Every vehicle, including animal-drawn vehicles and vehicles referred to in § 4355(c) of this title, not specifically required by this subchapter to be equipped with lamps or other lighting devices, shall at all times specified in § 4331 of this title be equipped with at least 1 lamp displaying a white light visible from a distance of not less than 500 feet to the front of said vehicle and shall also be equipped with 2 lamps displaying red light visible from a distance of not less than 500 feet to the rear of said vehicle, or as an alternative, 1 lamp displaying a red light visible from a distance of not less than 500 feet to the rear and 2 red reflectors visible for distances of 100 to 600 feet to the rear when illuminated by the upper beams of head lamps.