R.I. Gen. Laws § 39-4-1
Every public utility shall, whenever any accident attended with loss of human life, or serious injury occurs within this state, directly or indirectly arising from or connected with its maintenance or operation, give immediate notice thereof to the division. In the event of any accident, the division, if it deems that the public interest requires it, shall cause an investigation to be made forthwith, which investigation shall be held in the locality of the accident, unless for the greater convenience of those concerned, it shall order the investigation to be held at some other place; and the investigation may be adjourned from place to place as may be found necessary and convenient. The division shall reasonably notify the public utility of the time and place of the investigation. The notice required by this section to be given shall not be admitted as evidence or used for any purpose against the public utility giving notice, in any suit, action, or proceeding brought for damages growing out of any matter mentioned in the notice; nor shall the notice be admitted as evidence or be used for any purpose in any criminal proceeding brought against the public utility giving notice, or against any of its officers, agents, or employees, growing out of any matter mentioned in the notice.
R.I. Gen. Laws § 39-4-1