Wash. Admin. Code § 132R-118-020
A bicycle shall be, for the purposes of this section, any vehicle with three or less wheels and containing a saddle seat, and which is not motor driven. Any vehicle with three or less wheels and containing a saddle seat, and which is motor driven is considered a motorcycle or motorscooter for the purposes of this section. Any vehicle with ski(s) and a track-type drive designed for travel over snow is considered a snowmobile for the purposes of this section. Any unit consisting of a board with two or more wheels attached to the underside that is propelled by the use of a persons foot is considered a skateboard for this section. For the purposes of this section, any shoe-skate with four wheels is considered a skate, and any shoe-skate with three or more wheels attached in a straight line is considered an in-line skate. Any vehicle with three or four wheels and containing a saddle-type seat, which is motor driven is considered an all-terrain vehicle for the purpose of this section.
Wash. Admin. Code § 132R-118-020
Statutory Authority: RCW 28B.50.140 and chapter 34.05 RCW. 03-15-063, § 132R-118-020, filed 7/14/03, effective 8/14/03. Statutory Authority: RCW 28B.50.140. 90-02-019, § 132R-118-020, filed 12/26/89, effective 1/26/90; Order 73-4, § 132R-118-020, filed 3/23/73.