Ignition Interlock Device (IID) in California
California uses the term "DUI" for impaired driving offenses. IID requirement: depends on case and license route. First offense scope: Non-injury: court-ordered or optional license-route conditions may apply. First injury cases fall under a separate mandatory rule.. Confirm your actual notice and license status.
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Quick Answer
California’s statewide IID program does not make every first non-injury conviction a mandatory-installation case. It distinguishes repeat/injury cases, court orders and optional restricted-license routes. Confirm the offense date, applicable notice, court order and license status with DMV.
IID Duration by Offense
| Offense | IID Duration |
|---|---|
| 1st Offense | Non-injury: court-ordered or optional license-route conditions may apply. First injury cases fall under a separate mandatory rule. |
| 2nd Offense | Check prior-counting rules, injury involvement, applicable offense and the DMV notice. |
| 3rd Offense | Check the actual mandatory term and whether previous qualifying convictions or injury rules change it. |
| 4th+ Offense | Read the applicable repeat/felony/injury provision and licensing notice; this is not a single national duration. |
BAC threshold: The applicable program and order determine the requirement; do not use a BAC number alone.
Confirm the device, provider and written quote
Check the responsible authority’s current approval information for the particular device and installer. Request the billing unit, included services, actual paid visit schedule, taxes, fees and removal terms in writing. Confirm financial assistance separately.
Add your own quoted charges in the IID worksheet. Unknown charges stay unknown; no local price or appointment count is assumed.
Restricted License with IID
Installing the device does not itself restore driving privileges. DMV lists further conditions including program documentation, proof of insurance and fees, and requires other outstanding suspensions or revocations to be cleared. An eligible IID-restricted driver may use the documented employer-vehicle procedure; do not assume it covers every vehicle or driver.
Tampering / Circumvention Penalties
Do not bypass the device or ask someone else to supply a test. California Vehicle Code §23247 addresses specified circumvention and related conduct. The exact charge and consequences depend on the conduct and applicable provision.
Early Removal
A quote or calendar calculation is not removal authorization. Confirm completion, reporting and removal requirements with DMV, the court when applicable, and the authorized installer.
California-Specific Notes
The official DMV program page distinguishes mandatory installation, optional restrictions, exemptions and employer-vehicle procedures. Use its current instructions and the actual notice; a general summary does not establish that you may drive.
Frequently Asked Questions
Is an IID automatically mandatory for every first California DUI?
Does an IID installation give me a valid unrestricted California license?
How do I compare an IID quote in California?
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