Tail lamps and reflectors. (a)(1) Every motor vehicle, trailer, semitrailer, and pole trailer, and any other vehicle which is being drawn at the end of a train of vehicles, shall be equipped with at least one (1) tail lamp mounted on the rear, which, when lighted as required, shall emit a red light plainly visible from a distance of five hundred feet (500') to the rear. (2) In the case of a train