Download the official CDL handbook for your state. Each handbook contains state-specific regulations, requirements, and testing information in addition to federal CDL standards.
The Commercial Driver's License (CDL) handbook is the official study guide published by each state's Department of Motor Vehicles. It contains all the information you need to know to pass the CDL knowledge tests and become a safe, professional commercial driver.
All CDL knowledge test questions come directly from the CDL handbook. Thorough study of your state's CDL manual is essential for passing the written exams. Understanding this material also prepares you for safe operation of commercial vehicles and the skills test.
Essential knowledge areas for commercial driver licensing
While federal regulations establish baseline CDL requirements, each state publishes its own CDL handbook that may include state-specific information and procedures.
Utah drivers can access the official CDL manual from the Utah Driver License Division. The manual is available in PDF format for download or can be picked up at any DLD office.
Always study the CDL handbook from the state where you'll be taking your CDL test. While most content is standardized based on federal regulations, there may be state-specific procedures, fees, or requirements that appear on your state's knowledge test.
Find your state's CDL handbook:
Simply reading the handbook once isn't enough. Use these proven study strategies to master the material and retain it for both the test and your driving career.
The CDL knowledge tests often include questions about specific numbers, distances, weights, and time limits. Here are some critical figures to memorize:
While the CDL handbook is your primary study resource, these additional tools will enhance your preparation: