Chicago Criminal Lawyer Blog
How Illinois Defines DUI and When It Becomes a Felony
Driving under the influence is one of the most aggressively prosecuted crimes in Chicago and across Illinois. Under 625 ILCS 5/11-501, a DUI is defined as operating or being in actual physical control of a vehicle while impaired by alcohol, drugs, intoxicating compounds, or with a BAC of .08 or higher. For many first-time offenders, DUI is charged as a misdemeanor. However, Illinois law creates a category called “Aggravated DUI,” which is a felony offense.
Aggravating factors turn a misdemeanor into a felony. These include having prior DUI convictions, driving on a suspended or revoked license, causing serious injury or death, transporting minors, or driving without insurance. Each factor raises the seriousness of the case and exposes the defendant to years in state prison rather than county jail.
