What are the special regulations for speed limit in expressway in rainy, snowy and foggy days?

According to the Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China, there are the following provisions:

Eighty-first motor vehicles driving on the expressway, in case of fog, rain, snow, dust, hail and other low visibility meteorological conditions, shall comply with the following provisions:

When the visibility is less than 200 meters, turn on the fog lights, low beam lights, position lights and front and rear position lights, the 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;

When the visibility is less than 100 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 40 kilometers per hour, and keep a distance of more than 50 meters from the vehicle in front of the same lane;

When the 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 from the nearest exit as soon as possible.

Extended data

Other matters needing attention in expressway.

Motor vehicles driving in expressway, shall not have the following acts:

1, reversing, retrograde, turning around and crossing the isolation belt or parking in the driveway;

2. Overtaking on ramp, acceleration lane or deceleration lane;

3. Riding, rolling the lane boundary or driving on the shoulder;

4. Driving or parking in the emergency lane in non-emergency situations;

5. Test drive or learn to drive a motor vehicle.

Baidu Encyclopedia-Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China