When arrested for DUI in Illinois, the police officer will typically take your physical driver's license to hold as part of the bond in your case. That's not the important part - your physical driver's license issued by the State of Illinois is essentially a certificate that demonstrates you can legally drive. Your attorney can ask the Court to allow you to post a cash bond in lieu of your driver's license when appropriate.
The important part is the Notice of Statutory Summary Suspension you were given by the police officer. Whether you were arrested by the Chicago police, the Illinois State Police, the Cook County Sheriff or a local municial police department in Illinois.
A copy of that document is then sent down to the Secretary of State, who enters a suspension of your driving privileges to begin 46 days later. That suspension makes it illegal for you to drive, and you can face misdemeanor or felony charges for driving on a suspended license in Illinois.
There are ways to challenge the suspension, and in some cases, a driving permit is available. In this video, Illinois DUI attorney Steve Fagan from our law firm clarifies a question asked by many clients - how can I get back to driving and restore my driving privileges in Illinois after a DUI?