Illinois Permit Practice Test 3
25 questions written from the 2026 Illinois Rules of the Road, with an explanation and page citation for every answer.
In Illinois, it is illegal for an adult to drive with a blood-alcohol concentration (BAC) of:
Keyboard: press 1–4 or A–D to answer, Enter for the next question, S to save, R to read aloud, P to pause reading, L to listen and answer.
About this test
These questions were written from the 2026 Illinois Rules of the Road (2026). 12 of the 20 Illinois questions in this test cover rules that are specific to Illinois or differ between states. Every answer comes with an explanation and a link to the exact page it comes from, so you can check it yourself.
Your answers are saved in this browser. Questions you miss go to My mistakes so you can practice them again.
Sample questions from this test
In Illinois, it is illegal for an adult to drive with a blood-alcohol concentration (BAC) of:
- A .15% or more
- B .10% or more
- C .05% or more
- D .08% or more
Show answer
D. .08% or more
It is illegal to drive with a BAC of .08% or more. You can still be convicted of DUI below .08% if your driving is impaired, so the only safe choice is not to drink and drive.
When passing a bicyclist in Illinois, how much space must you leave?
- A At least 6 feet, always
- B At least 3 feet
- C At least 1 foot
- D At least 2 feet
Show answer
B. At least 3 feet
Pass bicyclists slowly with at least 3 feet between them and your vehicle's side mirror, including riders on the shoulder or in a bike lane. If you cannot give 3 feet, wait until you can.
View diagram
When entering an expressway from a speed-change lane, what should you do?
- A Merge right away, even before reaching the speed of the traffic
- B Stop at the end of the ramp and wait for a large gap
- C Signal, find a gap, match traffic speed and merge when safe
- D Merge slowly so traffic can go around you
Show answer
C. Signal, find a gap, match traffic speed and merge when safe
A speed-change lane lets you reach the speed of expressway traffic before merging. Signal, look for an opening, match the traffic speed and merge when it is safe.
View diagram
What rule does the Illinois handbook recommend for keeping a safe following distance in good conditions?
- A The three-second rule
- B The one-second rule
- C The ten-foot rule
- D The five-car-length rule
Show answer
A. The three-second rule
Pick a fixed object and count 'one-thousand-one, one-thousand-two, one-thousand-three' after the car ahead passes it. If you reach the object before three, you are too close. Following too closely causes most rear-end crashes.
A 17-year-old passenger in your back seat refuses to buckle up. Under Illinois law, who is responsible?
- A The driver, who must make sure all passengers obey the belt law
- B Nobody, because back-seat belts are optional
- C The passenger's parent, wherever they are
- D Only the passenger, since they are old enough to decide for themselves
Show answer
A. The driver, who must make sure all passengers obey the belt law
It is the driver's responsibility to make sure all passengers follow the safety belt law and the Child Passenger Protection Act. If a passenger cannot buckle themselves, the driver must do it.