What is the speed limit when visibility is less than 100 meters?
2 Answers
When visibility is less than 100 meters, the vehicle speed must not exceed 40 kilometers per hour, and a distance of more than 50 meters should be maintained from the vehicle ahead. Turn on the fog lights, low beam lights, position lights, and front and rear position lights. When motor vehicles are driving on the road and encounter low-visibility weather conditions such as fog, rain, snow, dust, or hail, the road management department should issue speed limits, safe distance reminders, and other information through displays. A safe distance refers to the necessary gap that a following vehicle maintains from the vehicle ahead to avoid accidental collisions. When driving on the road under low-visibility weather conditions such as fog, rain, snow, dust, or hail, the following regulations must be observed: When visibility is less than 500 meters but greater than 200 meters, the low beam lights, width indicator lights, and rear fog lights must be turned on; the speed must not exceed 80 km/h; maintain a driving distance of more than 150 meters. When visibility is less than 100 meters, turn on the fog lights, low beam lights, position lights, front and rear position lights, and hazard warning flashers. The speed must not exceed 40 kilometers per hour, and a distance of more than 50 meters should be maintained from the vehicle ahead in the same lane. When visibility is less than 50 meters, turn on the fog lights, low beam lights, position lights, front and rear position lights, and hazard warning flashers. The speed must not exceed 20 kilometers per hour. If on a highway, exit at the nearest exit as soon as possible. Precautions for driving in foggy conditions: Make good use of lights. When driving in foggy conditions with low visibility, fog lights and position lights must be turned on, and high beams are prohibited. High beams shine upward, and the light is diffusely reflected by the fog, creating a white haze in front of the car, which affects driving. Fog lights have high light penetration, and turning them on makes the vehicle clearly visible to others. Maintain a safe distance from the vehicle ahead. Do not follow too closely, and avoid unnecessary overtaking. This prevents insufficient reaction time in case of an accident, which could lead to rear-end collisions. Frequently use the horn to indicate your position.
I remember the first time I drove in thick fog, visibility was less than 100 meters, and the road was completely white, making it impossible to see distant vehicles clearly. At that time, the speed had to be kept under 40 kilometers per hour, which is a basic safety rule. Under such conditions, the range of vision is short, and reaction time is extremely limited. Once, I wasn’t paying attention and drove a bit faster, almost rear-ending the car in front—fortunately, I braked in time. Since then, I always remind myself to slow down below 40 in foggy conditions, not just for my own safety but also to avoid causing trouble for others. It’s best to turn on the fog lights, maintain a safe distance, and not take risks just to save time. These experiences have made me appreciate safe driving habits even more, and developing a routine of regular vehicle checks can reduce the risk of accidents. In bad weather, patience is the greatest safeguard—don’t let impulsiveness affect your judgment.
