Mississippi Code Title 63. Motor Vehicles and Traffic Regulations § 63-7-69

(1) No person shall operate any truck or bus on any highway outside the limits of any municipality or residential section adjacent thereto between the hours of one half hour after sunset and one half hour before sunrise unless there be carried in such vehicle, ready for use, certain warning and safety appliances such as flares, fusees, flags, reflectors, fire extinguishers, and the like.

(2) The nature of such appliances, methods of their use, and standards of their quality, shall be prescribed by the department with the condition that no appliance shall be prescribed whose quality is below the standards as follows: for fire extinguishers and flares, the standards adopted by the Interstate Commerce Commission; for fusees, the standards adopted by the Bureau of Explosives; for lights and reflectors, the standards adopted by the Society of Automotive Engineers or the Illuminating Engineers Society; and for any other appliance, the standards adopted by a recognized research body in its respective line. The commissioner shall approve any of the appliances mentioned herein when such appliance has been approved by or meets the minimum standards adopted by either the Interstate Commerce Commission, the Bureau of Explosives, the Society of Automotive Engineers, the Illuminating Engineers Society, or any other recognized research body in its respective line, as the case may be.