S.C. Code Ann. § 56-1-2156: Failure of commercial motor vehicle drivers to comply with lane restrictions.

Notwithstanding any other provision of law, a commercial motor vehicle driver may not be assessed points against his driving record for failing to comply with lane restrictions posted on the interstate highway system by the Department of Transportation. For purposes of this section, a driver record means a commercial driver's license issued pursuant to Article 13, Chapter 1 of Title 56 and a driver's license issued pursuant to Section 56-1-130 for which points are assessed in Section 56-1-720.