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CDL Practice Test 2025 Now!

A Iowa 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 Iowa CDL practice tests: Ace the Iowa CDL tests with our expert practice questions and practice tests for each endorsement.

Expert blogs: Address all your concerns on Iowa 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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Iowa CDL Practice Test

Ace all Iowa 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 Iowa CDL General Knowledge questions

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

Take the full Iowa CDL General Knowledge test

  • 50 questions
  • 60 mistakes allowed to pass
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HazMat

Practice Iowa CDL HazMat questions

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

Take the full Iowa CDL HazMat test

  • 30 questions
  • 30 mistakes allowed to pass
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Passenger Vehicles

Practice Iowa CDL Passenger Vehicles questions

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

Take the full Iowa CDL Passenger Vehicles test

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

Air Brakes

Practice Iowa CDL Air Brakes questions

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

Take the full Iowa CDL Air Brakes test

  • 25 questions
  • 25 mistakes allowed to pass
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Combination Vehicles

Practice Iowa CDL Combination Vehicles questions

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

Take the full Iowa CDL Combination Vehicles test

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

Practice Iowa CDL Doubles/ Triples Trailers questions

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

Take the full Iowa CDL Doubles/ Triples Trailers test

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

Tanker Vehicles

Practice Iowa CDL Tanker Vehicles questions

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

Take the full Iowa CDL Tanker Vehicles test

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

School Bus

Practice Iowa CDL School Bus questions

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

Take the full Iowa CDL School Bus test

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

Pre-Trip Inspection

Practice Iowa CDL Pre-Trip Inspection questions

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

Take the full Iowa CDL Pre-Trip Inspection test

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

Study with the Iowa CDL handbook

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

  • Comprehensive coverage
  • Easy to navigate
  • 100% free & accessible
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Iowa CDL Basic Knowledge

Unlock the one-stop source for everything about Iowa 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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