S.C. Code Ann. § 58-23-20: Transportation by motor vehicle for compensation regulated.

No corporation or person, his lessees, trustees, or receivers may operate a motor vehicle for the transportation of persons, hazardous waste for disposal, or household goods for compensation on an improved public highway in this State except in accordance with the provisions of this chapter, except where the use of a motor vehicle is incidental only to the operation, and any such operation is subject to control, supervision, and regulation by the commission in the manner provided by this chapter. The commission may not fix or approve the rates, fares, or charges for Class A, B, C, D, E, or F certificates.