What Counts as a DUI in Illinois?

Driving Under the Influence (DUI) is most often associated with drinking alcohol before driving a car. According to the Illinois 2020 DUI Fact Book, even drivers with a Blood-Alcohol Content (BAC) below the legal limit

“Driving Under the Influence” is defined as operating a motor vehicle while impaired by alcohol, other drugs including cannabis (marijuana) prescribed for medical purposes, or intoxicating compounds and methamphetamine. In Illinois, a driver is legally