R.I. Gen. Laws § 31-41.3-6: Maintenance of system.

The state department of transportation, and/or the municipalities, may enter into an agreement with a private corporation or other entity to provide automated school-zone-speed-enforcement systems equipment services and to maintain the systems. A contract between a government agency and a manufacturer or supplier of automated traffic-speed-enforcement systems shall be based on the value of such equipment and related support services and shall not be based on a percentage of the revenue generated by the automated school-zone-speed-enforcement system.