What is the safe following distance on highways?

[MasonLynn]

Highway safe following distance is: According to the Implementation Regulations of the Road Traffic Safety Law, when a motor vehicle is driving on the highway at a speed exceeding 100 kilometers per hour, it should maintain a distance of more than 100 meters from the vehicle in front in the same lane. When the speed is below 100 kilometers per hour, the distance from the vehicle in front can be appropriately reduced, but the minimum distance should not be less than 50 meters. The following distance includes two aspects: one is the front and rear distance between vehicles, and the other is the lateral distance when two vehicles are parallel during overtaking. On highways, following distance measurement signs appear at regular intervals, where 0m to 50m indicates a 50-meter interval, and 0m to 100m indicates a 100-meter interval.