R.I. Gen. Laws § 39-14-18: Proof of financial responsibility.

The owner of every taxicab or limited public motor vehicle shall, before operating or continuing to operate a taxicab or limited public motor vehicle on the public highways of this state, furnish to the division of public utilities and carriers, a certificate of insurance issued by an insurance company authorized to transact business in this state, showing that the owner has a policy insuring him or her against liability for injury to persons and damage to property that may be caused by the operation of the taxicab or limited public motor vehicle, such policy to provide for indemnity in the sum of not less than three hundred thousand dollars ($300,000) combined, single limit, or two hundred fifty thousand dollars ($250,000) per person, five hundred thousand dollars ($500,000) per accident bodily injury and one hundred thousand dollars ($100,000) property damage split limit.