IA CDL Combination Vehicles Practice Test 2025

Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
Based on 2025 IA commercial driver's license manual
Triple-checked for accuracy
Updated for March 2025

Practice makes perfect when it comes to taking the Iowa CDL Combination Vehicles test. Do not go in blind and take the real test without trying the practice tests here first. When you take your test at the DMV, your answers will be recorded and part of your permanent record. Give yourself the opportunity to succeed by taking the practice test first. That way, you will have all the knowledge you need to fly through the real test with ease. Then, you will get your CDL Combination Vehicles endorsement without a problem.

Taking Your Practice Test
The practice test is designed to closely resemble the official CDL Combination Vehicles test. Each question is taken from the official Iowa CDL manual and closely resembles the questions on the real test. This gives you the experience necessary to master the questions before you sit for the actual test. You can’t get this type of information by simply studying for the test.
Because the practice test closely resembles the actual test, it is essential that you pay close attention to each of the 20 questions. You might have some trouble from time to time, and that is OK. That is actually the point of a practice test. Simply note down the number of the troublesome question and then study that subject some more. Then, retake the test. The great thing about a practice test is you can take it as often as you would like before you go to the DMV to take the real thing.

Taking the Official Test
When you’re finally ready to take the official test, you will need to go to the DMV. Remember everything you learned from your IA Combination Vehicles practice test, and don’t be afraid to take the test one more time if necessary. Then, go into the DMV with confidence, knowing that you’re going to do well on the test.
Good luck with your practice test! Remember that as long as you use the practice test as a guide, you have the information necessary to obtain your endorsement. You are well on your way to achieving your goals!

9 min to complete

Available in EN and ES

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What to expect on the actual IA DOT exam

questions

correct answers to pass

80%

passing score

Helpful links

IA DMV website

Official Iowa CDL manual (2025)

More IA DOT Written Exam Resources

IA CDL Combination Vehicles Test

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Our commitment to accuracy and quality in our practice tests

Explore our rigorous, multi-tiered verification process that ensures each question mirrors the official manual for unparalleled accuracy.

Written by Andrei Zakhareuski Updated over a week ago

At Driving-Tests.org, we understand the importance of reliable and accurate practice tests to help you prepare for your DMV exam. That's why we've developed a meticulous process to create and continually update our practice questions, ensuring they reflect the most current driving laws and regulations.

Here's an inside look at how we maintain the highest quality in our practice tests.

Content Creation and Verification Process

Alignment with Official Manuals:
Every question we develop is based on the most recent version of each state's official driving manual. Our team regularly monitors each state DMV's website for the latest updates to ensure our practice tests are always aligned with the most current information.
Community Feedback Integration:
We leverage feedback from our vast community of users to understand which topics are most frequently tested. This helps us focus on the areas that are most relevant and beneficial for your preparation.
Expert Content Creation:
Our in-house editor, Steven, who has extensive experience in driver education, crafts each question with precision. He conducts a thorough review of each question against the official manuals to ensure accuracy.
Rigorous Review Process:
Once Steven has finalized a set of questions, our team conducts a joint review session. This second level of scrutiny involves content accuracy, proofreading, and fact-checking to eliminate any errors.
User Feedback Mechanism:
After a question goes live on our site, we keep the lines of communication open. Each question features a feedback button, inviting users to report any issues or errors. This continuous feedback loop allows us to address and rectify any concerns promptly.
Responsive Updates:
In line with our commitment to accuracy, we quickly update our practice questions to reflect any changes in the DMV manuals. Additionally, we update the free electronic copy of the state's driver's license manuals on our site, typically within a few days after the DMV publishes them.

Our thorough quality control process ensures that you have access to practice tests that are as accurate and up-to-date as possible. We believe in the power of well-prepared drivers and are dedicated to providing you with the best study tools to help you succeed on your DMV exam.

IA CDL Combination Vehicles Practice Test

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