Ignition Interlock Devices: Requirements and Compliance in Arizona

An Ignition Interlock Device (IID) is a breath-testing unit that is installed in a vehicle to prevent it from starting if alcohol is detected on the driver’s breath. In Arizona, IIDs are a mandatory condition for most DUI-related license reinstatements—even for first-time offenders.

Under A.R.S. § 28-3319, drivers convicted of DUI are required to install an IID on any vehicle they operate, and they must maintain it for a specific period depending on the type of DUI offense.

Mandatory IID Periods in Arizona:

– First-time DUI (standard): 12 months
– Extreme DUI (BAC 0.15% or higher): 12 to 18 months
– Super Extreme DUI (BAC 0.20% or higher): 18 to 24 months
– Aggravated DUI: 24 months or longer, depending on the offense and court order

The Arizona Department of Transportation (ADOT) oversees the ignition interlock program, and non-compliance can result in license re-suspension or extended IID requirements.

What Does an IID Do?

The IID requires the driver to provide a breath sample before starting the car. If the device detects alcohol above a preset limit (usually 0.02%), the vehicle will not start. Random rolling retests are also required while the vehicle is in motion to ensure continued sobriety.

Installation and Maintenance:

– IIDs must be installed by an ADOT-approved provider
– The driver is responsible for all installation and monthly calibration fees
– Monthly maintenance checks are required to ensure proper operation
– Tampering with or attempting to bypass the IID is a criminal offense and can lead to additional charges and penalties

Common IID Violations:

– Failing a breath test (even residual mouth alcohol can trigger a fail)
– Missing required retests
– Skipping maintenance appointments
– Attempting to drive without providing a valid sample

Any violations may be reported to the MVD, which could extend your IID requirement or re-suspend your driving privileges.

How an Attorney Can Help:

An experienced DUI attorney can help you:
– Understand your IID requirements
– Navigate license reinstatement steps
– Address false positive results or violations
– Ensure compliance with ADOT and court mandates

At Molina Law Group, we assist clients in every step of the DUI recovery process, from the initial arrest to IID compliance and full license reinstatement. We know how stressful and confusing the process can be—and we’re here to help you move forward with confidence.

Call us today at 602-718-1249 for a free consultation and personalized legal guidance.