The following definitions shall apply in this chapter:
DEPARTMENT: The department of justice of the state of Montana acting directly or through its duly authorized officers or agents.
MOTOR VEHICLE: Any vehicle propelled by its own power and designed primarily to transport persons or property upon the highways of the state and also includes trailers, semitrailers, and house trailers.
VEHICLE: Any device in, upon, or by which any person or property may be transported or drawn upon a public highway. It also means "motor vehicle", as defined in this section. (Ord. 386, 9-16-1991)