In this chapter:
(1) "Bus" means a motor vehicle that is designed, constructed, and used to transport passengers. The term does not include a passenger automobile or a station wagon other than a taxicab.
(2) "Highway" has the meaning assigned by Section 541.302.
(3) "Migrant agricultural worker" means a person who:
(A) performs or seeks to perform farm labor of a seasonal nature, including labor necessary to process an agricultural food product; and
(B) occupies living quarters other than the individual's permanent home during the period of employment.
(4) "Motor vehicle" means any vehicle, machine, tractor, trailer, or semitrailer propelled or drawn by mechanical power and used on a highway to transport passengers or property or both. The term does not include:
(A) a vehicle, locomotive, or car that operates exclusively on one or more rails; or
(B) a trolley bus that operates on electricity generated from a fixed overhead wire and that provides local passenger transportation in street-railway service.
(5) "Operator" means a person who operates a motor vehicle.
(6) "Semitrailer" has the meaning assigned by Section 541.201.
(7) "Truck" has the meaning assigned by Section 541.201.
(8) "Truck tractor" has the meaning assigned by Section 541.201.