Now there are different cameras installed at each intersection. I wonder if you know about these cameras. Today, Xinhao Electronics, the camera module and camera manufacturer, will introduce some common cameras at intersections
1. Spherical camera
It is mainly installed at bus stations, railway stations, and open urban roads. It is specially used to capture illegal parking, as well as reverse traffic and illegal lane changes.
2. Electronic police
It is most common at intersections, mainly to detect: running red lights, pressing lines, going backwards, changing lanes illegally, occupying non motor vehicle lanes, driving without guidance, etc. Many electronic police are equipped with LED fill light, which is not bright during the day, but will flash at high frequency at night, which is used for capturing fill light.

3. Interval speed measuring camera
It is generally composed of two cameras, which are respectively placed at the head and tail of the expressway intersection. The main function is to record the time of vehicles entering and leaving the road section to calculate the average speed. If the time is too short, it must be speeding, and the accuracy is very high.
4. Bayonet camera
It is also a long strip camera, generally in some key sections of expressways, provincial highways and national highways. It is mainly used to measure speed, capture speeding and other illegal driving behaviors.
Generally, when passing this kind of camera, there will be a dazzling flash. If the flash lamp flashes 2 times continuously, it means that you have exceeded the speed limit. (According to the traffic law, if the overspeed is less than 10%, you will not be punished; if the overspeed is more than 10%, the photos just taken will be uploaded to the traffic police"s punishment system.)