(a) The driver of a vehicle shall not follow another vehicle more closely than is reasonable and prudent, having due regard for the speed of the vehicles and the traffic upon and the condition of the highway.
(b) The driver of any vehicle when traveling upon a roadway outside of a business or residence district, and which is following another vehicle shall, whenever conditions permit, leave sufficient space so that an overtaking vehicle may enter and occupy the space without danger.
(c) Motor vehicles being driven upon any roadway outside of a business or residence district in a caravan or motorcade whether or not towing other vehicles shall be so operated as to allow sufficient space between each vehicle or combination of vehicles so as to enable any other vehicle to enter and occupy such space without danger. This provision shall not apply to funeral processions.