Section 39-21-28 - Standards for lights on snow-removal or other hazardous equipment1. The director shall adopt standards and specifications applicable to headlamps, clearance lamps, identification and other lamps on snow-removal or other hazardous equipment when operated on the highways of this state in lieu of the lamps otherwise required on motor vehicles by this chapter. Such standards and specifications may permit the use of flashing lights for purposes of identification on snow-removal equipment when in service upon the highways. The standards and specifications for lamps referred to in this section must correlate with and, so far as possible, conform with those approved by the American association of state highway officials.2. It is unlawful to operate any snow-removal equipment on any highway unless the lamps thereon comply with and are lighted when and as required by the standards and specifications adopted as provided in this section.