For the sole purpose of the classification of vehicles as provided in Sections 1-107.1 through 1-107.4 of this title, a recreational vehicle shall be deemed to be a Class D motor vehicle, provided such vehicle is a self-propelled or towed vehicle that is equipped to serve as temporary living quarters for recreational, camping or travel purposes and is used solely as a family or personal conveyance.
Okla. Stat. tit. 47, § 1-152.1