Knowledge test: CDL

You must pass the knowledge test:

You may take the knowledge test at any CDL/CLP office location that offers testing. Test scores are valid for 1 year from the date of the test.

How to prepare

  • Study the Commercial driver guide to prepare for the test. All the information you’ll need to pass the test is in this guide.
  • You may also take the practice test for a sample of the types of questions that will be on the test.

Possible penalties for trying to get a CDL fraudulently are:

  • Cancellation of your driver license.
  • Having to wait up to 1 year before you can reapply for a CDL.

Questions? Need help?

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