Under what circumstances should fog lights be turned on?

[HadleyMarie]

According to traffic regulations, fog lights should be activated under the following visibility conditions: between 100-200 meters and between 50-100 meters. There are two key regulations regarding fog light usage: 1. On highways when visibility is below 200 meters: When visibility is between 200-500 meters, low beam headlights, width markers, and tail lights must be turned on, with speed not exceeding 80 km/h. When visibility is between 100-200 meters, fog lights, low beam headlights, width markers, and tail lights must be activated, speed should not exceed 60 km/h, and a minimum distance of 100 meters should be maintained from the vehicle ahead. 2. Penalties for improper fog light use: A minimum fine of 50 RMB and 1 penalty point will be imposed. For driving vehicles prohibited from entering highways onto highways, 6 penalty points will be deducted, a 200 RMB fine will be issued, and the driver's license may be suspended for up to 12 months.

[VanFinley]

When it comes to turning on the fog lights, my experience is that they are mainly used in weather conditions with particularly low visibility. For example, in thick fog, heavy rain, or snowstorms, regular headlights might cause the light to be reflected by the fog or scattered by the rain, making the view even blurrier. The design of fog lights is quite special: the front fog lights are positioned low and have minimal light diffusion, allowing them to penetrate the fog and illuminate the ground close to the car, helping me safely see the road edges; the rear fog lights emit a bright red light, increasing the distance at which following vehicles can spot me and reducing the risk of rear-end collisions. I remember once encountering heavy fog on the highway—after turning on the fog lights and slowing down, driving felt much safer. However, on clear days, it's best not to use them, as they are very bright and can dazzle other drivers, not to mention waste electricity. Make it a habit: turn them on when the fog rolls in and turn them off promptly when it clears, ensuring road safety.

[Serena]

After driving for so many years, I've learned to use fog lights flexibly in bad weather. When visibility drops to just a few dozen meters in fog or heavy rain, I don't hesitate to press that button. The front fog lights help lower the road illumination, reducing glare from the fog; the rear fog light acts like a warning beacon, letting following vehicles spot me earlier to avoid accidents. They might also be needed during snowfall—when snow and fog mix to obscure the road, turning on the fog lights gives some peace of mind. But some people have bad habits, keeping them on even after the fog clears, which not only dazzles others in clear weather but also attracts unwanted attention from traffic police. My advice: check and turn them on when the weather worsens, and switch them off promptly when conditions improve. Proper use makes driving safer and reduces road hazards.

[WilliamMarie]

Fog lights aren't used daily; they're specifically designed for poor visibility conditions like heavy fog or torrential rain. Unlike regular headlights, they're positioned lower and have stronger light penetration, helping me see nearby road conditions clearly in fog while reducing glare. The rear fog lights are bright enough to alert following vehicles to maintain distance. During daily driving, I only activate fog lights when visibility is so poor that I need to slow down, but I always remember to turn them off once conditions improve or when entering urban areas to avoid dazzling others. Simple yet practical – safety always comes first.

[MacAlexandra]

Many drivers don't understand when to use fog lights during regular driving. I must emphasize that they're only meant for extreme low-visibility conditions – like heavy fog, torrential rain, or snowstorms. In these situations, fog lights significantly improve safety: front fog lamps illuminate the road ahead while rear fog lights emit an eye-catching red glow to alert following vehicles. The common problem is improper use – keeping them on during clear weather can dazzle other drivers, especially the intense glare from rear fog lamps. One night an oncoming car's fog lights nearly blinded me, prompting an angry honk. Develop good habits: activate them for hazardous weather safety, but switch off immediately when conditions improve. Don't misuse this equipment at others' expense.

[MaddoxLee]

Based on my driving experience, fog lights should be turned on in extremely poor visibility conditions, such as when the fog is so thick that you can only see a very short distance ahead, or during heavy rain or snow when visibility is blurred. Rear fog lights are particularly important, as they significantly increase the likelihood of being seen by vehicles behind you, preventing rear-end collisions; front fog lights help to see road details more clearly. When using them, be sure to turn them off as soon as the weather improves, especially the rear fog lights, as they are too bright and their misuse can cause discomfort to other drivers and even violate traffic rules. Use fog lights sparingly on urban roads to avoid light pollution affecting pedestrians. In short, turn them on and off at the right times to protect yourself and others.