S.C. Code Ann. § 58-17-2720

All railroad corporations doing business in this State shall receive from, deliver to and handle with connecting lines at each of its junctions or terminal points in this State all cars or trains bound to or from any point upon its own line or beyond upon the same terms and upon the same charges, either by way of trackage or by way of its proportion of the entire rate charged upon such cars, trains or freight, that it charges or demands either under the law or by contract or agreement with any other railroad connecting with it at such junction or terminal point where it performs the same or similar service for each of such railroads and shall furnish the same facilities to each of such railroads.