S.C. Code Ann. § 58-23-930: Insurance not required of owners of certain motor vehicles subject to federal Surface Transportation Board.

No owner of a motor vehicle using such vehicle as part of a terminal service in connection with the business of transporting goods by rail shall be required to carry liability or property damage insurance on such motor vehicle if such business of such owner is under the jurisdiction of the federal Surface Transportation Board and if the Surface Transportation Board has required and does require such owner to set up insurance reserves covering liability resulting from the conduct of such business, including liability arising out of and in connection with the operation of such motor vehicle and if such insurance reserves have been and are actually so set up.

The owner of such a motor vehicle shall attach inside of the cab of such vehicle in a conspicuous place a certificate signed by such owner, or his duly authorized representative, setting forth that the business of such owner is under the jurisdiction of the federal Surface Transportation Board and that such board has required and does require such owner to set up insurance reserves.