No person shall drive a motor vehicle on a highway in the Commonwealth if the vehicle is not equipped with a mirror which reflects to the driver a view of the highway for a distance of not less than 200 feet to the rear of such vehicle. No motor vehicle registered in the Commonwealth, designed and licensed primarily for passenger vehicular transportation on the public highways and manufactured after 1968 shall be driven on the highways in the Commonwealth unless equipped with at least one outside and at least one inside rear view mirror meeting the requirements of this section. Notwithstanding the other provisions of this section, no motor vehicle which either has no rear window, or which has a rear window so obstructed as to prevent rearward vision by means of an inside rear view mirror, shall be required to be equipped with an inside rear view mirror if such motor vehicle has horizontally and vertically adjustable outside rear view mirrors installed on both sides of such motor vehicle in such a manner as to provide the driver of such motor vehicle a rearward view along both sides of such motor vehicle for at least 200 feet.