61-8-312 . Special speed limitations on trucks, truck tractors, and motor-driven cycles. (1) Except as provided in 61-8-303 , 61-8-309 , 61-8-310 , and subsection (2) of this section, the speed limit for a truck or truck tractor of more than 1 ton "manufacturer's rated capacity" traveling on: (a) an interstate highway, as defined in 60-1-103 , is 70 miles an hour; and (b) any other public highway is 65 miles an hour. (2) Except as provided in 61-8-303 , 61-8-309 , and 61-8-310 , the speed limit for a vehicle subject to a term permit under 61-10-124 (2)(d) or a truck-trailer-trailer or truck tractor-semitrailer-trailer-trailer combination of vehicles subject to special permits under 61-10-124 (3) is 65 miles an hour unless otherwise stated in the permit. (3) A person may not operate a motor-driven cycle at any time mentioned in 61-9-201 at a speed greater than 35 miles an hour unless the motor-driven cycle is equipped with a headlamp or lamps that are adequate to reveal a person or vehicle at a distance of 300 feet ahead. (4) A person who violates this section is subject to the penalties provided in 61-8-725 .
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