What is the speed limit when visibility is less than 50 meters in foggy conditions?
2 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.
