DUI in Illinois
State-specific overview · Criminal Law
Illinois requires mandatory minimum jail time and license suspension for all DUI convictions, with escalating penalties for repeat offenses.
How Illinois treats DUI
Illinois mandates a minimum of 2 days in jail for a first DUI offense and a 1-year license suspension. The state uses a tiered penalty system where second and subsequent offenses carry progressively harsher jail sentences and longer suspensions. Illinois also requires DUI offenders to complete a Substance Abuse Treatment and Education Program (SATEP) as a condition of license reinstatement.
The general definition of DUI
Driving under the influence of alcohol or drugs, a serious criminal offense.
DUI stands for Driving Under the Influence and means operating a vehicle while impaired by alcohol, drugs, or both. You can be charged with DUI even if your blood alcohol level is below the legal limit if your driving is noticeably impaired. Penalties vary by jurisdiction and whether it's a first or repeat offense, but typically include fines, license suspension, jail time, and mandatory alcohol education programs. A DUI conviction has lasting effects on insurance rates, employment, and your driving record.
Read the full DUI entry →This page is a plain-English reference and is not legal advice. State laws change frequently. For specific situations consult a licensed attorney in Illinois.