R.I. Gen. Laws § 39-14-2.1
Every taxicab or limited public motor vehicle shall file with the public utilities administrator current schedules that shall be open to public inspection, showing all rates, tolls, and charges it has established and that are in force at the time for any service performed by it within the state, or for any service in connection therewith or performed by any taxicab or limited public motor vehicle controlled or operated by it. A copy of so much of the schedules as the administrator shall deem necessary for the use of the public shall be printed in plain type or typewritten, and kept on file in every station or office of the taxicab or limited public motor vehicle, open to the public in such form and place as to be readily accessible and conveniently inspected, as the administrator may order. The administrator may determine and prescribe the form in which the schedules, required by this section to be kept open to public inspection, shall be prepared and arranged.
R.I. Gen. Laws § 39-14-2.1