S.C. Code § 47-9-50
It shall be unlawful for any person to load or haul by truck any cattle or swine between the hours of sunset and sunrise, unless such person shall have first applied to the sheriff or magistrate of the district in which it is desired to load such cattle or swine to be hauled or shipped and obtained a written permit to do so. Such permit shall show the name of the permittee, the name of the person from whom the cattle or swine have been purchased or otherwise acquired and a description of such cattle or swine, including marks and brands. All such persons loading or hauling cattle or swine under such permits shall keep the permits on their person during such time and upon signal to stop given by any county or State officer shall stop and upon request shall exhibit such permit. Provided, that a permit shall not be necessary when a bill of sale is issued within twenty-four hours after a purchase at an organized auction sale. Provided, further, that livestock moving intrastate or interstate that has a freight bill or bill of sale shall not be required to obtain a permit. Loading or transporting any cattle or swine in violation of the provisions of this section shall be a misdemeanor punishable by a fine of not more than one hundred dollars or by a sentence on the public works of the county not exceeding thirty days.
S.C. Code § 47-9-50