S.C. Code § 57-23-60
The committee shall select a chairman at its first meeting and meet at least twice annually. A majority of the members present constitute a quorum for purposes of conducting business. Pursuant to Chapter 23 of Title 1 of the 1976 Code, the committee shall promulgate criteria for the designation of a scenic highway. The regulation must provide that a recommendation to establish a scenic highway be forwarded to the General Assembly for approval. In developing the criteria the committee shall consider the scenic, cultural, historic, commercial, and economic significance of the road and area. The committee shall coordinate development of these criteria in conjunction with the criteria for scenic highways being developed by the federal highway administration.
S.C. Code § 57-23-60