How much can the speed not exceed in rainy days?

According to the relevant regulations, when the visibility of motor vehicles is less than 50 meters in fog, rain, snow, dust and hail, the maximum driving speed shall not exceed 30 kilometers per hour. The following are matters needing attention when passing through the flooded section: 1, launching inspection: Before launching, someone must launch an investigation to find out the water depth, road width, water flow speed, the damage degree of water to the road, whether the water rises or falls, etc. According to the investigation of these situations, confirm whether there are conditions for vehicle traffic. Don't venture into the water if there are no conditions for safe passage. 2. Do a good job of protection: when it is confirmed that it can pass, make necessary protection for the vehicle, close the blinds and raise the position of the battery, make necessary waterproof treatment for the electrical system and try to raise the muffler outlet.