Ignition Interlock Installation Verification

Judicial Council of California · Criminal

Verified current as of July 31, 2026

This form confirms that a person has successfully installed an ignition interlock device in their vehicle, which is a breathalyzer machine that prevents a car from starting if alcohol is detected. Courts and probation officers use this form to verify that someone convicted of a DUI has complied with the legal requirement to install this device as part of their sentence or probation conditions.