Will I go to jail for a DUI?
It depends on the circumstances. For a first offense DUI, jail time is possible (up to 364 days) but not mandatory in most cases. In DuPage County, most first-time offenders who retain experienced counsel and have no aggravating factors do not serve jail time. Court supervision with fines, classes, and community service is the typical outcome.
A second offense carries a mandatory minimum of 5 days in jail or 240 hours of community service. The judge cannot waive this requirement.
A third or subsequent DUI is a felony with mandatory state prison time. A third DUI carries 3 to 7 years. A sixth or subsequent DUI carries 6 to 30 years.
Aggravating factors that increase the likelihood of jail time include a BAC of 0.16 or higher, a child passenger under 16, causing an accident with injuries, or driving on a suspended license.
Full details: Illinois DUI Penalties: Complete Sentencing Guide
Can I still drive after a DUI arrest?
Yes, but with restrictions and time limits.
After your arrest, you receive a notice of Statutory Summary Suspension. Your current license remains valid for 46 days after the date of arrest. On day 46, the suspension begins.
Once the suspension begins, first-time offenders are generally eligible for a Monitoring Device Driving Permit (MDDP). This allows you to drive with a BAIID (Breath Alcohol Ignition Interlock Device) installed in your vehicle. You blow into the device before the car will start. If alcohol is detected, it will not start.
The MDDP requires advance application and BAIID installation. Do not wait until day 46 to start this process.
If you are not eligible for an MDDP (repeat offenders or those with a prior revocation), you may need to apply for a Restricted Driving Permit (RDP) through a formal Secretary of State hearing.
Full details: DUI and Your Driver's License: Suspensions, Revocations, and Permits
Should I refuse the breathalyzer?
This is one of the most common questions we get, and there is no one-size-fits-all answer. Here are the tradeoffs:
| Factor | If You Submit (and Fail) | If You Refuse |
|---|---|---|
| Suspension length (first offense) | 6 months | 12 months |
| BAC evidence at trial | Prosecution has your BAC number | No BAC number for the jury to see |
| MDDP eligibility | Eligible during suspension | Eligible during suspension |
| Prosecution's case strength | Stronger (objective BAC evidence) | Weaker (must rely on officer observations) |
| Refusal used against you? | N/A | Prosecutor may argue consciousness of guilt (rebuttable) |
Refusing always results in a longer suspension. But it also eliminates the single strongest piece of evidence the prosecution can use against you at trial. Whether that tradeoff benefits you depends on the specific circumstances of your arrest.
If you have prior DUI history, the calculus changes dramatically: a refusal means a 36-month suspension instead of 12 months.
There are two different breath tests. The roadside preliminary breath test (PBT) is not admissible in court and you can refuse it without triggering implied consent penalties. The evidentiary breath test at the station is the one covered by implied consent law. Refusing the station test triggers the automatic 12-month suspension.
Full details: Illinois Implied Consent and Breath Test Refusal
What is court supervision, and can I get it?
Court supervision is a special disposition available only for first-time DUI offenders in Illinois. If the judge grants supervision and you complete all requirements, the DUI does not become a conviction on your criminal record.
This is the single most important distinction in Illinois DUI law. A conviction is permanent and can never be expunged. Supervision keeps it off your record.
Requirements typically include:
- Paying fines and court costs
- Completing a DUI evaluation and any recommended treatment
- Performing community service (mandatory if BAC was 0.16 or higher)
- Avoiding any new criminal charges during the supervision period (usually 12 to 24 months)
- Attendance at a Victim Impact Panel (in some courts)
Court supervision for DUI is available exactly once in your lifetime. If you use it on a first offense and are later charged again, you cannot get supervision again. The second charge results in a mandatory conviction. This is why fighting for dismissal on the first charge is so important: it preserves supervision as a future safety net.
Supervision is not guaranteed. The judge decides whether to grant it, and the prosecutor may argue against it. Having an experienced attorney advocate for supervision can make a significant difference, especially when aggravating factors are present.
Can a DUI be dismissed?
Yes. DUI cases are dismissed in DuPage County regularly. Common grounds for dismissal include:
- The traffic stop was illegal. If the officer lacked reasonable suspicion, all evidence gathered after the stop is inadmissible. No evidence, no case.
- The breath test was improperly administered. Failure to observe the 20-minute waiting period, improper machine operation, or uncertified operators can invalidate the BAC result.
- The breath test machine was not properly calibrated. We subpoena calibration and maintenance records for every case. Defects are more common than most people realize.
- Chain-of-custody issues with blood test results. Gaps in documentation, improper storage, or contamination can render blood test results inadmissible.
- Constitutional rights were violated. Miranda violations, denial of right to counsel, or unlawful searches can lead to suppression of evidence and dismissal.
- Insufficient probable cause for the arrest. If the officer's observations alone did not support a reasonable belief of impairment, the arrest may be challenged.
Many cases that look hopeless at first turn out to have strong defenses once an experienced attorney examines the evidence in detail.
Full details: DUI Defense Strategies in Illinois
What is a BAIID?
A Breath Alcohol Ignition Interlock Device (BAIID) is a breathalyzer connected to your car's ignition. You must blow into it before the car will start. If alcohol is detected above a pre-set threshold, the vehicle will not start.
