1. It is illegal for a driver age 21 or older to operate a vehicle with a BAC of ____ or higher.
- 0.02%
- 0.08%
- 0.10%
Explanation: Illinois's legal BAC limit is 0.08% for drivers 21 and older. Drivers under 21 face zero tolerance (0.00%).
Illinois DMV is administered by the Illinois Secretary of State, headquartered in Springfield. The official Illinois written knowledge exam has 35 questions, and drivers must answer 28 correctly (80%) to pass. Our practice tests match the exact format, topics, and difficulty of the real Illinois DMV test.
What makes the Illinois DMV test unique?
Illinois's test emphasizes rail-grade crossings (the state has the second-most in the US), Scott's Law (move-over for emergency vehicles), and bicycle right-of-way on Chicago-area streets.
Scott's Law: drivers must slow down and change lanes away from stopped emergency, tow, or maintenance vehicles — violations start at $250.
Teen applicants also take a 20-question road signs section that must be passed with 15 correct.
Browse all Illinois questions
282 indexed questions with full answers, explanations, and law citations.
What does this sign indicate?
US DMV standard (applies in all states)
What does this sign indicate?
US DMV standard (applies in all states)
What does this sign indicate?
US DMV standard (applies in all states)
What does a Wrong Way sign indicate?
US DMV standard (applies in all states)
What does a ONE WAY sign indicate?
US DMV standard (applies in all states)
What does this sign means?
US DMV standard (applies in all states)
What does a Speed Limit sign indicate?
US DMV standard (applies in all states)
What does this sign mean?
US DMV standard (applies in all states)
What does a railroad crossbuck sign indicate?
US DMV standard (applies in all states)
What does a PEDESTRIAN CROSSING sign indicate?
US DMV standard (applies in all states)
Which statement about sign shapes is NOT correct?
Alabama Driver Manual
A triangular sign is most commonly used to mean ____.
Alabama Driver Manual
Children should ride in ____.
US DMV standard (applies in all states)
Alcohol affects driving by ____.
Alabama Driver Manual
Drugs can affect driving ____.
Alabama Driver Manual
Which option is NOT a good way to reduce distraction?
US DMV standard (applies in all states)
What should you do if an oncoming vehicle's headlights are bright?
US DMV standard (applies in all states)
In fog you should generally use ____.
US DMV standard (applies in all states)
What should you do if your vehicle begins to hydroplane?
Alabama Driver Manual
What should you do if your vehicle starts to skid?
US DMV standard (applies in all states)
Strong crosswinds can be especially dangerous for ____.
Alabama Driver Manual
What should you do if your vehicle breaks down?
Alabama Driver Manual
If your brakes fail, you should first ____.
US DMV standard (applies in all states)
What should you do if your engine catches fire while driving?
Alabama Driver Manual
Why is tailgating dangerous?
Alabama Driver Manual
What should you do when usually pass another vehicle?
Alabama Driver Manual
Which statement about passing is NOT correct?
Alabama Driver Manual
What should you do if you cannot complete a pass safely?
Alabama Driver Manual
Before returning to your lane after passing, you should make sure ____.
Alabama Driver Manual
What should you do when approaching a stopped emergency or service vehicle with flashing lights?
US DMV standard (applies in all states)
Which statement about roadside emergency scenes is NOT correct?
US DMV standard (applies in all states)
Before changing lanes or merging you should check ____.
US DMV standard (applies in all states)
Good steering control begins with ____.
US DMV standard (applies in all states)
What is the purpose of a speed limit?
US DMV standard (applies in all states)
Why is following distance important?
US DMV standard (applies in all states)
What does the 3-second rule for following distance mean?
US DMV standard (applies in all states)
When two vehicles arrive at an uncontrolled intersection at about the same time, who should usually go first?
US DMV standard (applies in all states)
At a four-way stop, the vehicle that should go first is usually the one that ____.
US DMV standard (applies in all states)
What should you do if you see a blind pedestrian using a white cane or guide dog?
US DMV standard (applies in all states)
What should you do when an emergency vehicle approaches with siren or flashing lights?
US DMV standard (applies in all states)
What should you do when entering a roundabout?
US DMV standard (applies in all states)
Once you are inside a roundabout you should generally ____.
Alabama Driver Manual
Which statement about pedestrians is NOT correct?
Alabama Driver Manual
When a stopped school bus is using red warning signals and a stop arm, what is the correct response?
US DMV standard (applies in all states)
Which statement about a school bus stopped with red warning signals is NOT correct?
US DMV standard (applies in all states)
Which statement about roundabouts is NOT correct?
US DMV standard (applies in all states)
What does it mean to 'yield the right-of-way'?
US DMV standard (applies in all states)
What is the purpose of right-of-way rules?
US DMV standard (applies in all states)
What should you do before making a right turn?
Alabama Driver Manual
A left turn on red may be allowed only ____.
Alabama Driver Manual
What should you do before backing your vehicle?
US DMV standard (applies in all states)
What should you do when parking on a hill?
US DMV standard (applies in all states)
Which option is NOT a safe step when parking on a hill?
Alabama Driver Manual
What should you do before getting out of a parked vehicle on the traffic side?
Alabama Driver Manual
Before turning you should reduce speed to a ____ and watch for other road users.
Alabama Driver Manual
Backing is safest when you ____.
Alabama Driver Manual
What does 'parallel parking' mean?
US DMV standard (applies in all states)
What does a red curb indicate?
US DMV standard (applies in all states)
What does a yellow curb indicate?
US DMV standard (applies in all states)
What is the purpose of handicap parking spaces?
US DMV standard (applies in all states)
Large trucks have ____.
US DMV standard (applies in all states)
Bicyclists generally have ____.
Alabama Driver Manual
Before opening a door next to traffic you should check for ____.
Alabama Driver Manual
Which statement about bicyclists is NOT correct?
Alabama Driver Manual
What should you do when waiting behind another vehicle at railroad tracks?
US DMV standard (applies in all states)
What does 'sharing the road' mean for drivers?
US DMV standard (applies in all states)
What is a 'bike lane' and what does it mean for drivers?
US DMV standard (applies in all states)
What does 'vulnerable road user' mean?
US DMV standard (applies in all states)
What is the meaning of a 'no-zone' around large trucks?
US DMV standard (applies in all states)
What does it mean to 'share the road with motorcycles'?
US DMV standard (applies in all states)
Which of the following is true about sharing the road with cyclists?
US DMV standard (applies in all states)
Which of the following is true about pedestrian right-of-way?
US DMV standard (applies in all states)
Real-format questions with the reasoning behind every answer.
Explanation: Illinois's legal BAC limit is 0.08% for drivers 21 and older. Drivers under 21 face zero tolerance (0.00%).
Explanation: A crash report is required for injury, death, or property damage over $1,500. The threshold drops to $500 if any driver involved is uninsured.
Explanation: Signals communicate your intent before turns, lane changes, and pulling out.
Answers to the questions Illinois test-takers ask most.
Driving laws vary by state — compare requirements.
35 questions · 80% to pass. Start practicing free.