R.I. Gen. Laws § 31-36.1-7: Discharge of surety.

Any surety on a bond furnished by a motor carrier shall be discharged from any liability to the state accruing on the bond after expiration of sixty (60) days from the date which the surety shall have filed with the administrator a written request to be released and discharged, but not from liability already accrued before the expiration of the sixty (60) day period. The administrator, upon receipt of the request, shall promptly notify the motor carrier who furnished the bond in question. Unless the motor carrier, prior to the expiration of the sixty (60) day period, files a new bond satisfactory to the administrator, the administrator shall immediately revoke the motor carrier’s license and identification devices.