Key facts about the BAIID:
- Required if you want to drive during a Statutory Summary Suspension (through an MDDP)
- Required for many Restricted Driving Permits (RDPs) during revocation
- You must provide rolling retests while driving (the device prompts you at random intervals)
- All results are recorded and reported to the Secretary of State
- Violations (failed tests, missed tests, tampering) can extend your suspension or revocation
- Installation costs $100 to $200, plus monthly monitoring fees of $80 to $125
- Must be installed by a Secretary of State-approved provider
The BAIID is inconvenient and expensive, but it allows you to keep driving legally during a period when you would otherwise have no driving privileges at all.
Full details: DUI and Your Driver's License
How long does a DUI stay on my record?
A DUI conviction in Illinois stays on your criminal record permanently. It cannot be expunged or sealed. This applies to both misdemeanor and felony DUI convictions. There is no waiting period. There is no petition process. It is permanent.
If you received court supervision (not a conviction), the arrest record can be expunged after a waiting period of 2 to 5 years. However, the DUI still appears on your Illinois driving record even after criminal expungement.
Illinois has no lookback period for DUI. A prior DUI from 20 years ago still counts as a prior offense if you are arrested again. Every DUI in your history affects sentencing on a new charge, no matter how old it is.
Full details: DUI Expungement in Illinois
How much does a DUI lawyer cost?
DUI attorney fees in Illinois typically range from $2,500 to $10,000 or more, depending on the complexity of the case and whether it goes to trial.
Most DUI attorneys charge a flat fee that covers the entire case through resolution. This usually includes:
- All court appearances
- The Petition to Rescind suspension hearing
- Discovery review and evidence analysis
- Pretrial motions (including motions to suppress)
- Plea negotiation
Trial is sometimes an additional fee. Ask about this upfront.
The cost of a DUI attorney should be weighed against the cost of not hiring one: a permanent criminal record, 3 to 5 years of increased insurance premiums ($5,000–$15,000+), potential loss of employment or professional license, and the loss of your one-time court supervision option.
Full cost analysis: How Much Does a DUI Cost in Illinois?
What happens if I am charged with DUI as an underage driver?
Illinois has a zero-tolerance policy for drivers under 21. Any amount of alcohol (BAC of 0.01 or higher) can result in a license suspension under 625 ILCS 5/11-501.8.
If the underage driver's BAC is 0.08 or higher, they face the same criminal DUI charges and penalties as an adult. The zero-tolerance suspension is in addition to any criminal penalties.
For underage drivers, the long-term consequences are particularly severe because the DUI can affect college applications, scholarships, financial aid, graduate school admissions, and the start of a career.
Full details: Underage DUI (Zero Tolerance)
Can I get a DUI for marijuana or prescription drugs?
Yes. Illinois law treats impaired driving from any substance the same as alcohol-related DUI. You can be charged with DUI for driving under the influence of cannabis, prescription medication, or any controlled substance under 625 ILCS 5/11-501(a)(4) through (a)(7).
Cannabis-Specific Rules
Even though recreational cannabis is legal in Illinois, driving under the influence of cannabis is illegal. Illinois has per se THC limits:
- 5 nanograms per milliliter of blood
- 10 nanograms per milliliter of other bodily substance (saliva, urine)
If your THC level exceeds these thresholds, you can be charged with DUI regardless of whether you were actually impaired.
Prescription Medication
You can be charged with DUI for driving under the influence of legally prescribed medication if it impairs your ability to drive safely. This includes pain medications (opioids), anti-anxiety medications (benzodiazepines), sleep aids, muscle relaxants, and certain antihistamines.
The fact that the medication was prescribed to you is not a defense. The question is whether it impaired your driving.
Zero-Tolerance Substances
Under 625 ILCS 5/11-501(a)(5), it is illegal to drive with any amount of certain controlled substances in your system (cocaine, heroin, methamphetamine, and others), regardless of impairment. This is a strict liability standard. If the substance is detected in your blood or urine, you can be charged.
Full details: DUI Drugs / Prescription Medication and DUI Cannabis / THC
What is the DUI legal process in Illinois?
A DUI arrest triggers two separate legal processes that run simultaneously:
- The criminal case: Filed in circuit court, handled by the State's Attorney. This is the charge itself. It can result in dismissal, court supervision, conviction, or acquittal at trial.
- The Statutory Summary Suspension: An automatic administrative action against your driving privileges. It starts 46 days after arrest and must be challenged within 90 days.
The criminal case typically moves through these stages: arrest, booking, arraignment (first court date), discovery and pretrial motions, plea negotiation, and either resolution or trial. Most cases resolve in 3 to 12 months.
The most common mistake people make is waiting for their first court date to take action. The 90-day suspension petition deadline and the need to preserve video evidence mean you should hire an attorney within days of your arrest.
Full step-by-step walkthrough: The Illinois DUI Legal Process: Step by Step
Do I really need a lawyer for a DUI?
You are not required to hire a lawyer. But here is what you are risking if you do not:
- A permanent criminal record that cannot be expunged. Ever.
- Missing the 90-day deadline to challenge your license suspension
- Losing your one-time court supervision option on a case that might have been dismissed
- Failing to identify evidence problems (bad breath test, illegal stop, procedural errors) that could have led to suppression and dismissal
- 3 to 5 years of increased insurance premiums ($5,000–$15,000+) that might have been avoided
- Potential loss of professional license, employment, or immigration status
A DUI conviction in Illinois is permanent and inexpungeable. That single fact justifies professional representation. The cost of defense is almost always less than the cost of the consequences you avoid.
Full details: Who Can Help Me with My DUI Case?
answer it directly.