27 CAR § 132-1001. General requirements for sign installation on the state highway system

(a) All signs shall be erected and maintained by a public officer or agency. (b) A city or county may authorize a group to erect and maintain the sign on its behalf. (c) Signs shall not be installed on fully controlled access highways such as interstates and freeways. (d) No more than one (1) sign per direction will be permitted on each route. (e) No sign will be allowed to indicate when leaving the city or county. (f) The sign cannot imitate or resemble traffic control devices governed by the MUTCD. (g) The sign cannot contain any: (1) Commercial message; (2) Business name; (3) Organization; (4) Product identification; (5) Civic group; (6) Sponsor; (7) Official; or (8) Other identification that could be perceived as private advertising. (h) Overhead signs/structures shall not be permitted. (i) Sign requests originated by organizations or persons other than the local government will not be considered. (j) Signs shall not be allowed in a roadway median. (k) Signs for other governmental or quasi-governmental entities including, but not limited to, water management districts, school districts, voting districts, and fire districts shall not be permitted.