Wash. Rev. Code § 46.04.332
"Motor-driven cycle" means every motorcycle, including every motor scooter, with a motor that produces not to exceed five brake horsepower (developed by a prime mover, as measured by a brake applied to the driving shaft). A motor-driven cycle does not include a moped, a power wheelchair, a motorized foot scooter, or an electric personal assistive mobility device.
RCW 46.04.332
Reviser's note: This section was amended by 2003 c 141 s 4 and by 2003 c 353 s 7, each without reference to the other. Both amendments are incorporated in the publication of this section under RCW 1.12.025(2). For rule of construction, see RCW 1.12.025(1).
Effective date-2003 c 353: See note following RCW 46.04.320.
Legislative review-2002 c 247: See note following RCW 46.04.1695.
Effective date-1963 c 154: See note following RCW 46.37.010.