Practice knowledge test: CDL

This commercial driver license (CDL) practice knowledge test consists of 20 multiple-choice questions similar to those on the actual test.

All test information is included in the Washington State Commercial Driver Guide. (Note: Beginning July 1, 2005, traffic offenses considered serious count against a CDL record regardless if they were committed in a personal vehicle or a commercial motor vehicle. For more information, see pages 1-11 of the Commercial Driver Guide.)

To take the practice test, choose an answer and click on the corresponding letter.

Good luck!