Ignition Interlock Device (IID) in Illinois
Illinois uses the term "DUI" for impaired driving offenses. IID requirement: required for all dui offenses. First offense scope: Duration of suspension (typically 6-12 months). Confirm your actual notice and license status.
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Quick Answer
Illinois requires a Breath Alcohol Ignition Interlock Device (BAIID) for all DUI offenders who wish to drive during their statutory summary suspension period. The BAIID is not strictly mandatory — you can choose to not drive during the suspension — but it is required if you want driving privileges. For repeat offenders, IID is mandatory for reinstatement.
IID Duration by Offense
| Offense | IID Duration |
|---|---|
| 1st Offense | Duration of suspension (typically 6-12 months) |
| 2nd Offense | 5 years minimum (as condition of reinstatement) |
| 3rd Offense | 5 years minimum |
| 4th+ Offense | 5 years minimum (often longer by court order) |
BAC threshold: Any DUI (required for driving privileges during suspension); mandatory for all repeat offenders
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
Illinois issues a Monitoring Device Driving Permit (MDDP) for first offenders with BAIID installed. This allows unrestricted driving during the suspension period. Repeat offenders receive a Restricted Driving Permit (RDP) with BAIID that limits driving to specific purposes.
Tampering / Circumvention Penalties
Tampering with a BAIID in Illinois is a Class 4 felony for repeat offenders (1-3 years in prison) and a Class A misdemeanor for first offenders (up to 1 year in jail). Having someone else blow into the device is also a criminal offense.
Early Removal
Illinois does not allow early removal for first offenders. The BAIID must remain for the full suspension period. Repeat offenders must complete the full 5-year minimum.
Illinois-Specific Notes
Illinois uses the term BAIID (Breath Alcohol Ignition Interlock Device) instead of just IID. The state's MDDP program is unusual: first offenders with BAIID get unrestricted driving privileges (not limited to work/school), making it similar to California's approach. Illinois also has the Secretary of State's office (not DMV) handling driver's license issues.
Frequently Asked Questions
Is an IID (BAIID) required for a first DUI in Illinois?
What is an MDDP in Illinois?
How long do I need a BAIID in Illinois?
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NHTSA: interlock device and program background. This national reference does not verify every state rule above. Confirm the applicable law and current instructions with the authority named on your order or licensing notice.