What is the driving speed in special weather?

The driving speeds in special weather are 60 km/h, 50 km/h and 20 km/h respectively. Visibility less than 200m: When visibility is less than 200m, turn on fog lights, low beam lights, position lights and front and rear position lights. The vehicle speed shall not exceed 60 kilometers per hour, and keep a distance of more than 100 meters from the vehicle in front of the same lane. Visibility is less than 100m: When visibility is less than 100m, turn on fog lights, low beam lights, position lights, front and rear position lights and hazard warning flashlights. The speed shall not exceed 40 kilometers per hour, and keep a distance of more than 50 meters from the car in front of the same lane. Visibility less than 50 meters: When visibility is less than 50 meters, turn on fog lights, low beam lights, position lights, front and rear position lights and hazard warning flashlights, and the speed shall not exceed 20 kilometers per hour. Leave expressway by the nearest exit as soon as possible.