If you have any class of CDL, you must self-certify what type of driving you do. For details, see:
If you have an interstate CDL, you must keep a copy of your medical examiner’s certificate on record with us. For more information, see:
Prepare for your CDL tests with the Commercial Driver Guide.
Learn what to expect at your knowledge test, and take a practice test.
Find out about the skills tests you need to pass to get your CDL.