What is the minimum speed limit on highways during rainy days?

[DiElijah]

During heavy rain on highways, the speed can be lower than 60 km/h, subject to the weather conditions and speed limit information issued by the highway management authorities. When driving on highways 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 beams, outline markers, and front and rear position lights. The speed must not exceed 60 km/h, and maintain 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 beams, outline markers, front and rear position lights, and hazard warning flashers. The speed must not exceed 40 km/h, and maintain a distance of more than 50 meters from the vehicle ahead in the same lane.