At what distance does fixed speed monitoring start taking photos?
2 Answers
It is difficult to determine exactly how many meters before a fixed speed monitoring point the device can detect and take photos, as the relevant data varies for different types of equipment. Generally, detection occurs within 20 meters, and photos are taken at around 5 meters. Note: 1. Speed monitoring locations: On national and provincial highways, if you see a speed limit sign, there may be a fixed speed monitoring point ahead. The specific location is "between 500 meters after the starting point of the speed limit sign and the point where the speed limit is lifted or the next speed limit sign appears." This means fixed speed monitoring points are set at least 500 meters beyond the speed limit sign, not immediately adjacent to it. 2. Situations where no record is made: Generally, the camera records the vehicle's speed, takes photos based on the speed, and identifies the license plate number. As long as you stay within the specified speed limit, even if photos are taken, no record will be made. 3. Speed monitoring uses average speed calculation: The system works by calculating the "average speed" to determine if a vehicle is speeding, employing a two-point capture mode.
I studied this issue right after getting my driver's license, and now with over a decade of driving experience, I can say the detection distance of fixed speed cameras definitely isn't a one-size-fits-all matter. The most common range is about 100 to 200 meters for detection - those gantry-mounted cameras on highways with their flashing warning lights visible from far away. Many factors affect this: road conditions, poor weather, or heavy traffic can shorten the effective distance. Urban areas might have shorter ranges around 70 meters, while suburban areas can reach 150 meters. I always remind new drivers to start slowing down as soon as they see speed limit signs, not waiting for the camera activation. It's not just about avoiding tickets - safety comes first, especially when driving at night with poor visibility.
