R.I. Gen. Laws § 27-6-29
Every member of or subscriber to a rating organization shall adhere to the filings made on its behalf by the organization; except that any insurer which is a member or subscriber may file with the commissioner a deviation from the class rates, schedules, rating plans, or rules respecting any kind of insurance or class of risk within a kind of insurance or combination of it. The deviation filing shall specify the basis for the modification and a copy shall also be sent simultaneously to the rating organization. Any deviation filing shall be on file for a waiting period of thirty (30) days before it becomes effective unless the commissioner reviews and authorizes the filing to become effective before the expiration of that period and shall be subject to the provisions of §§ 27-6-17 - 27-6-22. Each deviation shall be effective for a period of not less than one year from the date the deviation is filed unless terminated with the approval of the commissioner or in accordance with the provisions of §§ 27-6-17 - 27-6-22.
R.I. Gen. Laws § 27-6-29