Washington Revised Code Title 46. Motor Vehicles § 46.20.109. Wheelchair conveyances

Each operator of a wheelchair conveyance shall undergo a special examination conducted for the purpose of determining whether that person can properly and safely operate the conveyance on public roadways within a specified area. An operator's license issued after the special examination may specify the route, area, time, or other restrictions that are necessary to ensure the safety of the operator as well as the general motoring public. The department shall adopt rules for periodic review of the performance of operators of wheelchair conveyances. Operation of a wheelchair conveyance in violation of these rules is a traffic infraction.