If I don't see enough of the road in front of me I will certainly stay behind a slower car.
In driving school we learn you have to drive on sight or even on half sight, depending on the situation, and in dense fog you drive on half sight - slow enough to be able to stop the car in half the distance you see.
Some stupid people don't care, of course, they don't care that they are a danger for other people.
Cheers and !BEER
!invest_vote