Ignition Interlock Devices (FFDL 31)
- What Is an Ignition Interlock Device (IID)?
- Can IIDs Prevent Drunk Driving?
- How Do I Know If I Need to Install an IID?
- How Do I Install an IID?
- IID Providers
- Installation and Monitoring Fees
- What Happens After I Install the IID?
- IID Calibration and Monitoring
- IID Noncompliance
IID installers are required to offer reduced fees for IIDs to participants whose income level falls within the federal poverty level guidelines. Documents used to verify your income could include:
- Your previous year’s federal income tax return.
- Your previous three months’ weekly or monthly income statements.
- Employment Development Department (EDD) verification of unemployment benefits.
If you are not eligible for reduced fees, you are responsible for the entire cost of the IID program.
After installing the IID, the IID installer will provide you with an original Verification of Installation Ignition Interlock (DL 920) form.
If you apply for an initial IID-restricted driver license (DL), you must bring your original DL 920 and all applicable fees in person to the nearest DMV office. If you meet all eligibility requirements, DMV will place you on an IID restriction with unlimited driving privileges as long as you drive a vehicle equipped with an IID.
Once installed in your vehicle, the IID must be calibrated and inspected by a certified installer at intervals not to exceed 60 days. Your installer ensures the device is working properly and that no violations, such as failing to take random retests, have been logged. Noncompliance with IID requirements are reported to the court or DMV (whichever applies) and you may have your driving privilege suspended or revoked.
Certain violations require DMV to immediately suspend or revoke your driving privilege if you have an optional IID restriction (for example, an attempt to remove, tamper with, bypass, or failure to comply with any requirement for IID maintenance or calibration). DMV may restore the IID-restricted driving privilege upon receipt of a new DL 920.
Your driving privilege could be suspended or revoked if you do not comply with your IID restriction. IID noncompliance includes the following:
- Failing 1 time to service the IID within 60 days.
- Failing 3 or more times with the requirement for maintenance or calibration within 60 days.
- Attempting to bypass the IID.
- Tampering with the IID.
- Attempting to remove the IID.
Your driving privilege can also be suspended or revoked if you remove the IID before your restriction period is over.
FFDL 31 (REV. 8/2019)