Tenn. Code Ann. § 11-11-116

The department, in consultation with appropriate governmental agencies, and public and private organizations shall establish a uniform marker for trails contained in the system. An additional appropriate symbol characterizing specific trails may be included on the marker. The markers shall be placed at all access points, together with signs indicating the modes of locomotion that are prohibited for the trail. Where the trail constitutes a portion of a national scenic trail, use of the national scenic trail uniform marker shall be considered sufficient. The route of the trail and the boundaries of the right-of-way shall be marked with paint or other simple means.