R.I. Gen. Laws § 44-18.1-3: State and local tax bases.

Through December 31, 2005, if a member state has local jurisdictions that levy a sales or use tax, all local jurisdictions in the state shall have a common tax base. After December 31, 2005, the tax base for local jurisdictions shall be identical to the state tax base unless otherwise prohibited by federal law. This section does not apply to sales or use taxes levied on the retail sale or transfer of motor vehicles, aircraft, watercraft, modular homes, manufactured homes, or mobile homes.