When taking pictures from behind, the line pressed by the rear wheel of the car shall prevail.

1. The electronic eye uses a sensing line to sense the pressure from the car on the road, collects the signal to the central processor through the sensor, and sends it to the register for temporary storage (the data is valid within a red light cycle); 2. At the same time interval

Within (during the red light cycle), if two pulse signals are generated at the same time, it is considered "valid". Simply put, if the light is red at that time, the front wheel passes the line, but the rear wheel does not, then only one pulse is generated.

, no picture will be taken when there are no two consecutive pulses; 3. In some cases, some people drive their front wheels over the line and are afraid of being photographed, so they reverse the car again and return to the line, but they are still photographed.

Yes, what's the reason?

It was because a "pair" of pulse signals were generated one after the other (this pair of pulses was generated in the same red light cycle), and I was queued n times because of this.

However, most current electronic JC induction coils have logical identification functions, so there is no need to capture this situation.

4. When the yellow light is on, the camera system will start after a delay of 2 seconds; when the red light is on, the system has been started; when the green light is about to turn on, the system will be shut down 2 seconds in advance, mainly to prevent accidental shooting.

So many taxi drivers know that they can leave as soon as possible and everything will be fine.