Illinois Permit Test (SOS Written Test) Practice Test
Frequently asked questions
How many Illinois Permit Test (SOS Written Test) practice questions are here?+
A full bank of original Illinois Permit Test (SOS Written Test) practice questions across the official content areas, weighted like the real exam, with explanations. Free, no signup.
What is the Illinois Permit Test (SOS Written Test) exam like?+
About 35 questions, and you need 28/35 (80%)% to pass. Practice by topic here, then take the full timed mock exam to gauge readiness.
Are these the real exam questions?+
No. Every question is 100% original, written from public primary sources with explanations. We never copy real exam questions or paid prep material.
Can I study in Chinese or Spanish?+
PrepPass practice is in English, 中文 and Español. The official exam is in English — switch the question language to English any time to rehearse the exact terminology you'll see on test day.
Sample practice questions
A few real questions from this free bank, with full explanations. Use the practice tool above for the whole set.
- 1. Signs & Signals
An eight-sided red sign always means:
- a.Yield to traffic
- b.Come to a complete stop
- c.No U-turn
- d.Slow down for a curve
Answer: b
Explanation: A red octagon is a STOP sign; you must stop completely at the marked line or crosswalk, then proceed when it is safe.
- 2. Signs & Signals
A steady yellow traffic signal means:
- a.The light is about to turn red, so stop if you can safely do so
- b.Speed up to clear the intersection
- c.Stop and do not proceed
- d.Yield only to pedestrians
Answer: a
Explanation: A steady yellow warns that the signal is changing to red; stop if you can do so safely rather than trying to beat the light.
- 3. Signs & Signals
A pentagon (five-sided) sign in Illinois usually marks:
- a.A no-passing zone
- b.A hospital
- c.A school zone or school crossing
- d.A weigh station
Answer: c
Explanation: A five-sided pentagon sign warns of a school zone or school crossing; slow down and watch for children and reduced school-zone limits when in effect.
- 4. Rules of the Road & Right of Way
In Illinois, a right turn on red is:
- a.Never allowed
- b.Allowed after a full stop and yielding, unless a sign prohibits it
- c.Allowed without stopping
- d.Allowed only outside city limits
Answer: b
Explanation: You may turn right on a red light after stopping completely and yielding to pedestrians and traffic, unless a posted sign prohibits the turn.
- 5. Rules of the Road & Right of Way
When you make a left turn at a green light, you must yield to:
- a.No one, since you have a green light
- b.Only vehicles behind you
- c.Only bicycles
- d.Oncoming traffic and pedestrians crossing your path
Answer: d
Explanation: A green light allows a left turn only after yielding to oncoming vehicles and to pedestrians in the crosswalk that you would cross.
- 6. Safe Driving & Sharing the Road
The best way to share the road with a motorcycle is to:
- a.Follow closely so they know you are there
- b.Treat the motorcycle's lane as available to you
- c.Allow a full lane and keep extra following distance
- d.Pass with only a few inches of clearance
Answer: c
Explanation: Motorcycles are entitled to a full lane; give them the whole lane, increase your following distance, and check carefully for them before changing lanes or turning.
- 7. Safe Driving & Sharing the Road
Before changing lanes, you should:
- a.Signal, check mirrors, and glance over your shoulder to check the blind spot
- b.Rely only on your rearview mirror
- c.Change quickly without signaling
- d.Assume the lane is clear if traffic is light
Answer: a
Explanation: Signal your intention, check your mirrors, and turn your head to check the blind spot before moving over, because mirrors alone do not show everything beside you.
- 8. Speed & Conditions
The basic speed law in Illinois means you must:
- a.Never drive faster than is reasonable and proper for conditions
- b.Always drive the posted limit exactly
- c.Drive at least 40 mph on any road
- d.Match the speed of surrounding traffic no matter what
Answer: a
Explanation: Under the basic speed law you must never drive faster than is reasonable and proper for the conditions, which may require driving below the posted limit in rain, snow or fog.
- 9. Speed & Conditions
When must you turn on your headlights in Illinois?
- a.Only after midnight
- b.Only on interstates
- c.From sunset to sunrise and whenever weather requires wipers or you cannot see clearly
- d.Only when other cars have theirs on
Answer: c
Explanation: Illinois requires headlights from sunset to sunrise and whenever conditions such as rain, snow or fog reduce visibility or require continuous wiper use.
- 10. Alcohol, Drugs & IL Penalties and GDL
During the first 12 months (or until age 18), an Illinois teen with an initial license may carry how many passengers under age 20 who are not family?
- a.No limit
- b.Only one
- c.Up to three
- d.Up to five
Answer: b
Explanation: For the first 12 months or until turning 18, a newly licensed teen may carry only one passenger under 20 who is not a family member; after that the limit rises.