There are rumors online that “LED vehicle signal lights will mistakenly indicate running a red light on smoggy days when visibility is poor” and that “surveillance cameras don’t catch red light violations on smoggy days.”" If you believe these rumors, you might pay a heavy price. Today, Qixiang, a high-penetration traffic light manufacturer, will tell you whether you can actually see LED vehicle signal lights in smoggy weather.
1. If visibility in smog is only a few hundred meters, the distance at an intersection where you can see an LED vehicle signal light is at most a dozen meters, which is within the visible range.
2. Red traffic lights are set as stop signals because red light has the longest wavelength and is least scattered, so red has the strongest penetrating power. Even when yellow and green lights are difficult to distinguish, red traffic lights are very clear. As for green, it is farther away from red in the spectrum and differs greatly from the surrounding natural environment, making it particularly easy for our eyes to recognize.
If the fog is so thick that traffic cameras can’t see the lights clearly, the pictures won’t be complete, and people who run a red light or cross a line won’t be caught or punished. Traffic police said that if someone runs a red light by mistake because they can’t see well, they can ask to have the violation record removed if they are caught on camera. But if the fog isn’t too thick, the traffic cameras will still be able to see the LED vehicle signal lights and license plate numbers clearly when the camera zooms in. Running a red light will definitely get you in trouble in this case.
It’s important to slow down because running a traffic light in foggy weather is more dangerous than usual. Also, don’t think that fog gives you cover and lets you break traffic laws whenever you want; this can easily cause accidents at intersections. When you get close to an intersection in fog, slow down first and then look carefully at the traffic lights, the movement of other cars, or the closest pedestrian crossing signal lights to help you make your decision.
It’s dangerous to drive in smog. You should not drive unless you have to. When driving in smog, drive at low speeds and use your lights correctly, including front and rear fog lights and hazard lights. Don’t ever use high beams. Driving in smog makes it very hard to see because the air is so dense, which can lead to wrong guesses about the state of the road. So, when driving in smog, be very careful. Keep your speed down, stay a safe distance from the car in front of you, and make sure you have enough room to react quickly and avoid accidents. Always turn on your hazard lights and fog lights in the front and back. If you don’t have fog lights, use low beams. Don’t use high beams because the fog will reflect them and make it hard to see.
Qixiang is a high-penetration traffic light manufacturer that makes all kinds of lights, such as vehicle signal lights, pedestrian signal lights, and arrow signal lights. Our anti-fog traffic signal lights use high-brightness LEDs and professional optical lenses to make sure that you can see clearly even when it’s foggy or raining. They are very good at getting through things, have even brightness, and don’t change color. Our products meet national standards, provide a lot of protection, can handle extreme temperatures, are waterproof and dustproof, last a long time, and use less energy. We support bulk supply and customization with multiple specifications. Our prices are competitive, and we provide great customer service after the sale. This makes them great for municipal engineering, road reconstruction, industrial park intersections, and other uses. You can get discounts if you order a lot of items. Welcome to contact us for inquiries, on-site sample viewings, and long-term cooperation!
Post time: Mar-18-2026
