S.C. Code Ann. § 1-11-280: Division of General Services, Program of Fleet Management; interagency motor pools.

The department shall develop a system of agency-managed and interagency motor pools which are, to the maximum extent possible, cost beneficial to the State. All motor pools shall operate according to regulations promulgated by the department. Vehicles shall be placed in motor pools rather than being individually assigned except as specifically authorized by the department in accordance with criteria established by the department. Agencies utilizing motor pool vehicles shall utilize trip log forms approved by the department for each trip, specifying beginning and ending mileage and the job function performed.

The provisions of this section shall not apply to school buses and service vehicles.