As used in this part, unless the context otherwise requires:(1) 'Motor vehicle' means any self-propelled vehicle, including a truck, truck tractor, motor bus, or other vehicle not operated exclusively or driven on fixed rails or tracks; and(2) 'Unattended child' means a child younger than seven (7) years of age who is not accompanied by another person who is at least thirteen (13) years of age. Acts 2007, ch. 214, § 3.
Tennessee Legal Code