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Iowa CDL General Knowledge Test 8 (IA)

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
  • Based on 2024 IA commercial driver's license manual
  • Updated for July 2024
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
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IA commercial driver's license
5 out of 5,
1 votes

About this test

7 min to complete
Available in EN and ES

This Iowa General Knowledge practice test contains another 50 questions based on the official CDL manual. All questions have been updated for July 2024. These questions are designed to prepare you for the General Knowledge portion of your Iowa Commercial Driver’s License exam. They are multiple-choice and offer three possible answers for each question. Only one of those three answers is correct, so choose carefully. If you’re not sure about the correct answer, you can use the hint provided for each question. As you work your way through these questions, you’ll begin to notice that the hint will point you to the correct answer without giving away the correct answer itself. This should allow you to make an informed decision about the correct answer, even if you don’t actually know it. Every time you answer a question, you’ll get immediate feedback with a detailed explanation, so you won’t need to wait until the end of the test to know the correct answers. Our CDL practice tests are not timed, so you can take as long as you need to answer each question. Good luck!

Enhance your preparation with our comprehensive General Knowledge test collection, tailored to cover all key topics of the CDL exam. For a complete understanding of the expenses involved, check out our guide on CDL license cost, and for a step-by-step guide to getting your CDL, visit our CDL license guide.

What to expect on the actual IA CDL exam




correct answers to pass


passing score

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