffic lights at intersections, especially before and after traffic lights, you should pay attention to whether you have crossed the line or failed to follow the traffic light instructions.

On the streets, those who know how to Surveillance cameras that rotate their heads and turn are generally cameras used to capture illegal parking: in no-parking areas, a camera that can rotate can cover parking dynamics within a 270° or even 360° camera range. In this way, cameras can be saved and the parking situation on the road can be more fully controlled. Moreover, if the camera rotates at a certain frequency and the vehicle still stays in the camera surveillance after multiple rotations, then it is undoubtedly illegal parking and not a short stay?

And the traffic test camera, It's very easy to distinguish, because there must be a warm reminder around this camera, with a slogan like "Speed ??Measurement Ahead", with speed limit information written in a red circle on a white background. For example, in the picture above, the speed limit is 35km/h. If it is exceeded, it will be recognized as speeding when it appears on the camera at a certain frame rate.

The background will implement corresponding speeding penalties based on the detected information.

Basically, there are corresponding information prompts around the second and third types of cameras.

There is also the last type of camera. There will be no other signal lights around it, and there will be no prompts. Although it is at an intersection, it seems to have nothing to do with us.

Actually, this is not a camera of the traffic system, but of the public security system. It is responsible for monitoring road dynamics and can be called when necessary: ??for example, if a child is lost, you can use this type of camera to check whether Appeared in this area, what was the trend like, and where did it end up?