S.C. Code Regs. § § 103-240
The commission may at any time, after notice and opportunity to be heard, suspend, revoke, alter, or amend any certificate, if it shall be made to appear that the holder has willfully violated or refused to observe orders, rules, or regulations prescribed by the commission, provisions of the Motor Vehicle Carrier Law, or any other law of this State regulating motor carriers for hire and applicable to the holder of such certificate, or, if, in the opinion of the commission, the motor carrier holding a Certificate of PC&N is not furnishing adequate service or it is no longer compatible with the public interest to continue said certificate in force, or, if in the opinion of the commission, the motor carrier holding a Certificate of FWA is no longer furnishing adequate service, or said carrier no longer meets the fit, willing, and able criteria, or the motor carrier holding a charter bus certificate no longer meets the commission's insurance requirements or the safety requirements of the Department of Public Safety, or the continuance of said certificates are not in conformity with the spirit and purpose of the law, provided, however, that this rule shall have no effect upon rules hereinbefore set forth which authorize suspension, revocation, alteration, or amendment of a certificate or of an order granting operating rights without hearing where certain conditions exist.
S.C. Code Regs. § 103-240