Illinois · Permit Test Answers
Illinois permit-test facts: Questions: 35; To pass: Must pass the applicable written exam; a numeric passing threshold is not stated on the cited permit page.; Minimum age: 15 for the under-18 instruction-permit path; applicants age 18 and older have a separate one-year permit path.; Fee: $20 original Class D instruction permit; Re-takes: Knowledge-test retake policy not stated in the cited official sources.; Official handbook: Illinois Rules of the Road.
Looking for the Illinois permit test answers? Here's what most "answer key" sites won't tell you: the DMV rotates its question bank, so memorizing a leaked answer sheet won't pass you. What works is understanding "why" each answer is correct — that's exactly what this study guide does.
Below you'll find sample questions with full answer explanations, the most-missed rules from the Illinois Rules of the Road, and a free 6-question demo you can take right now.
Illinois permit-test facts: Questions: 35; To pass: Must pass the applicable written exam; a numeric passing threshold is not stated on the cited permit page.; Minimum age: 15 for the under-18 instruction-permit path; applicants age 18 and older have a separate one-year permit path.; Fee: $20 original Class D instruction permit; Re-takes: Knowledge-test retake policy not stated in the cited official sources.; Official handbook: Illinois Rules of the Road.
Each field links to the primary official source used for its review. A field marked not stated means the reviewed source did not publish that requested fact; confirm current application details with the authority.
| Fact | Answer | Evidence status |
|---|---|---|
| Questions | 35 | Verified against cited official source |
| To pass | Must pass the applicable written exam; a numeric passing threshold is not stated on the cited permit page. | Verified against cited official source |
| Minimum age | 15 for the under-18 instruction-permit path; applicants age 18 and older have a separate one-year permit path. | Verified against cited official source |
| Fee | $20 original Class D instruction permit | Verified against cited official source |
| Re-takes | Knowledge-test retake policy not stated in the cited official sources. | Not stated on the cited official page |
| Official handbook | Illinois Rules of the Road | Verified against cited official source |
Official source
Field evidence reviewed: 2026-09-14 (retrieved)
Three sample questions from our practice bank. Read the explanation after each.
Question 1 · Speed limits
Unless otherwise posted, what is the default speed limit on Illinois interstates and tollways?
Correct answer: 70 mph
70 mph on Illinois interstates and tollways unless a sign says otherwise.
Question 2 · Alcohol and drugs
In Illinois, what blood alcohol concentration (BAC) is illegal for drivers age 21 and older?
Correct answer: 0.08% or more
0.08% BAC is the legal limit for drivers 21 and older.
Question 3 · Right of way
In Illinois, at a four-way stop where two vehicles arrive at the same time, who has the right of way?
Correct answer: The vehicle on the right
Tie at a 4-way stop? The vehicle on the right goes first.
Your first full mock exam is free.
The DMV does not publish its answer key — and any site claiming to have it is either outdated or making it up. The legitimate way to "know the answers" is to learn the rules from the Illinois Rules of the Road and practice with handbook-aligned questions, like the ones on this site.
Our questions are written from the same source material (the Illinois Rules of the Road) and follow the same rules and reasoning. You'll learn the underlying rule, so when the DMV asks the same concept with different wording, you'll still get it right.
Memorizing answers fails the moment the wording changes. AI explanations build understanding — so when you see a similar concept on the real test, you'll reason your way to the answer instead of guessing.
At least 150 Illinois practice questions, with 3 consecutive mock exams scoring 90%+. At that level, the real Illinois test rarely contains anything you haven't already seen the rule for.
Start with a free practice exam. No card, no commitment.
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