What is the speed limit for driving on highways in foggy weather?

[MacJackson]

When visibility on the highway is less than 200 meters, maintain a distance of more than 100 meters from the vehicle in front in the same lane. The speed should not exceed 60 kilometers per hour, and fog lights, low beams, outline markers, and front and rear position lights should be turned on. Here are additional details: 1. Less than 100 meters: When visibility is less than 100 meters, turn on fog lights, low beams, outline markers, front and rear position lights, and hazard warning flashers. The speed should not exceed 40 kilometers per hour, and maintain a distance of more than 50 meters from the vehicle in front in the same lane. 2. Less than 50 meters: When visibility is less than 50 meters, turn on fog lights, low beams, outline markers, front and rear position lights, and hazard warning flashers. The speed should not exceed 20 kilometers per hour, and exit the highway at the nearest exit as soon as possible.