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Illinois SOS handbooks

The SOS publishes a handbook for each written test. Every question on the Illinois knowledge tests comes from them, so read the one for your license before practicing.

Links checked on September 2, 2026. They open the agency's own copy; nothing is hosted here.

The Chicago skyline with its tallest black skyscraper along the lakefront, in Illinois
Chicago skyline

Car

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CDL

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The SOS

Office of the Illinois Secretary of State, Driver Services Department

DMV Exam Test is not affiliated with the SOS. To book a test or pay fees, use the official website.

How to study with the handbook

  1. Read the chapters on signs, right-of-way and safe driving first: they are the bulk of every test.
  2. Note the numbers specific to Illinois: speed limits, alcohol limits, points and teen license rules.
  3. Take a practice test, and go back to the handbook for every question you miss.