S.C. Code § 57-1-60
The Governor, in addition to other duties and responsibilities conferred upon him by the Constitution and laws of this State, is charged with the responsibility for the administration of the state's highway safety programs and is further charged with the duty of contracting and doing all other things necessary on behalf of this State and, in so doing, to work with federal and state agencies, agencies private and public, interested organizations, and with individuals to effectuate that purpose. The Governor shall be the official of this State having the ultimate responsibility for dealing with the federal government with respect to highway safety transportation programs and activities. To that end the Governor shall coordinate the activities of any and all departments and agencies of this State and its subdivisions.
S.C. Code § 57-1-60