Washington Revised Code Title 46. Motor Vehicles § 46.09.460. Operation by persons under sixteen

(1) Except as specified in subsection (2) of this section, no person under sixteen years of age may operate an off-road vehicle on or across a highway or nonhighway road in this state without direct supervision of a person eighteen years of age or older possessing a valid license to operate a motor vehicle under chapter 46.20 RCW. This prohibition does not apply when a person under sixteen years of age is acting in accordance with RCW 46.09.420 (5) and (7).

(2) Persons under sixteen years of age may operate an off-road vehicle across a highway, if at that crossing signs indicate that wheeled all-terrain vehicles or off-road vehicles may be crossing, or on a nonhighway road designated for off-road vehicle use, under the direct supervision of a person eighteen years of age or older possessing a valid license to operate a motor vehicle under chapter 46.20 RCW.

(3) This section does not apply to vehicles used in the production of agricultural or timber products on and across lands owned, leased, or managed by the owner or operator of a wheeled all-terrain vehicle or the operator's employer.