R.I. Gen. Laws § 31-3-10: Issuance of registration plates.

The division of motor vehicles, upon registering a vehicle, shall issue to the owner one fully reflective registration plate for each motorcycle, trailer, semi-trailer, in-transit vehicle, transporter, bailee vehicle, or a dealer vehicle and two (2) fully reflective registration plates for every other motor vehicle. Application for and issuance of so-called commercial registration plates shall be provided at all offices maintained by the administrator of the division of motor vehicles under § 31-2-6.