Illinois Permit Practice Test 3
20 new questions · no repeats from Test 1 or 2 · Updated July 12, 2026
The third full set of 20 — no repeats from Tests 1 or 2 — rounding out every topic the real exam draws from. The real Illinois exam is 35 questions at 80% to pass — 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. A driver with a BAC below 0.08 can still be arrested for DUI if:
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Correct answer: Alcohol or another drug renders them incapable of driving safely
The 0.08 figure is a threshold at which you are presumed under the influence, but you can be convicted at a lower BAC if the officer and evidence show your driving was impaired.
2. Which three tests must a new Illinois driver typically pass to be licensed?
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Correct answer: A vision screening, a written knowledge test, and a driving (road) test
Illinois licensing normally requires a vision screening, a written knowledge test, and a behind-the-wheel driving test. The Class D written test contains a minimum of 35 questions.
3. Parking on a sidewalk, on a crosswalk, or within an intersection is:
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Correct answer: Prohibited
You may never stop, stand or park on a sidewalk, on a crosswalk, or within an intersection — these areas must stay clear for pedestrians and turning traffic.
4. The main purpose of required liability insurance is to:
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Correct answer: Pay for injuries and property damage you cause to others in a crash
Liability insurance covers the injuries and damage you cause to other people and their property. It is the coverage the state requires so victims can be compensated.
5. You are on a road that ends at a T-intersection with no signs or signals. Who yields?
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Correct answer: You do — traffic on the through road has the right-of-way
At an uncontrolled T-intersection, a driver on the road that ends (the stem of the T) must yield to traffic on the through road, which continues straight.
6. A road is often most slippery:
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Correct answer: During the first few minutes of rain after a dry spell
When rain first begins, it mixes with oil and dust on the pavement to form a slick film. That mix is most slippery in the first few minutes, before heavier rain washes it away.
7. Mopeds and motor-driven scooters usually travel slower than other traffic, so you should:
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Correct answer: Slow down and pass only when it is safe and legal
Treat a slower moped or scooter like any slow vehicle: be patient and pass only where it is legal and you have a clear, safe gap.
8. A green arrow pointing left at an intersection means:
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Correct answer: You may turn left and oncoming traffic is being held by a red light
A green (protected) arrow means you may proceed in the direction it points; oncoming traffic and pedestrians are stopped. Still scan the intersection before turning.
9. A posted speed limit sign tells you:
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Correct answer: The maximum legal speed under ideal conditions — you may need to drive slower
A posted limit is the maximum allowed under ideal conditions. In rain, snow, fog, heavy traffic, or poor visibility, you must reduce your speed to what is reasonable and safe.
10. What is the correct hand signal for a right turn?
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Correct answer: Left arm bent upward at the elbow, hand pointing up
A right-turn hand signal is the left arm bent upward at the elbow with the hand pointing up. Arm straight out signals a left turn; arm bent downward signals slowing or stopping.
11. Driving after using cannabis in Illinois:
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Correct answer: Is DUI if you are impaired or over the legal THC limit
Legal cannabis does not make impaired driving legal. Driving under the influence of cannabis — or with THC in your blood above the legal limit — is DUI.
12. What score must you achieve to pass the Illinois Class D written knowledge test?
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Correct answer: At least 80% correct
Illinois regulation requires 80% correct to pass the Class D written test. On a 35-question test that means 28 correct answers, so you can miss no more than 7.
13. Stopping, standing, or parking a vehicle on railroad tracks in Illinois carries:
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Correct answer: A mandatory fine of $500 or 50 hours of community service
Illinois law imposes a mandatory $500 fine or 50 hours of community service for stopping, standing, or parking on railroad tracks — a stalled or parked vehicle on the tracks is a deadly hazard.
14. If you are in a crash that injures or kills someone, the law requires you to:
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Correct answer: Stop, give your information, and render reasonable aid to the injured
A driver in a crash involving injury or death must stop, give name, address, and registration number, show a license on request, and render reasonable assistance to anyone hurt.
15. You are about to enter a road from a private driveway or alley. What must you do?
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Correct answer: Stop and yield to all traffic and pedestrians on the road
A driver emerging from a driveway, alley, building, or private road must stop and yield to pedestrians on the sidewalk and to vehicles already on the roadway.
16. Illinois law requires your headlights to be on:
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Correct answer: From sunset to sunrise and whenever weather requires your wipers
Headlights are required from sunset to sunrise, whenever rain, snow, or fog requires windshield wipers, and any time people or vehicles are not clearly visible at 1,000 feet.
17. At night, a single headlight in the distance:
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Correct answer: May be an approaching motorcycle that is closer and faster than it appears
A motorcycle’s single headlight is easy to misjudge for distance and speed at night. Assume it could be closer and moving faster than it looks, and do not pull out in front of it.
18. You approach an intersection where the traffic signals are completely dark (not working). What should you do?
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Correct answer: Treat it as a four-way stop — stop, then proceed in turn
When a traffic signal is dark due to a power failure, treat the intersection as an all-way (four-way) stop: every driver stops and proceeds in turn, yielding to whoever arrived first.
19. Certain four-lane divided highways in Illinois may be posted at what higher limit?
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Correct answer: 65 mph
Four-lane divided highways designated by the Department of Transportation may be posted at 65 mph, higher than the 55 mph default for other highways but below the 70 mph interstate maximum.
20. After you complete a turn or lane change, what should you check about your signal?
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Correct answer: That it has turned off — cancel it manually if it did not self-cancel
A signal left blinking after a maneuver can mislead others into thinking you are about to turn. Make sure it cancels, and turn it off by hand if it does not.
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