Illinois · Cheat Sheet
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.
Short on time? This Illinois DMV cheat sheet pulls the highest-yield facts and rules from the Illinois Rules of the Road into one scrollable page — the stuff that shows up over and over on the permit test.
Skim it, then take the free 6-question check-in at the bottom to see how much actually stuck.
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.
Strong head start, but on its own — no. Combine it with at least 100 practice questions and one full mock exam.
Yes — every fact comes from the current Illinois Rules of the Road. We update content within 30 days of any handbook revision.
Not yet — but you can print this page directly from your browser. PDF cheat sheets for paid users are coming.
Rarely as exact numbers — more often as concepts (e.g., "what doubles your stopping distance?"). Understanding the rule matters more than memorizing feet.
Start with a free practice exam. No card, no commitment.
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