S.C. Code § 56-3-662
The Department of Motor Vehicles shall charge a fee of five dollars for each identifier. The five-dollar identifier fee must be remitted to the general fund. The Department of Motor Vehicles may promulgate regulations pursuant to this section. The five-dollar fee collected pursuant to this section must be placed in a special restricted account by the Comptroller General to be used by the Department of Public Safety for the administration and enforcement of the provisions contained in Articles 3 and 5 of Chapter 23, Title 58, and for the building or renovation of weigh stations. All unexpended funds from prior years collected under this section may be retained and carried forward by the Department of Public Safety and used for these purposes.
S.C. Code § 56-3-662