Illinois DMV Exam Simulator
The real format: 35 questions · pass at 80% · Updated July 12, 2026
This is the dress rehearsal: exactly 35 questions, the real 80% passing bar (miss more than 7 and you fail) — the same rules Illinois applies on test day. That 80% bar ties Illinois with 35 other states at #7 strictest of the 50 states.
Answer each question to see the explanation. Your score is tallied against the real passing bar at the end.
1. Under Illinois’s implied-consent law, by driving on public roads you have already agreed to:
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Correct answer: Submit to chemical testing of breath, blood, or urine if lawfully arrested for DUI
Anyone who drives in Illinois is deemed to have consented to chemical testing to determine alcohol or drug content if they are arrested for DUI.
2. How long must a teen hold the instruction permit before moving to the next GDL phase?
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Correct answer: At least 9 months
A teen must hold a valid instruction permit for a minimum of 9 months (and remain conviction-free) before qualifying for the initial graduated license.
3. You may not park within 20 feet of:
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Correct answer: The driveway entrance to a fire station
Parking is prohibited within 20 feet of a fire-station driveway (and, when signs are posted, within 75 feet on the opposite side of the street) so emergency vehicles can respond.
4. Leaving the scene of a crash that injured or killed someone (hit-and-run) is:
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Correct answer: A serious crime
Failing to stop and remain at the scene of a crash involving injury or death is a serious criminal offense, punishable by license revocation and possible imprisonment.
5. Under Scott’s Law, what must you do when approaching a stationary emergency vehicle with its lights flashing?
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Correct answer: Change lanes away from it if you safely can, and reduce your speed
Scott’s Law requires you to change into a lane not adjacent to the stopped emergency vehicle if it is safe to do so, and to reduce speed and proceed with caution. If you cannot change lanes safely, slow to a reasonable and proper speed.
6. In Illinois, whenever you must run your windshield wipers because of rain or snow, you must also:
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Correct answer: Turn on your headlights
Illinois has a "wipers on, lights on" rule: any time conditions require your wipers, your headlights must be on too — daytime running lights are not enough.
7. When you pass a bicyclist traveling in the same direction, Illinois law requires you to leave a distance of at least:
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Correct answer: 3 feet
You must leave at least 3 feet between your vehicle and a bicyclist when passing, and keep that distance until you are safely past.
8. What does a steady red arrow mean?
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Correct answer: You may not turn in that direction until the arrow changes to green
A steady red arrow prohibits movement in the direction of the arrow. Unlike a round red light, you generally may not turn on a red arrow — wait for a green arrow or green light.
9. What is the speed limit in a school zone when the restriction is in effect?
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Correct answer: 20 mph
The school-zone speed limit is 20 mph while passing a school zone on a school day when children are present, where proper signs are posted.
10. On which side do you normally pass another vehicle?
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Correct answer: On the left
You normally pass on the left. Passing on the right is allowed only in limited situations, such as when the vehicle ahead is turning left, or on a road with two or more lanes in your direction.
11. If you are arrested for DUI and refuse to take a chemical test, the result is:
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Correct answer: A statutory summary suspension of your driving privileges
Refusing (or failing) the chemical test after a DUI arrest triggers a statutory summary suspension — an automatic administrative suspension of your license, separate from the criminal case.
12. How many hours of behind-the-wheel practice must a teen complete during the permit phase?
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Correct answer: At least 50 hours, including 10 hours at night
The GDL program requires a minimum of 50 hours of behind-the-wheel practice, at least 10 of which must be at night, certified by a parent or guardian.
13. Which of these is an illegal place to park?
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Correct answer: On a bridge or inside a highway tunnel
You may not stop, stand or park on any bridge or other elevated structure on a highway, or within a highway tunnel.
14. You back into an unattended parked car and cannot find the owner. You must:
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Correct answer: Leave a note with your name, address, and registration number securely on the vehicle
If you damage an unattended vehicle or property, you must stop and either notify the owner or leave a securely attached note with your name, address, and registration number.
15. Scott’s Law (the "Move Over" law) applies to a stopped vehicle displaying which lights?
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Correct answer: Flashing red, blue, or amber/yellow warning lights (police, fire, tow, or maintenance)
The law covers any authorized emergency vehicle displaying flashing red, blue, or red-and-blue lights, and also vehicles showing amber/yellow warning lights, such as tow trucks and highway-maintenance vehicles.
16. Even in daytime, you must turn on your headlights whenever people and vehicles are not clearly visible at a distance of:
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Correct answer: 1,000 feet
Illinois law requires headlights any time atmospheric conditions keep people and vehicles from being clearly discernible at 1,000 feet, regardless of the hour.
17. A person riding a bicycle on the roadway has:
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Correct answer: Generally the same rights and duties as the driver of a vehicle
Bicyclists must obey traffic laws and have the same rights and duties as drivers. Expect them to use the road and treat them as legitimate traffic.
