Tennessee Code Title 54. Highways, Bridges and Ferries § 54-17-107

(a) Once the general assembly designates a highway or road or a portion of the highway or road as a scenic highway, the state or local agency having jurisdiction of the highway shall erect appropriate signs marking the designation, in accordance with the rules and regulations authorized to be promulgated, from funds appropriated by the general assembly for that purpose. The signs shall conform to standards established by the comprehensive statewide scenic highway plan; furthermore, the state or local agency having jurisdiction over the particular scenic highway shall provide proper marking, maintenance, and refuse removal services in connection with the highway.

(b) The department of tourist development shall study each newly designated scenic highway with the intention of including it in state and national promotional campaigns. In no instance may scenic highways be promoted through advertisement on any sign, structure or advertising device other than signs used for marking scenic highways by the department of transportation or local agency having jurisdiction.

(c) The department of economic and community development shall act to coordinate the efforts of local planning commissions, development districts, chambers of commerce, convention and visitors bureaus, and other federal, state, local, and private organizations in continuing the promotion and development of the scenic highway system.