Chicago DUI Frequently Asked Questions
The questions below come up in almost every Chicago DUI consultation. The answers are general and apply to Illinois DUI law. For specific advice on a specific case, call (888) 828-2305 for a free 24/7 consultation with a Chicago DUI lawyer.
About the Charge
What is the legal BAC limit in Illinois?
The general legal limit is .08 for drivers 21 and older, .04 for commercial drivers, and any detectable amount for drivers under 21 under Zero Tolerance.
What is aggravated DUI in Illinois?
Aggravated DUI is a felony DUI under 625 ILCS 5/11-501(d). The most common triggers are BAC .16 or higher, third or subsequent DUI, DUI with great bodily harm, DUI causing death, DUI with a child passenger, and DUI while on a suspended license.
Can I be charged with DUI if my BAC was under .08?
Yes. A driver with BAC between .05 and .07 can be charged if other evidence of impairment exists. Officer observations, field sobriety performance, and statements can support a DUI charge even without a BAC over .08. Drug DUI charges do not require any specific BAC, only evidence of impairment.
What if I was just parked or sleeping?
Illinois courts apply an "actual physical control" standard. Sitting in the driver's seat with the keys in the ignition (even without driving) can support a DUI charge. Specific facts matter: where the keys were, whether the engine was running, where the car was parked, and the position of the driver.
About the Stop and Arrest
Can the police stop me just because they suspect I have been drinking?
No. The officer needs reasonable, articulable suspicion of a specific traffic violation, equipment violation, or other criminal activity. A general feeling that you might have been drinking is not enough. Roadside sobriety checkpoints have their own constitutional requirements.
Do I have to do field sobriety tests?
No. Field sobriety tests are voluntary in Illinois. Refusing them does not trigger automatic license suspension. The officer can still arrest based on other observations, but you have not added any evidence by declining.
Do I have to take the breathalyzer?
The Portable Breath Test on the side of the road is voluntary. The evidentiary breath test at the station is governed by implied consent: refusing triggers automatic Statutory Summary Suspension (1 year first refusal, 3 years subsequent).
Should I take the breathalyzer test?
That decision is personal and depends on the specific situation. A blow under .08 removes the BAC component from the prosecution's case. A blow over .08 produces evidence against you but a shorter license suspension. A refusal produces no breath BAC evidence but a longer suspension. Each path has consequences. Discuss with a Chicago DUI lawyer if possible.
Was I supposed to be read Miranda rights?
Miranda warnings are required only for custodial interrogation. Pre-arrest questioning during a traffic stop generally does not require Miranda. Post-arrest questioning at the station does. If you were questioned at the station without Miranda warnings, the statements may be suppressible.
About the License
How long do I have to request a hearing on my license suspension?
90 days from the date of arrest. Miss the deadline and the suspension takes effect on day 46 without challenge.
What is the Statutory Summary Suspension?
It is the automatic administrative license action triggered by either failing or refusing a chemical test. First-offender suspensions are 6 months (failed test) or 1 year (refused test). Repeat offenders face 1 year (failed) or 3 years (refused).
Will my license be suspended even if I am not convicted?
The Statutory Summary Suspension is administrative and can remain in effect even if the criminal case is dismissed or reduced. Successful challenge at the suspension hearing within 90 days is the way to keep the license.
Can I drive while my license is suspended?
First-time offenders are typically eligible for a Monitoring Device Driving Permit (MDDP) after a 30-day waiting period. The MDDP requires installation of a Breath Alcohol Ignition Interlock Device (BAIID). Other drivers may petition for a Restricted Driving Permit (RDP) for limited driving purposes.
What is a BAIID?
A Breath Alcohol Ignition Interlock Device is an in-car breath testing unit that the driver must blow into before the vehicle will start. It is required for MDDP and most RDP and reinstatement after DUI revocation.
About the Court Case
When is my first court date?
Arraignment is typically scheduled within 10 to 30 days of arrest. The exact date is on the citation or release paperwork.
Do I have to show up to court?
Yes. Failing to appear results in a warrant for your arrest and can convert what was a manageable case into a much more difficult one. If you cannot appear for a specific date, an attorney can sometimes file to continue the date but only if done in advance.
Will I go to jail for a first DUI?
First-offense DUI is a Class A misdemeanor with up to 364 days jail exposure, but jail is not mandatory for most first-offense cases. Court supervision, fines, evaluation, and community service are more common dispositions for first offenders.
What is court supervision?
Court supervision is a sentencing alternative available for first-offense DUI defendants. Successful completion (typically 12 to 24 months) results in no conviction being entered. See our court supervision page.
Can I expunge a DUI from my record?
No. Illinois law does not allow DUI convictions to be expunged or sealed. A successful court supervision disposition is not a conviction and is treated differently, but the arrest record itself remains.
About Defense Strategy
What defenses are available?
Defense strategy depends on the specific evidence. Common challenges include the legality of the traffic stop, the administration of field sobriety tests, breathalyzer calibration and operator certification, blood draw chain of custody, probable cause for arrest, and Miranda compliance. See our DUI defense arguments page for the full list.
How long does a DUI case take?
First-offense Cook County DUI cases typically resolve within 4 to 9 months from arrest, depending on motion practice, plea negotiation, and the specific courthouse. Felony aggravated DUI cases can take 1 to 2 years.
Do I really need a lawyer?
For a DUI, yes. The procedural rules, deadlines, motion opportunities, and negotiation patterns are not realistically navigable without representation. The cost of an attorney is small compared to the cost of a conviction (insurance increases alone over 3 years typically exceed legal fees).
About Out-of-State Defendants
I live out of state. Do I have to come back to Chicago for court?
The arraignment typically requires personal appearance. Some subsequent appearances may be waived through counsel depending on the judge. A Chicago DUI lawyer can advise on which appearances require travel.
Will my home state suspend my license?
Most likely yes. The Driver License Compact reports Illinois DUI convictions and certain suspensions to the home state, which typically applies its own law to impose reciprocal consequences.
Free 24/7 Consultation
Specific questions about a specific case need a specific conversation. Call (888) 828-2305 for a free consultation with a Chicago DUI lawyer. Available 24 hours a day, seven days a week.