S.C. Code Regs. § § 103-36
Whenever in the judgment of the Public Service Commissioners it shall appear that repairs are necessary upon any railroad in this State, or that any addition to the rolling stock, or that any enlargement of, or improvement in, the stations or station houses, or any changes in the mode of operating the road and conducting its business, is reasonable and expedient, in order to promote the security, convenience and accommodation of the public, they shall give information in writing to the railroad company of the improvements and changes which they adjudge to be proper, and if said company shall fail, within sixty (60) days, to adopt the suggestion of said Commissioners, they will take such legal proceedings, as they may deem expedient.
S.C. Code Regs. § 103-36