Minimum length of wheelbase.
RCW 46.44.050
in effectIt shall be unlawful to operate any vehicle upon public highways with a wheelbase between any two axles thereof of less than three feet, six inches when weight exceeds that allowed for one axle under RCW 46.44.042 or 46.44.041 . It shall be unlawful to operate any motor vehicle upon the public highways of this state with a wheelbase between the frontmost axle and the rearmost axle of less than three feet, six inches. For the purposes of this section, wheelbase shall be measured upon a straight line from center to center of the vehicle axles designated.
It shall be unlawful to operate any vehicle upon public highways with a wheelbase between any two axles thereof of less than three feet, six inches when weight exceeds that allowed for one axle under RCW 46.44.042 or 46.44.041 . It shall be unlawful to operate any motor vehicle upon the public highways of this state with a wheelbase between the frontmost axle and the rearmost axle of less than three feet, six inches.
For the purposes of this section, wheelbase shall be measured upon a straight line from center to center of the vehicle axles designated.
Source: WA Statutes (Official Site)URL: https://app.leg.wa.gov/RCW/default.aspx?cite=46.44&full=trueFetched: 6/29/2026