R.I. Gen. Laws § 31-1-8: Farm vehicle.

“Farm vehicle” means every vehicle which is designed for and used for agricultural purposes and used by the owner of the vehicle or family member(s) or employee(s) or designees of the owner, in the conduct of the owner’s agricultural operations, which use shall include the delivery of agricultural products produced by the farmer but shall not include commercial hire for nonagricultural uses, including, but not limited to, hauling of sand and gravel, snow plowing, land clearing for other than agricultural purposes or directly on the vehicle owner’s farm, and landscaping. For an owner to qualify as having agricultural purposes, the owner shall provide evidence that he or she meets the requirements of § 44-18-30.