The commission shall adopt reasonable rules and regulations governing the procedure to be followed in any matter that may come before it for a hearing, and in the hearing the commission shall not be bound by technical rules of evidence. The commission shall sit as an impartial, independent body, and is charged with the duty of rendering independent decisions affecting the public interest and private rights based upon the law and upon the evidence presented before it by the division and by the parties in interest. The presence of one commissioner shall constitute a quorum at all hearings, provided that the concurrence of a majority of the commission shall be required for the rendering of a decision.
R.I. Gen. Laws § 39-1-11