Mich. Comp. Laws § 257.49a

Sec. 49a. "Recreational vehicle" means a new or used vehicle that has its own motive power or is towed by a motor vehicle; is primarily designed to provide temporary living quarters for recreational, camping, travel, or seasonal use; complies with all applicable federal vehicle regulations; and does not require a special highway movement permit under section 719a to be operated or towed on a street or highway. The term includes, but is not limited to, a motor home, travel trailer, park model trailer that does not require a special highway movement permit under section 719a, or pickup camper.