This test is based on the official 2020 CDL Manual FREE Iowa CDL General Knowledge Practice Test 2020 | IA

1Ready to take your career to the next level? Obtaining your CDL opens a whole new world of opportunities! Want to make sure that you are ready to pass the DMV exam? Try our Free Iowa CDL General Knowledge Practice Test! We ask you the same types of questions that you will see on the actual exam so that you can become comfortable with the content. Expect to see questions about traffic signs, turn signals, basic commercial vehicle inspection and operation. You need to answer 80% of the 50 questions correctly to pass. We even give you explanations for each question so that you can study up for the real exam.

Passing the CDL general knowledge test is the first step to starting your professional driving career. We can help you pass the challenging exam on the first try. Take our Free Iowa General Knowledge Practice Test to find out where you stand!

  • Identify Knowledge Gaps
  • Track Your Progress
  • Unlimited Attempts
  • Get Detailed Feedback
Iowa CDL General Knowledge Overview:
50Total number of questions
40Number of questions required to pass
80Percentage required to pass
Iowa CDL Manual 2020

Get the latest (2020) official IA CDL Manual.

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