S.C. Code § 58-17-3030
The Office of Regulatory Staff must, from time to time, examine into the schedules of all the railroads in this State for the carriage of passengers, with a view to ascertaining if the roads can reasonably make close connection with intersecting roads and wherever, in its opinion, close connection can be made without injustice or material injury to any road it shall make the appropriate orders to require such connection. And, to better secure connections, upon petition of the Office of Regulatory Staff, the commission may require all persons operating railroads, except those in the hands of receivers, to run at least one unmixed daily passenger train each way over the railroad and may likewise require those persons to furnish to the traveling public facilities for passage over the railroads twice each way daily. A road may appeal an order of the commission as in cases of appeals from inferior courts.
S.C. Code § 58-17-3030