When visibility is less than 100 meters, what should the speed and distance between vehicles be maintained at?

[OCaroline]

When visibility is less than 100 meters, the speed should not exceed 40 kilometers per hour, and the distance between vehicles should be maintained at more than 50 meters. Below is more relevant information: 1. Precautions for driving on highways: Enter the traffic lane correctly. When vehicles enter the highway from the ramp entrance, they must increase their speed in the acceleration lane and turn on the left turn signal. They can enter the traffic lane from the acceleration lane without affecting the normal driving of vehicles in the traffic lane, and then turn off the turn signal. Maintain a safe distance. When driving at high speed, the following vehicle in the same lane must maintain a sufficient safe distance from the vehicle in front. Overtake with caution. When overtaking is necessary, first observe the status of the vehicles in front and behind, and turn on the left turn signal at the same time. 2. Relevant regulations: When visibility is less than 200 meters, turn on the fog lights, low beam lights, position lights, and front and rear position lights. The speed should not exceed 60 kilometers per hour, and the distance from the vehicle in front in the same lane should be more than 100 meters. When visibility is less than 50 meters, turn on the fog lights, low beam lights, position lights, front and rear position lights, and hazard warning flashers. The speed should not exceed 20 kilometers per hour, and the vehicle should exit the highway from the nearest exit as soon as possible.