Line snapshot of Zhengzhou daxue road co., ltd. We usually see two kinds of camera capture monitoring, namely illegal capture and regular registration. Let's talk about regular registration first. The purpose of this monitoring record is to record the license plate, vehicle type, traffic flow, etc. Sometimes, police uncles can use these photos to solve cases and track criminals. The other is illegal evidence collection, which only flashes once, and may only record standard information, but if it is found that it has been flashed many times, it may be illegally recorded. Take running a red light as an example, generally at least three pictures are needed as the basis: the vehicle is in front of the stop line; When the car crosses the stop line; The vehicle went on driving after crossing the stop line. In this process, every time the electronic eye takes a photo, it means that it is collecting evidence once. Other violations, such as line pressing, lane changing, speeding, etc. , are similar methods of capturing pictures.