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SC Trailer Laws Regulations South Carolina Trailer Laws & Trailer Regulations

South Carolina's laws and regulations for trailers are listed below:


South Carolina Trailer Brake Laws

Every combination of vehicles must be equipped with service brakes that are capable and adequate to control the movement of and to stop and hold the vehicle with any load and on any grade on which it is operated.

Every vehicle manufactured or assembled after June 7, 1949 must be equipped with brakes on all wheels except trailers and semitrailers of a gross weight less than 3,001 lbs. as long as the total weight on and including the wheels of the trailers does not exceed 40% of the gross weight of the towing vehicle when connected to the trailer.

Every motor vehicle manufactured after July 1, 1964 and used to tow a trailer or semitrailer must be equipped with a means for providing that the towing vehicle is capable of being stopped by the use of its service brakes.

Every motor vehicle, trailer, or semitrailer must be equipped with brakes that have a braking system arranged so that 1 control device can be used to operate all service brakes.



South Carolina Trailer Dimension Laws

Total length: not specified; trailer length: 48 feet; width: 102 inches (allows total width to exceed 102 inches if the excess is due to an appurtenance); height: 13 feet 6 inches.



South Carolina Trailer Hitch and Signal Laws

Drawbar or other connection must be of sufficient strength to pull all weight towed. Drawbar or other connection must not exceed 15 feet from 1 vehicle to the other except when transporting objects which cannot readily be dismembered. When 1 vehicle is towing another vehicle and the connection consists of a chain, rope, or cable, there must be displayed upon such connection a white flag or cloth not less than 12 inches square. 



South Carolina Trailer Lighting Laws

Tail, license plate, and brake lights are required. Turn signals and reflectors are also required.



South Carolina Trailer Mirror Laws

Every motor vehicle that is constructed or loaded so that the driver’s rear view is obstructed, the driver’s position must be equipped with a rearview mirror that reflects the driver’s view of the highway for at least 200 feet.



South Carolina Trailer Speed Limit Laws

Manufactured, modular, or mobile homes must not be transported at a speed in excess of 10 miles below the maximum posted speed limit when the maximum posted speed limit is in excess of 45 mph, and never in excess of 55 mph.

A person driving a vehicle towing a house trailer must not drive faster than 45 mph.



South Carolina Trailer Towing Laws





The United States Trailer Laws and Regulations by State by is not an inclusive list of laws, regulations and it should be used by reference only and not used for any other purpose. is not liable for incorrect or incomplete information. To report an error, incomplete or incorrect information, please send an email to





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