Created in partnership with AAMVA and Iowa DOT, the Official CDL Test Prep has everything you need to pass your Iowa Commercial Drivers License (CDL) test the first time!

With over 600 exam-like questions, lifetime access to the complete CDL Manual, and dozens of test-taking strategies, CDL Test Prep helps you get the score you need. Spanning every stage of a CDL professional's career, from pre-licensing and your initial license to driving combinations, hazardous materials, school buses, and more, CDL Test Prep offers a comprehensive review of critical material.