C.R.S. § 42-20-303: Road signs required - uniform standards.

Signs giving adequate notice of route designations shall be placed and maintained along public roads affected by such designations. In accordance with part 6 of article 4 of this title and section 42-4-105, the department of transportation shall adopt uniform standards for highway signs giving notice of route designations. The requirements of this section shall not apply to jurisdictions in which the governmental authority has provided the patrol with professional quality maps which indicate the route designations in that jurisdiction.