What is the recommended following distance in foggy conditions with 200 meters visibility?

[BrodyFitz]

When driving in foggy conditions with 200 meters visibility, vehicles should maintain a distance of at least 100 meters from the preceding vehicle in the same lane. Here are some precautions for driving in fog: Proper use of lights: When driving in fog, drivers should turn on both front and rear fog lights. If the fog is extremely dense, hazard lights should also be activated. The main purpose of turning on fog lights and hazard lights is to make your vehicle more visible to other drivers, helping to prevent rear-end collisions or side-swipe accidents. Timely roadside parking: If heavy fog suddenly appears and you cannot reach the nearest service area in time, you should quickly pull over to the emergency stopping lane on the highway. Simultaneously, turn on your fog lights, width indicators, and tail lights. Additionally, set up warning signs at least 150 meters away in the direction of approaching traffic.