Washington Administrative Code
Title 352 - Parks and Recreation Commission
Chapter 352-20 - Use of motor driven vehicles in state parks - Parking restrictions - Violations
Section 352-20-005 - Definitions

(1) "Motor vehicle" shall mean any self-propelled device capable of being moved upon a road, and in, upon, or by which any persons or property may be transported or drawn, and shall include, but not be limited to, automobiles, trucks, motorcycles, motorbikes, motor scooters, jeeps, or similar type 4-wheel drive vehicles, and snowmobiles, whether or not they can legally be operated upon the public highways.

(2) "Trail" shall mean any path or track designed for use of pedestrians or equestrians and which is not of sufficient width, nor graded or paved with concrete, asphalt, gravel, or similar substance, so as to permit its use by standard passenger automobiles; or any other right of way specifically designated and posted for nonvehicular use.