S.C. Code Ann. § 56-5-4010
It shall be unlawful for any person to drive or move or for the owner to cause or knowingly to permit to be driven or moved on any highway any vehicle of a size or weight exceeding the limitations stated in this article or otherwise in violation of this article. The maximum size and weight of vehicles herein specified shall be lawful throughout the State, and local authorities shall have no power or authority to alter such limitations except as express authority may be granted in this article. Provided, that municipalities and their franchisees may operate combinations of vehicles of not more than four units and not more than sixty-five feet in length on city streets within their corporate limits and the operation of such combinations of units shall be limited to speeds not in excess of twenty miles per hour, and such combination units shall be equipped with brakes meeting braking requirements of Section 56-5-4860 and the rear vehicle shall be equipped with at least one stoplight.
HISTORY: 1962 Code Section 46-651; 1952 Code Section 46-651; 1949 (46) 466; 1978 Act No. 411 Section 1.