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Ignition Interlock Device (IID) Pilot Program (FFDL 44)

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On July 1, 2010, an IID pilot program was implemented which requires all persons convicted of a misdemeanor for driving under the influence (DUI) of alcohol/drugs in violation of California Vehicle Code (CVC) §23152, a felony DUI with injury in violation of CVC §23153, or vehicular manslaughter while intoxicated in violation of California Penal Code §191.5(b) in any one of the four pilot counties (Alameda, Los Angeles, Sacramento, andTulare) to install a certified IID in each vehicle that he/she owns or operates.

What is an IID?

An IID is a device wired to a vehicle's ignition that requires a breath sample from the driver before the engine will start. If the device detects alcohol on the breath, the engine will not start. As the individual drives, the device will request periodic breath samples to ensure continued absence of alcohol in the driver's system.

  • A Department of Motor Vehicles Ordered Verification of Ignition Interlock, DL 924, form.
  • An alcohol treatment program Proof of Enrollment Certificate, DL 107, or Notice of Completion Certificate, DL 101 form.
  • A California Insurance Proof Certificate, SR 22.
  • Pay all applicable reinstatement fees and a $45 administrative service fee.

Once you comply with all reinstatement requirements, DMV will restrict you to drive only vehicles equipped with a certified IID (in addition to any other applicable restrictions) until your IID restriction ends.

IID Restriction Terms

During your IID restriction period, you cannot drive vehicles that are not equipped with a functioning IID. The term of the IID restriction period is based on the initial DUI offense and the number of DUI related offenses you have within the prior 10 years, as specified below:

Number of Offenses within 10 years

IID Restriction Period for Conviction of California Vehicle Code (CVC) §23152

IID Restriction Period for Conviction of CVC §23153 or California Penal Code §191.5(b)


 5 months

 12 months


 12 months

 24 months


 24 months

 36 months

 4 or more

 36 months

 48 months

How Do I Get an IID Installed?

Contact a California certified IID installer. To obtain a list of certified IID Installers you may:

IID installers in all counties are required to offer eligible pilot program participants reduced fees for IID installations and calibrations. The cost will be determined by your family's income in comparison to current federal poverty guidelines.

What Happens After an IID is Installed?

Once installed in your vehicle, the IID must be calibrated and inspected by a certified installer at least every 60 days. The inspections ensure that the device is working properly with no evidence of tampering. If the installer notifies DMV that you failed to comply with any of the IID requirements, DMV will "pause" the IID restriction. You will be ineligible to operate a vehicle until DMV receives a new DL 924 or a letter from the IID installer indicating that the IID remains installed and is functioning correctly, or that you are back in compliance with the IID maintenance and calibration requirements. The full restriction term must be served before the IID restriction will be removed from your driving record. If you violate your restriction and drive a vehicle without a functioning IID during your IID restriction term, you will be cited by law enforcement and have your vehicle impounded.

What if I Don't Own a Vehicle?

To qualify for an exemption, you must submit a signed Exemption for Ignition Interlock Device, DL 4055B, form that certifies under penalty of perjury that you:

  • Do not own a vehicle.
    NOTE: If you own a vehicle that is on a nonoperational status, you do not qualify for an exemption. DMV will access your registration record(s) to verify the certification.
  • No longer have access to a vehicle at your place of residence.
  • No longer have access to the vehicle used when your DUI offense occurred.

DMV will only approve signed exemption requests that are submitted within 30 days of the suspension or revocation notice mail date.
Additional information regarding the IID pilot program, IID installation, and related costs are available at

Funding for this program was provided by a grant from the California Office of Traffic Safety, through the National Highway Traffic Safety Administration.

FFDL 44 (REV. 11/2011)


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