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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.
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Extensive Iowa CDL practice tests: Ace the Iowa CDL tests with our expert practice questions and practice tests for each endorsement.
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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
Take the full Iowa CDL General Knowledge test
- 50 questions
- 60 mistakes allowed to pass
HazMat
Practice Iowa CDL HazMat questions
- Nearly 250 questions
- 23 parts and 7 mini tests
Take the full Iowa CDL HazMat test
- 30 questions
- 30 mistakes allowed to pass
Passenger Vehicles
Practice Iowa CDL Passenger Vehicles questions
- Nearly 100 questions
- 7 parts and 1 mini test
Take the full Iowa CDL Passenger Vehicles test
- 20 questions
- 20 mistakes allowed to pass
Air Brakes
Practice Iowa CDL Air Brakes questions
- Nearly 200 questions
- 16 parts and 4 mini tests
Take the full Iowa CDL Air Brakes test
- 25 questions
- 25 mistakes allowed to pass
Combination Vehicles
Practice Iowa CDL Combination Vehicles questions
- Nearly 100 questions
- 8 parts and 2 mini tests
Take the full Iowa CDL Combination Vehicles test
- 20 questions
- 20 mistakes allowed to pass
Doubles/ Triples Trailers
Practice Iowa CDL Doubles/ Triples Trailers questions
- More than 50 questions
- 5 parts and 1 mini test
Take the full Iowa CDL Doubles/ Triples Trailers test
- 20 questions
- 20 mistakes allowed to pass
Tanker Vehicles
Practice Iowa CDL Tanker Vehicles questions
- More than 50 questions
- 5 parts and 1 mini test
Take the full Iowa CDL Tanker Vehicles test
- 20 questions
- 20 mistakes allowed to pass
School Bus
Practice Iowa CDL School Bus questions
- More than 100 questions
- 11 parts and 3 mini tests
Take the full Iowa CDL School Bus test
- 20 questions
- 20 mistakes allowed to pass
Pre-Trip Inspection
Practice Iowa CDL Pre-Trip Inspection questions
- More than 100 questions
- 11 parts and 3 mini tests
Take the full Iowa CDL Pre-Trip Inspection test
- 20 questions
- 20 mistakes allowed to pass
More Iowa CDL Study Resources
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Iowa CDL Basic Knowledge
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