DUI & Impaired Driving
BAC limits, implied consent, penalties, and impairment factors.
DUI & Impaired Driving rules in Illinois follow the federal framework with state-specific limits, distances, and exceptions. The practice questions below are drawn from the Illinois driver handbook, so they track the state's own rules.
DUI & Impaired Driving questions, Illinois edition.
Each question links through to a full explanation, the rule it tests, and a citation back to the manual.
- What is the blood-alcohol concentration (BAC) at which it is illegal for an adult driver to operate a motor vehicle in Illinois? →
- What speeds up your body's elimination of alcohol? →
- Illinois law about drinking alcoholic beverages inside a moving vehicle says that: →
- You are arrested in Illinois for suspected DUI, with no prior DUI record and no serious injury or death in the crash. You refuse chemical testing. Under the implied consent law, how long will your driving privileges be suspended? →
- A driver takes the breath test and it discloses a BAC of .08 percent or more. How long is the statutory summary suspension for a first offender? →
- What is the minimum revocation period for a first DUI conviction in Illinois? →
- A driver age 20 is stopped and found to have a small amount of alcohol in their system, though under .08. Under Illinois law, this driver's license will be suspended for at least: →
- A 19-year-old driver is convicted of DUI for the first time in Illinois. What is the minimum revocation period? →
- In Illinois, at what level of cannabis THC per milliliter of whole blood does a driver become per-se impaired? →
- After a DUI conviction in Illinois, before your driving privileges can be restored, you must file Financial Responsibility Insurance (SR-22) for how long? →
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