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CDL Practice Test 2025 Now!

A Illinois Commercial Driver’s License (CDL) opens countless opportunities in a dynamic industry like commercial trucking, and we are here to ensure you seize them with confidence! Say goodbye to guesswork and hello to a no-stress way to ace your CDL written test on your first try with CDL Prep.

Put your trust in us and what you can receive:

Extensive Illinois CDL practice tests: Ace the Illinois CDL tests with our expert practice questions and practice tests for each endorsement.

Expert blogs: Address all your concerns on Illinois CDL through our blog.

Official CDL handbook: Comprehend all rules and tips with this ultimate reference.

100% FREE access questions: Unlimited attempts, unlimited improvement for free!

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Illinois CDL Practice Test

Ace all Illinois CDL written tests with our two powerful systems:
Master part by part in Practice mode and experience the real test atmosphere in Test mode

General Knowledge

Practice Illinois CDL General Knowledge questions

  • More than 500 questions
  • 52 parts and 16 mini tests
Practice now

Take the full Illinois CDL General Knowledge test

  • 50 questions
  • 60 mistakes allowed to pass
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HazMat

Practice Illinois CDL HazMat questions

  • Nearly 250 questions
  • 23 parts and 7 mini tests
Practice now

Take the full Illinois CDL HazMat test

  • 30 questions
  • 30 mistakes allowed to pass
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Passenger Vehicles

Practice Illinois CDL Passenger Vehicles questions

  • Nearly 100 questions
  • 7 parts and 1 mini test
Practice now

Take the full Illinois CDL Passenger Vehicles test

  • 20 questions
  • 20 mistakes allowed to pass
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Air Brakes

Practice Illinois CDL Air Brakes questions

  • Nearly 200 questions
  • 16 parts and 4 mini tests
Practice now

Take the full Illinois CDL Air Brakes test

  • 25 questions
  • 25 mistakes allowed to pass
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Combination Vehicles

Practice Illinois CDL Combination Vehicles questions

  • Nearly 100 questions
  • 8 parts and 2 mini tests
Practice now

Take the full Illinois CDL Combination Vehicles test

  • 20 questions
  • 20 mistakes allowed to pass
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Doubles/ Triples Trailers

Practice Illinois CDL Doubles/ Triples Trailers questions

  • More than 50 questions
  • 5 parts and 1 mini test
Practice now

Take the full Illinois CDL Doubles/ Triples Trailers test

  • 20 questions
  • 20 mistakes allowed to pass
Take the test now

Tanker Vehicles

Practice Illinois CDL Tanker Vehicles questions

  • More than 50 questions
  • 5 parts and 1 mini test
Practice now

Take the full Illinois CDL Tanker Vehicles test

  • 20 questions
  • 20 mistakes allowed to pass
Take the test now

School Bus

Practice Illinois CDL School Bus questions

  • More than 100 questions
  • 11 parts and 3 mini tests
Practice now

Take the full Illinois CDL School Bus test

  • 20 questions
  • 20 mistakes allowed to pass
Take the test now

Pre-Trip Inspection

Practice Illinois CDL Pre-Trip Inspection questions

  • More than 100 questions
  • 11 parts and 3 mini tests
Practice now

Take the full Illinois CDL Pre-Trip Inspection test

  • 20 questions
  • 20 mistakes allowed to pass
Take the test now

Study with the Illinois CDL handbook

Your perfect study companion! This intensive CDL handbook is packed with all Illinois CDL rules, regulations, and helpful tips, taking you closer to your CDL dream.

  • Comprehensive coverage
  • Easy to navigate
  • 100% free & accessible

Illinois CDL Basic Knowledge

Unlock the one-stop source for everything about Illinois CDL with our expert blog!
Packed with the ultimate guide to master the basics

And much more! Click now to explore!

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Complete Guide To Illinois CDL Requirements: Latest Update

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What Is The Illinois CDL Disqualification? Causes And Penalties

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Understanding the timeline to get a CDL in Illinois

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The Complete Guide: How To Get A CDL In Illinois