Tennessee Code Title 55. Motor and Other Vehicles § 55-52-103

(1) “Bicycle” means a human-powered vehicle with two (2) wheels in tandem designed to transport, by the action of pedaling, one (1) or more persons seated on one (1) or more saddle seats on its frame. “Bicycle” also includes a human-powered vehicle designed to transport by pedaling that has more than two (2) wheels where the vehicle is used on a public highway or street, public bicycle path or other public right-of-way, but does not include a tricycle;

(2) “Highway” or “street” means the entire width between boundary lines of every way publicly maintained, when any part thereof is open to the use of the public for purposes of vehicular travel;

(3) “Operator” means a person who travels on a bicycle seated on a saddle seat from which that person is intended to and can pedal the bicycle;

(4) “Other public right-of-way” means any right-of-way other than a public highway or street or public bicycle path that is under the jurisdiction and control of the state or a local political subdivision thereof and is designed for use and used by vehicular and/or pedestrian traffic;

(5) “Passenger” means any person who travels on a bicycle in any manner except as an operator;

(6) “Protective bicycle helmet” means a piece of headgear that meets or exceeds the impact standards for protective bicycle helmets set by the American National Standards Institute (ANSI) or the Snell Memorial Foundation, or that is otherwise approved by the commissioner of safety;

(7) “Public bicycle path” means a right-of-way under the jurisdiction and control of the state or a local political subdivision thereof for use primarily by bicycles and pedestrians;

(8) “Restraining seat” means a seat separate from the saddle seat of the operator of the bicycle that is fastened securely to the frame of the bicycle and is adequately equipped to restrain the passenger in the seat and protect the passenger from the moving parts of the bicycle;

(9) “Sidewalk” means that portion of a street between the curb lines, or the lateral lines of a roadway, and the adjacent property lines, intended for use of pedestrians; and

(10) “Tricycle” means a three-wheeled human-powered vehicle.