§17C-15-28. Selling and using unapproved lamps or equipment; legibility of name, etc., of approved equipment; use of improperly mounted, etc., equipment.

(a) No person shall have for sale, sell, or offer for sale for use upon or as a part of the equipment of a motor vehicle, trailer, or semitrailer, or use upon any such vehicle any head lamp, auxiliary, or fog lamp, rear lamp, signal lamp, or reflector, which reflector is required hereunder, or parts of any of the foregoing which tend to change the original design or performance, unless of a type which has been submitted to the state road commissioner and approved by him The foregoing provisions of this section shall not apply to equipment in actual use when this section is adopted or replacement parts therefor, provided that such equipment complies with the laws relating thereto prior to the enactment hereof.

(b) No person shall have for sale, sell, or offer for sale for use upon or as a part of the equipment of a motor vehicle, trailer, or semitrailer any lamp or device mentioned in this section which has been approved by the state road commissioner unless such lamp or device bears thereon the trademark or name under which it is approved so as to be legible when installed.

(c) No person shall use upon any motor vehicle, trailer, or semitrailer any lamps mentioned in this section unless said lamps are mounted, adjusted and aimed in accordance with instructions of the state road commissioner.