What is Fixed Speed Detection?

[DiIsabelle]

Fixed speed detection refers to traffic speed monitoring devices such as red light speed cameras and fixed speed cameras at speed limit signs, which are pre-installed on roadways. Conqueror has professional staff who collect GPS fixed data nationwide, continuously updating the database. Fixed camera points require updates and downloads from the server to achieve the most accurate fixed camera alert function. Speed detection locations: On national and provincial highways, if you see a speed limit sign, there may be a fixed speed detection point ahead. The specific location is "between 500 meters after the start of the speed limit sign and the cancellation of the speed limit sign or the next speed limit sign." This means fixed speed detection points are set more than 500 meters away from the speed limit sign, not immediately adjacent to it. Cases where no record is made: Generally, cameras will record the vehicle's speed, take photos based on the speed, and identify the vehicle's license plate number. As long as the speed is kept within the specified limit, even if photos are taken, no record will be made. Speed detection uses average speed measurement, with the following working principle: It calculates whether a vehicle is speeding based on "average speed," using a two-point capture mode.

[Damian]

Last week I got caught by one on the highway. Fixed speed cameras are essentially electronic police installed roadside, specifically monitoring vehicle speed. These are commonly found near highway exits, tunnel entrances, or school zones - a metal box mounted on a pole containing radar speed guns and cameras. If your speed exceeds the posted limit, the radar wave detects your car instantly triggering photos: one shot of the front license plate and one of the rear, with speed data transmitted directly to the traffic police system. Memorizing their locations is crucial, as many navigation apps will alert you to upcoming fixed speed traps. But the key is simply not to speed - safety comes first. These devices exist to encourage responsible driving.

[LilaMarie]

I've studied the principles of this device. Fixed speed cameras are all-weather electronic enforcement systems. Unlike mobile speed enforcement vehicles, they are permanently installed at specific locations and detect vehicle speed via radar or induction loops. Radar-based systems calculate speed by measuring the feedback time of emitted microwaves, while loop-based systems use buried induction wires to measure the time difference as tires pass over them. Once speed limit violations are detected, the system completes license plate recognition and panoramic image capture within 0.3 seconds, with some models equipped with fill lights to ensure clear nighttime imaging. Different cities use varying equipment models, with some even capable of simultaneously detecting seatbelt violations - the technology is becoming increasingly sophisticated these days.

[Cindy]

Simply put, it's a fixed roadside speed camera, commonly found on highways and national roads. As you drive by, it uses radar to detect your speed. If you exceed the limit, it automatically takes photos as evidence. Compared to on-site traffic police enforcement, these devices operate 24/7, making them fairer but harder to avoid. It's advisable to watch out for square boxes or cameras mounted on roadside poles, especially in areas prone to speeding. If you get caught, don't panic. Records usually appear on the 12123 APP within a week. However, fines and points are minor issues—road safety is what truly matters.

[StIan]

Attention new drivers! Fixed speed cameras are monitoring devices installed in advance on poles, different from temporary speed guns. They are often located in hazardous areas like bridge ramps and sharp turns, with some even disguised as streetlight poles. The working principle is quite simple: the device emits radar waves that bounce off your car, calculating speed based on frequency changes. Speeding instantly triggers high-definition cameras, with some newer models capable of capturing the driver's facial expressions clearly. I remember last year on a provincial highway, unable to see speed limit signs in rain and fog, I got caught doing 80km/h in a 60km/h zone - a painful lesson reminding everyone to slow down further in bad weather.