What is the function of car fog lights?
2 Answers
The function of car fog lights is: 1. To improve illumination in unclear road conditions ahead, providing a high-intensity scattered light source that penetrates thick fog and serves to alert oncoming drivers; 2. In environments with low visibility such as fog, snow, or rain, to ensure that other road users behind the vehicle can detect it. Precautions for using car fog lights include: 1. Fog lights must be turned on and speed reduced when visibility drops below 100 meters; 2. When visibility is below 30 meters, fog lights should be turned on, the vehicle should pull over, and hazard warning lights should be activated; 3. In weather conditions like rain, fog, snow, or dust, fog lights should be turned on and speed reduced, but double flashing lights should not be used.
I remember when I first started driving, I didn’t know what fog lights were for. Later, during a heavy winter fog when visibility was almost zero, I turned them on, and the light penetration was much stronger—I could see over ten meters ahead. Normally, fog lights are used in low-visibility conditions like fog, rain, or snow. They’re positioned low to avoid the glare and reflection of headlights, instead shining directly on the road to reduce dazzle. This way, not only can I see better, but other drivers can spot me more easily, reducing risks like rear-end collisions. Also, some local regulations restrict their use to specific conditions, so don’t turn them on unnecessarily to avoid fines. The key is to regularly check the bulbs and switches—if they fail during heavy fog, it’s a real problem. Bottom line: fog lights aren’t for illuminating the distance but for making nearby road conditions, pedestrians, and vehicles safer.
