How many seconds after the light turns red does the camera start capturing?

[SanJoshua]

After 3 seconds, the camera will start capturing vehicles running red lights. Here is the relevant information: Red light running capture: When the red light is on, the induction line senses the pressure from vehicles on the road and uses sensors to transmit the signal to the central processor, which is temporarily stored in the register. The moment the red light turns on, if two signals are successfully sent, it is considered running a red light. Working principle: When the red light is on, if the front wheels of the vehicle cross the line but the rear wheels are still within the line, only one signal is generated, and the chance of being captured is low. However, if the front wheels cross the line and the vehicle reverses back within the line to avoid being captured, the camera may sense it and send another signal. Two signals will then be judged as running a red light.