How many seconds after the light turns red does the camera start taking photos?
2 Answers
When the red light turns on: The camera system is activated. Here is some relevant information about traffic lights: 1. Introduction: Traffic lights are signal lights that direct traffic flow. 2. Classification: Traffic lights are divided into motor vehicle signal lights, non-motor vehicle signal lights, pedestrian crossing signal lights, directional indicator lights (arrow signal lights), lane signal lights, flashing warning signal lights, and railway crossing signal lights. 3. Light colors: Initially, there were only red and green colors. Later, after improvements, a yellow light was added. The red light means stop, the yellow light means prepare, and the green light means go. The reason these three colors are used as traffic signals is related to people's visual structure and psychological reactions.
I've been driving for over 20 years and seen countless intersection cameras in action. There's truly no unified standard for when the photo capture begins. In most cases, the system has a buffer period of about 1 to 3 seconds after the red light turns on, designed to avoid mistakenly capturing vehicles still in transition. But this varies greatly: in bustling city centers, the equipment responds quickly, sometimes detecting instantly; at older suburban intersections, the delay might be slightly longer. The key is not to rely on this delay—safe driving is what's reliable. I remember at one crossroads in Beijing, a car rushed through just as the red light flashed and got caught immediately. In short, develop good habits: start slowing down at yellow lights and come to a steady stop before the stop line—don't risk racing against the clock.
