
It is determined by capturing three photos with electronic cameras: a photo of the vehicle crossing the stop line at the intersection, including the traffic light showing red and the license plate number; a photo of the vehicle completely crossing the stop line, including the traffic light showing red and the license plate number; and a photo of the vehicle continuing to move, comparing to see if the vehicle's position has changed, including the traffic light showing red and the license plate number. Capturing these three photos can determine that the vehicle has run a red light. The act of running a red light is clearly stipulated 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 pass, and a yellow light serves as a warning. A red light is a traffic signal prohibiting passage, and if a vehicle passes through an intersection when the light is red, it constitutes the traffic violation of running a red light. Based on the following points, you can avoid running a red light: First look at the arrow light, then the circular light: Currently, there are two types of indicator lights: arrow traffic lights and circular indicator traffic lights. In the presence of an arrow light, first look at the arrow light and then the circular light to avoid running a red light. Note: When encountering a circular red light, you can turn right; when encountering an arrow signal light with a red right-turn arrow, you cannot turn right, otherwise it will be penalized as running a red light. Brake in time: When the red light is on, do not let the front of the vehicle cross the stop line. If the front wheels accidentally cross, and the rear wheels follow, the electronic camera will capture it, and it will be penalized as running a red light; when the front wheels have just crossed the stop line and the signal turns red, passage through the intersection is prohibited. Wait for the green light before proceeding. Check the green light countdown to decide whether to proceed: When the green light is flashing, if there is a countdown, you can judge based on the countdown; if there is no countdown, and the vehicle is close to the intersection and moving at a high speed, you can pass to avoid running a red light due to untimely braking; if the speed is not high and the vehicle is far from the intersection, brake immediately to stop and 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 regarding motor vehicle signal lights and non-motor vehicle signal lights: When the green light is on, vehicles are permitted to pass, but turning vehicles must not hinder the passage of straight-moving vehicles and pedestrians. When the yellow light is on, vehicles that have already crossed the stop line may continue to pass. When the red light is on, vehicles are prohibited from passing. At intersections without non-motor vehicle signal lights and pedestrian crossing signal lights, non-motor vehicles and pedestrians should follow the motor vehicle signal lights. When the red light is on, right-turning vehicles may pass if they do not hinder the passage of other vehicles and pedestrians. Running a red light is not illegal under the following circumstances: Yielding to special vehicles: Yielding to special vehicles such as ambulances and fire trucks. If captured by surveillance cameras while yielding to special vehicles, the act of running a red light will not be recorded during manual review. Even if recorded, you can apply for reconsideration at the traffic police department. Extreme weather: When visibility is very low, and even electronic police cannot clearly see the traffic lights. The photos of the violation may be blurred, and if you accidentally run a red light, the traffic police will not impose penalties. Emergency situations: When rushing a critically ill patient to the hospital, you will inevitably run many red lights, and 12 points may not be enough. After delivering the patient, citizens can provide proof from the hospital or the person being assisted to the traffic police for verification. If confirmed, the violation record can be cleared. If possible, it is best to call an ambulance to avoid traffic accidents caused by running red lights. Traffic police command: During peak hours, traffic police may temporarily direct traffic at important intersections. Drivers should follow the gestures of the traffic police.

I believe the key to determining whether you ran a red light while making a left turn depends on your position and actions when the light turns red. If you start turning while still behind the stop line when the light turns red, that's definitely running a red light. Intersection cameras will automatically capture this violation, providing evidence of your car's movement. Even when the turn signal is green, pay attention to signal changes—stop immediately and wait if it turns red. With years of driving experience, I've seen many accidents caused by drivers rushing to turn without noticing the red light. For example, during rush hour when traffic is heavy, some misjudge the green light timing and dash out to turn the moment the light turns red. Safe driving comes from forming good habits: slow down before turning, observe traffic signals and pedestrian conditions, and avoid distractions like phones that could impair judgment. Remember, the risks of running a red light aren't just fines and points—it could lead to collisions, which simply isn't worth it. Regularly check traffic signs at intersections to familiarize yourself with the rules.

In my opinion, the key points to determine running a red light when turning left are to focus on the timing of the traffic signal changes and the vehicle's movement. If you are crossing the stop line to turn when the red light comes on, it counts as running the light—the rule requires vehicles to come to a complete stop at red lights. Some intersections have dedicated turn signals where a red light directly prohibits passage, so don’t impulsively start moving. When driving, I always watch for signal changes in advance, like preparing to slow down rather than accelerate as the green light is about to end. Misjudgments often occur in real driving due to blocked visibility or bad weather, such as rain making it hard to see the red light. To avoid tickets, it’s crucial to develop the habit of checking the rearview mirror and blind spots before turning left. Safety first—waiting a few extra seconds at a red light is better than taking risks, protecting both yourself and others. Be even more patient at congested intersections, waiting for the green light to fully activate before proceeding.

Determining whether a left turn runs a red light actually relies on accurate signal recognition and vehicle position monitoring. If the vehicle is still moving and turning when the red light is on, it constitutes a violation. Nowadays, most urban intersections are equipped with high-definition cameras to automatically capture such violations. From a technical perspective, vehicle dashcams can also assist in judgment—playback the footage to check if your wheels are turning the moment the red light turns on. If you encounter a signal turning red during a turn, you must stop immediately. I've noticed that some intelligent systems use algorithms to analyze light colors and motion trajectories to warn of violation risks. Paying attention to the red light status during daily driving is sufficient for prevention.

As an ordinary driver, I feel judging whether a left turn runs a red light is quite simple: if your car is in the process of turning or just starting to turn the moment the red light comes on, it counts as running the red light. The rule is that you must come to a complete stop when the light is red. Left turns are prone to errors due to haste or urgency, such as rushing to catch the tail end of a green light and moving the instant the red light appears. The safety driving advice is to never take risks—decisively brake and wait as soon as you see a red light. The safest approach is to start turning only when the intersection waiting area light turns green. During regular driving, pay more attention to the intervals of traffic signals and the positions of road markings.


