CDL Handbook Study Guides by State
Every state publishes a commercial driver’s manual, and every one of them reads like a reference book rather than a study plan. These guides do the part the manual leaves to you: they say what each section actually covers, which knowledge test it prepares you for, and which rules inside it the exam keeps coming back to — then send you to the matching practice test.
The manuals themselves stay where they belong. Each guide links straight to the current edition on the state agency’s own site; we never host or reproduce one.
New York CDL Manual
11 sections mapped to their knowledge tests, with NY DMV citations. CDL-10, current web edition.
Michigan CDL Manual
11 sections mapped to their knowledge tests, with Michigan SOS citations. 2024 edition, built on the 2005 CDL Testing System.
Tennessee CDL Manual
11 sections mapped to their knowledge tests, with Tennessee Driver Services citations. May 2022 posting, built on the 2005 CDL Testing System.
Colorado CDL Manual
12 sections mapped to their knowledge tests, with Colorado DMV citations. June 2023 edition, revision 06/15/23, on the 2023 CDL Testing System.
Missouri CDL Manual
12 sections mapped to their knowledge tests, with Missouri DOR citations. Version 4.0, revised August 2025.
Looking for a state that isn’t here yet?
Start with the practice tests for your state — they draw on the same manual sections these guides describe.
Disclaimer: CDL Help is a private study app. We are not affiliated with, endorsed by or acting on behalf of any state DMV or driver-licensing agency, or the Federal Motor Carrier Safety Administration. State manuals are published by their own agencies and are linked, never reproduced here.