R.I. Gen. Laws § 31-21-12: Acquisition, maintenance, and operation of tow trucks by department of transportation.

The department of transportation is authorized to acquire, equip, maintain and operate not more than four (4) tow trucks, and to assign state employees to the trucks for the removal of disabled motor vehicles from state highways, state bridges, state causeways, or state tunnels in accordance with § 31-21-11.