What are the criteria for determining a red light running violation?

[MacAdriel]

The determination is made based on three photos captured by electronic cameras: the first photo shows the vehicle crossing the stop line at the intersection, including the red traffic light and license plate number; the second photo shows the vehicle completely crossing the stop line, including the red traffic light and license plate number; the third photo shows the vehicle continuing to move, mainly by comparing the change in the vehicle's position from the second photo, including the red traffic light and license plate number. Capturing these three photos confirms a red light running violation. Red light running is clearly defined in the Road Traffic Safety Law. Article 26 states that traffic signals consist of red, green, and yellow lights. A red light indicates prohibition of passage, a green light indicates permission to proceed, and a yellow light serves as a warning. Running a red light is a traffic violation where a vehicle crosses an intersection while the light is red. Six scenarios of red light running: Stopping immediately after crossing the line (when the light turns red, the vehicle fails to stop in time and the front crosses the stop line): If the vehicle only slightly crosses the stop line and stops immediately, it is not penalized. However, if there is noticeable movement after crossing the line, it will be penalized. The three photos required for a red light running violation are: the front wheels crossing the stop line, the rear wheels crossing the stop line, and the front wheels crossing the opposite stop line. Only when all three photos are present is it considered a red light running violation, which incurs a 6-point deduction under the new regulations. Running a red light under police direction (the light is red, but the traffic officer signals to proceed): When there is a conflict between the traffic light and the officer's gesture, drivers must follow the officer's instructions. If a driver runs a red light due to the officer's direction, they can request a diversion certificate from the local traffic police department to avoid penalties. If the driver disagrees with the penalty, they can appeal through administrative reconsideration or litigation. Stopping after the entire vehicle crosses the line (failing to brake in time, causing the entire vehicle to cross the stop line): If the vehicle stops completely after crossing the stop line without further movement, it is not considered a red light running violation but rather a stop line violation. Reversing after crossing the line (attempting to avoid penalties by reversing after crossing the stop line at a red light): Reversing is prohibited at railway crossings, intersections, one-way roads, bridges, sharp curves, steep slopes, or tunnels. Violators may receive a warning or fine. Accidentally running a red light behind a large vehicle: Drivers must maintain sufficient visibility to see traffic signals and ensure a safe braking distance. Typically, vehicles caught behind large vehicles at intersections are penalized for rushing through the signal, which is treated as a red light running violation. Passing through the intersection during a yellow light (crossing the intersection when the light turns yellow): According to Article 91 of the Implementation Regulations of the Road Traffic Safety Law of the People's Republic of China, vehicles that have already crossed the stop line when the yellow light flashes may continue to proceed. If a driver speeds through a yellow light, it may still be considered a red light running violation if captured.

[VanArya]

Having driven for ten years, what I fear most is accidentally running a red light, so I later specifically researched the criteria for this violation. In fact, the electronic eye needs three photos to capture a red-light run: the first shows the front wheels crossing the stop line, the second shows the rear wheels following suit, and the third shows the vehicle proceeding to the opposite intersection. All three photos are indispensable—missing any one means it doesn’t count as running a red light. If you stop immediately after crossing the line, at most it’s considered overstepping the stop line, which only deducts 2 points. But never reverse, as being caught moving backward will definitively count as running the red light. When waiting at an intersection, always wait for the circular light to turn green before proceeding, and don’t be misled by the left-turn arrow signal. Traffic police websites in various regions provide standard diagrams, and I recommend new drivers search for actual photos from their own cities to study.

[SanKendra]

After my friend was mistakenly judged for running a red light last time, we looked up a lot of information. Nowadays, the electronic police at intersections are particularly smart. Once the red light turns on, as long as they detect the vehicle's wheels crossing the line, they automatically take three consecutive photos. The first photo captures the front wheels pressing the line, the second shows the entire vehicle crossing the stop line, and the third is of the vehicle continuing to move within the intersection. Only with all three photos is it considered a complete chain of evidence. But there's a catch: crossing the line when the yellow light is on doesn't count as a violation, but if the rear of the vehicle hasn't passed the line the moment the yellow turns red, the camera will start taking photos. If the vehicle stops immediately after completely crossing the line, it won't trigger the third photo. If you disagree with the judgment, you can request the traffic police to provide these three consecutive photos as evidence for an appeal.

[KayleeFitz]

The principle of running a red light capture is quite simple. Nowadays, it's mostly a combination of ground pressure coils and cameras: when the light is red, the camera is triggered if the vehicle's wheels press the induction line before the stop line. The key is to check three consecutive photos: the front of the car crossing the line, the rear of the car crossing the line, and the car reaching the opposite intersection. If any of these photos is missing, it doesn't count as running a red light. However, it's important to note that the traffic signal must correspond to the lane. For example, entering the left-turn waiting area when the straight signal is red doesn't count as a violation. If the road markings are unclear due to rain, the system will determine the vehicle's position based on the wheel location after the signal changes. Standard diagrams can be found on local traffic police apps, which are much more intuitive than text descriptions.

[Eliana]

Once heard from a traffic police friend about these details: The core criterion for running a red light is whether the vehicle completely passes through the intersection during the red light. The electronic eye captures three photos: the front wheels crossing the line during the red light, the entire vehicle on the stop line during the red light, and the vehicle entering the opposite intersection during the red light. It's especially important to note that if the vehicle just crosses the line as the light turns red, do not force your way through; stopping in place only counts as crossing the stop line. However, reversing back over the stop line will be considered a violation because the electronic eye can capture the displacement trajectory. If a large truck accidentally runs a red light due to blind spots, presenting dashcam footage may reduce the penalty.

[DelAlaina]

When I first got my driver's license, my instructor emphasized that the counting starts as soon as the wheels cross the stop line after the red light turns on. A complete red-light violation requires three pieces of photographic evidence—a photo of the front wheels just crossing the line, a photo of the entire vehicle crossing the stop line during the red light, and a photo of the vehicle still moving through the intersection while the red light is on. There's a special case: turning right during a circular red light is not considered a violation unless there's a dedicated right-turn arrow red light. Night driving requires extra attention to reflective road markings, as some drivers have been mistakenly ticketed due to unclear markings. If you find that the traffic signal is obscured by tree branches leading to a misjudgment, providing on-site photos during an appeal can help get the ticket revoked.