US lawMassachusettsRegulations540 CMR — Massachusetts Registry of Motor Vehicles540 CMR 25.00 — Certification, installation, use and maintenance of ignition interlock devices25.01540 CMR 25.01PurposeYear: 2026Length: 23 wordsOfficial source The purpose of 540 CMR 25.00 is to establish guidelines and procedures for the certification, installation, use and maintenance of Ignition Interlock Devices.Next540 CMR 25.02