S.C. Code § 57-1-370
2007 Act No. 114, Section 8, provides as follows:
"The Department of Transportation is authorized and directed to promulgate regulations to implement the policies and purposes of this act including, but not limited to, regulations concerning the chief internal auditor, approval of projects by the commission pursuant to Section 57-1-370(N), and the secretary's approval of routine operations and maintenance and emergency repairs requests. All regulations promulgated pursuant to this section must be reviewed and approved by the Department of Transportation Commission before they are submitted to the General Assembly for consideration."