State statute
Kern — KRN SUP CRT TR-0501
California foreclosure, tax-defaulted, court-ordered and probate-sale law and official procedures — verbatim and citable.
- Edition
- 2026-09-26
- Last updated
- 2026-09-27
- Jurisdiction
- Kern County
Kern — KRN SUP CRT TR-0501¶
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IGNITION INTERLOCK DEVICES DMV FAST FACTS #31
YOU MUST SUBMIT YOUR WRITTEN PROOF OF COMPLIANCE WITH THE IID ORDER TO THE COURT BY THE DEADLINE WRITTEN ON YOUR PROBATION TERMS What Is an Ignition Interlock Device (IID)?
An IID is about the size of a cell phone and wired to your vehicle’s ignition. After installation, the IID requires you to provide a breath sample before the engine will start. If the IID detects alcohol on your breath, the engine will not start. As you drive, you are periodically required to provide breath samples to ensure the continued absence of alcohol in your system.
Can IIDs Prevent Drunk Driving?
Yes. The International Council on Alcohol, Drugs and Traffic Safety maintains that IIDs, when combined with a comprehensive monitoring and service program, lead to a 40–95 percent reduction in the rate of repeat drunk driving offenses among offenders as long as the IID remains on the vehicle.
How Do I Know If I Need to Install an IID?
A court may order you to install an IID and provide you with information about their IID requirements. Additionally, certain laws require driving under the influence (DUI) offenders to install an IID. The Department of Motor Vehicles (DMV) will send you a suspension or revocation letter that will provide you with information about regaining your driving privilege. These letters may include information about mandatory IID installation, depending on which DUI law applies to you.
How Do I Install an IID?
Contact information for authorized IID manufacturers can be found at: https://www.dmv.ca.gov/portal/vehicle- industry-services/occupational-licensing/occupational-licenses/breath-alcohol-ignition-interlock-device-baiid- manufacturer/ignition-interlock-device-iid-list/.
Authorized IID manufacturers can provide a list of facilities and more information about installing an IID in your vehicle. Prior to installation, ensure the installer has a valid license issued by the Bureau of Automotive Repair (BAR) or Bureau of Household Goods and Services (BHGS), which are part of the Department of Consumer Affairs (DCA).
Installation and Monitoring Fees
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.
What Happens After I Install the IID?
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.
KRN SUP CRT TR-0501 (Mandatory Form) (Adopted 05/2022) Page 1
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IID Calibration and Monitoring
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.
IID Noncompliance
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.
What Happens If I Don’t Own a Car?
The law allows you to request an exemption from IID installation. The Exemption for IID (DL 4062) form can be obtained from the DMV. The form must be submitted to a DMV field office or mailed to the Driver Licensing Mandatory Actions Unit (DLMAU) within 30 days of the DMV’s suspension or revocation notice mail date.
What are the Requirements for an IID Exemption Approval?
To approve an exemption request, the DMV must receive a signed exemption request form that certifies under penalty of perjury that you:
do not own or have access to a vehicle at your residence, and no longer have access to the vehicle used when the DUI offense occurred.
The request must also indicate you acknowledge that you are:
only allowed to drive a vehicle that has a certified IID installed, required to have a valid driver license before driving, and immediately subject to the IID installation requirements when you purchase or gain access to a vehicle.
The DMV will only approve signed exemption requests that are submitted within 30 days of the suspension or revocation notice mail date. Upon receipt, the DMV will verify if you qualify for the exemption and notify you in writing of your eligibility. IMPORTANT: If the exemption is granted, an IID restriction will still be imposed on your driving record.
Contact the DMV directly with any and all questions about the IID process.
KRN SUP CRT TR-0501 (Mandatory Form) (Adopted 05/2022) Page 2