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Iowa CDL General Knowledge Test 12 2025

Part of mandatory Entry-Level Driver Training Course Based on 2025 IA commercial driver's license manualAvailable in EN, ES
50questions
10mistakes allowed
80%passing score

Updated for January 2025, this Iowa General Knowledge practice test contains another 50 questions based on the official CDL (Commercial Driver’s License) manual. You can use this test to prepare for the General Knowledge portion of the IA CDL exam. These questions are multiple-choice, with three possible answers for each question. Only one of those answers is correct. If you’re not sure about the correct answer, you can use the hint provided for each question. Each hint points 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. There is no time limit for completing this practice test. 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.

5 out of 5 • 1 votes.

Perfect for

  • First-time IA CDL and CLP applicants
  • CDL holders adding endorsements
  • IA CDL renewal applicants
IA commercial driver's license
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What to expect on the actual exam

How many questions50
How many correct answers to pass40
Passing score80%
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