What speed should be maintained when visibility on the highway is below 50 meters?

[VanKeira]

When visibility is less than 50 meters, the vehicle speed must not exceed 20 kilometers per hour, and the driver should exit the highway from the nearest exit as soon as possible. When driving on the highway under low visibility weather conditions such as fog, rain, snow, dust, or hail, motor vehicles must comply with the following regulations: 1. When visibility is less than 200 meters: Turn on fog lights, low beam headlights, clearance lights, front and rear position lights, and the speed must not exceed 60 kilometers per hour, maintaining a distance of more than 100 meters from the vehicle ahead in the same lane; 2. When visibility is less than 100 meters: Turn on fog lights, low beam headlights, clearance lights, front and rear position lights, and hazard warning flashers, and the speed must not exceed 40 kilometers per hour, maintaining a distance of more than 50 meters from the vehicle ahead in the same lane; 3. When visibility is less than 50 meters: Turn on fog lights, low beam headlights, clearance lights, front and rear position lights, and hazard warning flashers, and the speed must not exceed 20 kilometers per hour, and the driver should exit the highway from the nearest exit as soon as possible.

[Hunter]

The answer has been provided.