Tennessee Code Title 11. Natural Areas and Recreation § 11-11-105

(1) State scenic trails shall traverse mostly scenic and natural areas and shall be of sufficient length that they cannot be traveled in one (1) day or less. Scenic trails shall be narrow paths causing the minimum disturbance to the natural environment, and shall be restricted to foot travel, with all other modes of locomotion prohibited, except as set forth in §§ 11-11-104(1) and 11-11-114; and

(2) Horse and bicycle trails shall have a surface and overhead clearance appropriate for their designated mode of locomotion. Motorized vehicles of any kind shall be barred from foot, horse, and bicycle trails, except as set forth in § 11-11-114.