What is the speed limit when visibility is less than 50 meters in foggy conditions?
4 Answers
200 meters. Visibility is an indicator that reflects atmospheric transparency, defined in the aviation industry as the maximum distance at which a person with normal vision can clearly discern the outline of a target under current weather conditions. Visibility is closely related to the prevailing weather conditions. Below is additional information: Safe following distance: Safe following distance refers to the necessary gap that a following vehicle maintains with the vehicle ahead to avoid accidental collisions while driving. There is no absolute numerical concept for a safe distance; it depends on the specific situation. Generally speaking, the faster the speed and the heavier the vehicle, the longer the required safe following distance.
When driving in fog with visibility dropping below 50 meters, I always reduce my speed to under 20 km/h. After all, with everything so hazy and unclear, reaction time is shortened, and driving too fast makes rear-end collisions or loss of control especially likely. The first thing I do is turn on the fog lights and hazard lights to alert vehicles behind me. On the highway, I stick to the far-right lane and creep along slowly, always ready to stop. I often remind my novice driver friends that it's best to avoid going out in such weather, but if absolutely necessary, drive at low speeds—safety first is the golden rule. Remember to maintain a following distance of at least 50 meters; with blurred vision in foggy conditions, braking early is crucial. Don't take risks just to save time. Drive steadily—preserving your life is what matters most.
As a seasoned driver with over a decade of experience, I'm extra cautious when driving in foggy conditions. Once visibility drops below 50 meters, I immediately reduce my speed to 20 km/h or lower, avoiding overtaking and sudden acceleration. I turn on fog lights and hazard lights, keep to the right lane on highways, focus my eyes on the road ahead, and stay alert to sounds. Driving in fog is like walking blindfolded – speeding can lead to accidents in minutes. I've seen too many crashes caused by speeding, so I stick to slow driving, remain vigilant, and avoid phone use or distractions. I ensure the brake system is checked to prevent skidding, maintain a safe distance of at least two car lengths, and guarantee a stable stop in emergencies.
Driving in fog requires pragmatism. Having driven through countless fog seasons, when visibility drops below 50 meters, I reduce speed to around 20 km/h. There's good reason for this legal requirement – low speed gives you sufficient time to react to emergencies. With headlights and hazard lights on, avoid lane changes or overtaking when visibility is poor; stick close to the roadside. Maintain a following distance of at least 50 meters – don't assume proximity is safe, as nothing is certain in fog. Stay calm while driving; some soothing music can help relieve stress, but maintaining focus is paramount.
