(625 ILCS 5/1-153.1)
(from Ch. 95 1/2, par. 1-153.1)
Any motorized device designed
to travel primarily off-highway on 2 wheels, having a seat or saddle for
the use of the operator, upon or by which any person, persons or property
may be transported or drawn.
(Source: P.A. 85-830.)