Whenever a vehicle is parked or stopped on a street during the times between sunset to sunrise, or at any other time when there is not sufficient light to render clearly discernible any vehicle on the street from a distance of two hundred feet (200'), lights shall be displayed upon such vehicle, one of which shall be on the roadway side and project a white light or lights of yellow or amber tint, visible under normal atmospheric conditions from a distance of two hundred feet (200') to the front of such vehicle, and one of which lights shall project a red light visible under like conditions from a distance of two hundred feet (200') to the rear. Such parking lights need not be displayed upon any vehicle legally stopped or parked upon any street where there is sufficient light to reveal such vehicle to any person within two hundred feet (200') upon such street. (1976 Code § 41.21)