S.C. Code Regs. 38-382.503. Required evaluation and testing

No driver who has engaged in conduct prohibited by subpart B of 38-382 shall perform safety-sensitive functions, including driving a commercial motor vehicle, unless the driver has met the requirements of part 40. subpart O. No employer shall permit a driver who has engaged in conduct prohibited by subpart B of 38-382 to perform safety-sensitive functions, including driving a commercial motor vehicle, unless the driver has met the requirements of part 40, subpart O.