158-45 SLOW-MOVING-VEHICLE EMBLEMS
A. Every farm tractor and every self-propelled unit of farm equipment or implement of husbandry, and any other vehicle designed for operation at speeds not in excess of twenty-five (25) miles per hour or normally operated at speeds not in excess of twenty-five (25) miles per hour, shall display a triangular, slow-moving-vehicle emblem on the rear of the vehicle when traveling on a public highway during day or night.
B. Should a slow-moving vehicle tow a unit on a public highway, the towing vehicle or the towed unit shall be equipped with a slow-moving-vehicle emblem, as follows:
1. If the towed unit or any load thereon obscures the slow-moving-vehicle emblem on the towing vehicle, the towed unit shall be equipped with a slow-moving-vehicle emblem, in which case the towing vehicle need not display such emblem.
2. If the slow-moving-vehicle emblem on the towing vehicle is not obscured by the towed unit or any load thereon, either or both such vehicles may be equipped with such emblem.
C. The Department of State Police shall adopt standards and specifications for the slow-moving-vehicle emblem and the position of mounting of the emblem to correlate with and, so far as possible, conform with those adopted by the American Society of Automotive Engineers.
D. The use of the slow-moving-vehicle emblem shall be restricted to the uses specified in Subsections A and B of this section, and their use on any other type of vehicle or on stationary objects is prohibited.