R.I. Gen. Laws § 27-9-38
The commissioner shall promulgate reasonable rules and statistical plans reasonably adapted to each of the rating systems on file with the commissioner, which may be modified and which shall be used after this by each insurer in the recording and reporting of its loss and country wide expense experience, in order that the experience of all insurers may be made available at least annually in a form and detail as may be necessary to aid him or her in determining whether rating systems comply with the standards set forth in §§ 27-9-4 - 27-9-6. Those rules and plans may also provide for the recording and reporting of expense experience items which are specially applicable to the state and are not susceptible of determination by a prorating of country wide expense experience. In promulgating those rules and plans, the commissioner shall give due consideration to the rating systems on file with him or her and, in order that those rules and plans may be as uniform as is practicable among the several states, to the rules and to the form of the plans used for the rating systems in other states. No insurer shall be required to record or report its loss experience on a classification basis that is inconsistent with the rating system filed by it. The commissioner may designate one or more rating organizations or other agencies to assist the commissioner in gathering that experience and making compilations of it, and those compilations shall be made available, subject to reasonable rules promulgated by the commissioner, to insurers and rating organizations.
R.I. Gen. Laws § 27-9-38