S.C. Code Ann. § 56-3-16410

The Department of Motor Vehicles may issue "Hearing Impaired" special motor vehicle license plates to owners of private passenger-carrying motor vehicles or motorcycles registered in their names who are hearing impaired. The application for this special motor vehicle license plate must include an original certificate from a licensed physician, as defined in Section 40-75-5, that certifies that the applicant has a permanent, uncorrectable hearing loss of forty decibels or more in one or both ears. The fee for each special license plate is the regular motor vehicle license fee set forth in Article 5. The department may issue this special license plate six months following approval of its design. Each special license plate must be of the same size and general design of regular motor vehicle license plates. Each special license plate must be issued or revalidated for a biennial period which expires twenty-four months from the month the special license plate is issued.