Commercial Drivers
A CDL is required to operate large vehicles, hazardous material transport, or passenger vehicles (15+ people) for commerce in the U.S.
How to Get a CDL
How to become a
Third-Party Tester
Third-party testers are companies or agencies that are authorized and trained by the Iowa DOT to administer CDL knowledge and skills tests.
CDL Practice Test App
The Iowa CDL test app offers 600+ exam-like questions, lifetime access to the CDL Manual, and test-taking strategies to help you pass on the first try
