FREE IA CDL General Knowledge Marathon

IA commercial driver's license
Iowa Commercial Driver's License.

Ready to put your new knowledge to the test? This Iowa CDL General Knowledge Marathon is a super-challenging study tool that contains all 330 questions from our database for this IA endorsement. If you select a wrong answer, we’ll remember that question and will display it to you again at the end of the exam until you’ve answered that question correctly. In other words, the Marathon will cycle through your missed questions until you answer each one correctly. You must make a 100% to pass. We suggest you attempt this one after you have practiced the state’s “regular” tests, but before the “Exam”. Good luck!

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Pass the knowledge test, or get your money back. Guaranteed.

  • 32 Members-Only practice tests across all endorsements
  • 400+ additional questions (including the ones most people miss!)
  • 9 Exclusive Cheat Sheets (including the DMV's 171 most frequently asked questions)
  • Study and track your progress on any device, anywhere

PLUS: No ads, unlimited re-takes, our Pass Guarantee, and more!

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Iowa CDL General Knowledge Test Fact Sheet:

How many questions:50
How many correct answers to pass:40
Passing score:80%

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