Tennessee Code Title 47. Commercial Instruments and Transactions § 47-18-3202

(1) “Authorized vehicle immobilization device operator” or “operator” means a person authorized by a political subdivision of this state to be engaged in the business of installing vehicle immobilization devices within the jurisdictional area of the political subdivision;

(2) “Engaged in the business of installing vehicle immobilization devices” means installing or removing vehicle immobilization devices on motor vehicles in exchange for monetary payment or other valuable consideration, whether such payment or consideration is received for the installation or the removal of the vehicle immobilization device;

(3) “Person” means an individual, sole proprietor, independent contractor, partnership, corporation, or similar business entity;

(4) “Political subdivision” means a municipality, public corporation, body politic, authority, district, metropolitan government, county, or an agency, department, or board of such entities; and

(5) “Vehicle immobilization device” means a mechanical device that is designed or adapted to be attached to a wheel, tire, or other part of a parked motor vehicle to prohibit the motor vehicle's usual manner of movement or operation.