
Running a red light at an intersection typically captures the rear of the vehicle. Electronic cameras take three photos to determine the violation: a photo of the vehicle crossing the stop line at the intersection, showing the red light and license plate number; a photo of the vehicle completely crossing the stop line, showing the red light and license plate number; and a photo of the vehicle continuing to move, comparing the vehicle's position change, showing the red light and license plate number. Capturing these three photos confirms the vehicle ran a red light. The act of running a red light 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 permits passage, and a yellow light serves as a warning. Running a red light is a traffic violation where a vehicle passes through an intersection when the light is red. To avoid running a red light, consider the following: Check the arrow light first, then the circular light: Currently, there are two types of traffic signals: arrow traffic lights and circular traffic lights. If an arrow light is present, check it first before looking at the circular light to avoid running a red light. Note: When encountering a circular red light, right turns are permitted. However, if the right-turn arrow is red, right turns are prohibited, and violations will be penalized as running a red light. Brake in time: When the red light turns on, ensure the front of the vehicle does not cross the stop line. If the front wheels accidentally cross, but the rear wheels follow, the electronic camera will capture it, resulting in a penalty for running a red light. If the front wheels have just crossed the stop line when the light turns red, do not proceed; wait for the green light. Check the green light countdown before proceeding: When the green light flashes, if there is a countdown, use it to judge. If there is no countdown and the vehicle is close to the intersection with high speed, proceed to avoid running a red light due to late braking. If the vehicle is slow and far from the intersection, brake immediately to avoid running a red light. Article 38 of the "Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China" states: When the green light is on, vehicles are permitted to pass, but turning vehicles must not obstruct straight-moving vehicles or pedestrians. When the yellow light is on, vehicles that have already crossed the stop line may continue. When the red light is on, vehicles are prohibited from passing. At intersections without non-motorized vehicle or pedestrian signals, non-motorized vehicles and pedestrians should follow the motor vehicle signal. When the red light is on, right-turning vehicles may pass if they do not obstruct other vehicles or pedestrians. Running a red light is not considered illegal under the following circumstances: Extreme weather: If visibility is so low that even electronic police cannot clearly see the traffic light, resulting in blurred evidence, no penalty will be imposed for mistakenly running a red light. Emergency situations: When rushing a critically ill patient to the hospital, running multiple red lights may occur. After delivering the patient, provide hospital or patient proof to the traffic police for verification. If confirmed, the violations will be cleared. If possible, call an ambulance to avoid accidents caused by running red lights. Police direction: During peak hours, traffic police may direct traffic at key intersections. Drivers should follow the officer's hand signals. Yielding to emergency vehicles: Yield to ambulances, fire trucks, and other emergency vehicles. If captured by surveillance cameras while yielding, manual review will not record the red light violation. Even if recorded, you can apply for reconsideration with the traffic police.

I've specifically researched this issue, and it mainly depends on the intersection setup you're referring to. Most intersections capture from the rear, with cameras mounted on poles opposite the stop line, aimed at the back of vehicles. This design is quite reasonable because license plates at the rear are clearly visible after a car crosses the line, whereas headlights from the front can be too glaring for clear footage. I recall reading that 90% of intersections in China follow this layout. However, there are exceptions in special road sections, like those with unconventional reverse lanes, where additional front-facing cameras might be installed—though such cases are quite rare. It's always best to wait patiently for the green light when driving; nowadays, cameras are high-definition, capable of zooming in ten times on license plates while maintaining clarity.

Having driven for over a decade, I've seen it all – most red-light violations are captured from behind. You'll notice traffic camera poles are usually installed on the opposite side of the intersection. When a vehicle runs a red light, the system snaps clear photos of the rear license plate. This design offers two advantages: daylight glare reflection on plates isn't an issue, and nighttime headlight flare won't blind the camera. The system actually takes three consecutive shots: the first when front wheels cross the stop line, the second when the vehicle reaches the intersection center, and the third showing complete crossing. This triple-photo sequence serves as irrefutable evidence. Some modern intersections now feature frontal cameras, primarily for monitoring pedestrian violations or managing special lanes.

Last year, I helped a friend deal with a traffic ticket, and the traffic police showed me the violation photos. Running a red light is mostly captured from the rear of the vehicle because the cameras are installed on the opposite side of the intersection, allowing them to accurately photograph the license plate number. This design is quite scientific. Firstly, the license plate at the rear has less light interference, and secondly, it can fully record the vehicle's trajectory. I've studied this—the system is mainly triggered by induction coils underground, which activate as soon as a vehicle crosses the line. Some places have introduced new equipment that uses radar to detect speed in conjunction with for greater accuracy. In any case, capturing the rear is the most reliable solution.

I have personal experience with this issue! I once ran a yellow light out of ignorance and got caught, receiving a ticket with a close-up of my car's rear. Later, I specifically observed and found that those box-shaped cameras at intersections are mostly installed on the opposite lane's guard booths or lamp posts. When the car just crosses the line, it takes a snapshot, capturing the entire rear of the car and the license plate. I've heard that newly upgraded systems can capture the front, but they're rarely seen at intersections in practice. I guess front-facing cameras are mainly used to catch lane-cutting or wrong-way driving, as the front of the car is easily affected by strong light, making the photos potentially unclear. Friendly reminder: if you see the flash go off, there's basically no escaping—the system uploads the images to the network immediately upon capture.

Last week when I took my son to driving school, the instructor kept emphasizing this point: Running red lights mainly captures the rear of the vehicle. The reason is that cameras are mostly installed on the opposite side of the road, specifically aimed at your car's rear. I've observed five nearby intersections, and four of them have those flash-equipped monitoring boxes installed on the opposite side. This angle can fully capture the license plate and the act of crossing the line, without being affected by windshield glare. Although some intersections might have front-facing cameras, 90% of cases use rear-capture mechanisms. Remember not to rush those few seconds when you see a red light - safety first.