18. What does an eight-sided (octagonal) red sign always mean?
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Correct answer: Stop
The octagon shape is reserved exclusively for STOP signs. You must come to a complete stop, even if you can recognize the shape before you can read the word.
19. On what days and hours does the 20 mph school-zone limit apply?
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Correct answer: On school days between 6:30 a.m. and 4:00 p.m. when children are present
The 20 mph school-zone limit applies on school days from 6:30 a.m. to 4:00 p.m., and only when children are present and close enough to be at risk from traffic.
20. When is passing on the right permitted?
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Correct answer: When the vehicle ahead is turning left, or on a road with two or more lanes going your way
You may pass on the right only when it can be done safely — when the vehicle ahead is signaling or making a left turn, or on a roadway with two or more marked lanes in your direction. You may not drive off the paved roadway to pass.
21. A first conviction for DUI in Illinois is at least:
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Correct answer: A Class A misdemeanor
A first DUI is a Class A misdemeanor, carrying possible jail time, fines, and a mandatory driver’s license revocation.
22. While practicing on an instruction permit, who must supervise the teen driver?
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Correct answer: A parent, guardian, or other adult at least 21 with a valid license
A permit holder must be accompanied by a parent, guardian, or a licensed adult at least 21 years old who is seated next to them. A permit does not allow driving alone.
23. Before leaving your vehicle unattended, you must:
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Correct answer: Stop the engine, remove the key, and set the parking brake
Illinois law requires anyone leaving a vehicle unattended to stop the engine, lock the ignition, remove the key, and effectively set the parking brake.
24. After a crash involving injury, you must remain at the scene until:
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Correct answer: You have given your information and rendered any needed aid
You must stay at the scene until you have fulfilled the duties to give information and render aid; leaving before that is the crime of leaving the scene.
25. What is the fine for a first violation of Scott’s Law?
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Correct answer: Not less than $250 and up to $10,000
A first violation of Scott’s Law is a business offense with a fine of not less than $250 and up to $10,000. If the violation causes property damage it becomes a Class A misdemeanor, and a Class 4 felony if it causes injury or death.
26. "Overdriving your headlights" at night means:
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Correct answer: Driving so fast that you cannot stop within the distance you can see ahead
If you cannot stop within the distance lit by your headlights, you are overdriving them — a hazard could appear inside your stopping distance before you ever see it. Slow down at night.
27. Before turning right across a bike lane, you should:
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Correct answer: Check for and yield to any bicyclist in the bike lane before crossing it
A bicyclist in a bike lane may be traveling faster than you expect. Signal, check the bike lane, and yield before turning across it.
28. A downward-pointing triangle sign means:
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Correct answer: Yield — slow down and give the right-of-way to others
The downward-pointing triangle is the YIELD sign. Slow down, be ready to stop, and give the right-of-way to traffic and pedestrians before proceeding.
29. When you drive through a construction or maintenance zone, you should expect:
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Correct answer: Reduced speed limits and increased fines for violations
Construction zones have reduced, posted speed limits, and traffic fines are increased in work zones — often doubled — with enhanced penalties if workers are present or a violation causes harm.
30. You are passing another car. When may you return to the right lane?
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Correct answer: When you can see the passed vehicle in your rearview mirror
Complete a pass and return to your lane only when you can see the entire front of the passed vehicle in your rearview mirror, which means you are far enough ahead to merge without cutting it off.
31. A second DUI conviction carries a mandatory minimum of:
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Correct answer: 5 days in jail or 240 hours of community service
A second DUI conviction requires a mandatory minimum of either 5 days of imprisonment or 240 hours of community service, on top of a long revocation.
32. During the permit phase, when are teen drivers restricted from driving at night?
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Correct answer: Sunday–Thursday 10 p.m.–6 a.m., and Friday–Saturday 11 p.m.–6 a.m.
The GDL nighttime driving restriction runs 10 p.m. to 6 a.m. Sunday through Thursday and 11 p.m. to 6 a.m. Friday and Saturday. Limited exceptions exist (for example, driving with a parent or to/from work or school activities).
33. When you park on any noticeable slope, the law also requires you to:
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Correct answer: Turn the front wheels so the vehicle will not roll into traffic
When standing on a perceptible grade you must turn the front wheels, in addition to setting the brake, so that if the brake fails the vehicle rolls away from traffic rather than into it.
34. If a crash results in injury, death, or property damage, drivers are expected to:
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Correct answer: Report it and cooperate with the resulting crash investigation
Crashes involving injury, death, or significant property damage must be reported. Cooperating with law enforcement’s investigation is part of a driver’s legal duty.
35. An emergency vehicle approaches you from behind with its siren and flashing lights on. You must:
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Correct answer: Pull over to the right edge of the road and stop until it passes
Yield to an approaching emergency vehicle by pulling to the right-hand edge of the road, clear of any intersection, and stopping until it has passed. Do not stop in the middle of an intersection.
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