
Ignition Interlock Device (IID)
Breathalyzer installed in vehicles for repeat or severe DUI offenders.
Understanding Ignition Interlock Device (IID)
An Ignition Interlock Device (IID) is a mini-breathalyzer wired to a vehicle's ignition system. Before starting the car, the driver must blow into the device; if alcohol is detected, the engine will not start. Under California law (VC 23575.3), IID installation is mandatory for repeat DUI offenders and DUI cases involving injuries. First-time offenders may also choose to install an IID to obtain a restricted license immediately, avoiding the standard 30-day hard suspension.
Reputable Sources & California Code References
The information provided on this page is sourced directly from the official California Legislative Information database and relevant state statutes.
Disclaimer: Laws and regulations are subject to change. These references are provided for informational purposes only and do not constitute formal legal advice. Always consult with a qualified attorney regarding your specific case.
Need Legal Help?
If you are facing charges related to Ignition Interlock Device (IID), contact us immediately. Early intervention is critical to building a strong defense.
Schedule Your Free Consultation
August 2026
Your Details
Select a date and time to continue.