Theory & knowledge test guide · 2026
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How to pass the Illinois permit test (Secretary of State written exam)

In Illinois you take the permit test, the written exam, at a Secretary of State driver services facility, together with a vision test. It is based on the Illinois Rules of the Road booklet. Here is how it works and how to prepare.

What is on the test

  • 35 multiple-choice questions, including 15 on road sign identification, according to the Secretary of State's Rules of the Road workbook.
  • Pass mark: 80%, which is 28 correct. The free Illinois mock tests on PassDriveTest use the same length and pass mark.
  • Your test result stays valid until your permit expires.
  • Oral tests: if you have a language barrier or a reading or learning disability, you can ask for an oral version in person at any driver services facility, Monday to Thursday.

A study plan that works

  1. Read the Illinois Rules of the Road booklet (free on the Secretary of State website). Its chapter-review questions are good practice.
  2. Learn the signs first. With 15 sign questions, signs are almost half the test. Study each sign on the Illinois road signs tab.
  3. Take a full 35-question mock test early to find your weak areas.
  4. Review every wrong answer and find the rule in the booklet.
  5. Learn the numbers: speed limits (30 mph in urban districts, 20 mph in school zones when children are present), following distances, parking distances from hydrants, crosswalks and railroad crossings, and the zero-tolerance alcohol rule for drivers under 21.
  6. Aim for 32 or more on several different mock tests before you go.

Rules for teen permit holders

  • Permit from 15, if you are enrolled in (or within 30 days of starting) an approved driver education course, with a parent or guardian's consent. From 17 years and 3 months you can get a permit without driver education.
  • Drive only with a parent or adult aged 21 or older with a valid license and at least one year of driving experience, in the front passenger seat.
  • Curfew: Sunday to Thursday 10 p.m. to 6 a.m.; Friday and Saturday 11 p.m. to 6 a.m. (local curfews may differ).
  • Hold the permit at least 9 consecutive months and practice at least 50 hours, including 10 at night, on top of any lessons.
  • No mobile phone use while driving, including hands-free, for drivers under 19.

Adults

Applicants aged 18 to 20 who did not complete driver education in high school must take a 6-hour adult driver education course before getting a license.

What to bring

Bring documents proving your identity, date of birth, Social Security number, residency and signature, and the $20 permit fee. Under 18, bring a parent or guardian and proof of driver education enrollment. Check the Secretary of State's document list before you go.

Take a free Illinois mock test to see where you stand.

Checked against official sources on 17 October 2026.