Illinois: DUI Laws & Penalties Questions
10 real, verified Illinois driving-test questions on dui laws & penalties, each with the correct answer and a full explanation below. Want to practice these interactively instead? Start a DUI Laws & Penalties practice round.
1. How does Illinois legally classify a DUI offense?
Why: Illinois classifies driving under the influence as a violent crime, and a DUI conviction permanently remains on the offender's driving record.
2. For a first offense in Illinois, how long is the Statutory Summary Suspension if a driver refuses chemical testing, compared to failing it?
Why: A first-offense refusal of chemical testing carries a 1-year Statutory Summary Suspension in Illinois, while failing the test (BAC .08% or higher) carries a shorter 6-month suspension.
3. In Illinois, a driver with a prior DUI-related offense in the last 5 years who then refuses a second chemical test faces what Statutory Summary Suspension?
Why: A second offender -- someone with a prior Illinois summary suspension, out-of-state refusal, DUI supervision, or DUI conviction within the last 5 years -- faces a 3-year suspension for refusing a second chemical test.
4. After a DUI arrest in Illinois, how long is the temporary driving permit valid before a Statutory Summary Suspension actually begins?
Why: Illinois issues a 45-day temporary driving permit at the time of a DUI arrest; the Statutory Summary Suspension itself doesn't begin until the 46th day.
5. In Illinois, what is the minimum license revocation for a fourth DUI conviction?
Why: Illinois's DUI revocation ladder escalates sharply: a first conviction is a minimum 1-year revocation, a second within 20 years is 5 years, a third is 10 years, and a fourth or subsequent conviction is a lifetime revocation.
6. In Illinois, what happens if a first-time DUI offender who chose not to get a Monitoring Device Driving Permit is then caught driving during their suspension?
Why: A first-time DUI offender may opt out of the BAIID-equipped Monitoring Device Driving Permit and simply not drive during the suspension -- but if they're caught driving anyway, it's a felony.
7. In Illinois, what is the minimum license revocation for a first DUI conviction for a driver under 21?
Why: Illinois holds drivers under 21 to a stricter standard: a first DUI conviction carries a minimum 2-year revocation, double the 1-year minimum that applies to adult drivers.
8. In Illinois, what happens to a driver under 21 who is found with any trace of alcohol in their system while operating a vehicle?
Why: Illinois imposes a minimum 3-month license suspension on any driver under 21 found with any trace of alcohol in their system while driving, regardless of whether they meet the adult DUI threshold.
9. In Illinois, refusing a chemical test after being involved in a crash causing death or serious injury results in what?
Why: Refusing chemical testing after a crash involving serious personal injury or death carries a minimum 1-year license revocation in Illinois -- separate from the standard refusal suspension.
10. What THC concentration makes it illegal to drive in Illinois?
Why: Illinois sets an illegal driving threshold of 5 nanograms or more of THC per milliliter of whole blood (or 10 ng/mL of another bodily substance).
More Illinois Topics
- Defensive Driving (4)
- Emergency Vehicles, School Buses & Work Zones (5)
- Minor & Provisional Licensing (12)
- Parking Rules & Technique (4)
- Speed, Right-of-Way & Legal Rules (9)
Rules and requirements change — always confirm current details with Illinois SOSbefore your exam. Take the full Illinois practice test or check the Illinois cheat sheet.