CDL Endorsements Study Pack 2026: Air Brakes, Combination, Doubles/Triples, Tanker, Hazmat
One printable pack for all five CDL endorsement knowledge tests, with 115 practice questions, 250 drills, and 150 flashcards.
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About this book
Once you pass the CDL general knowledge test, the endorsements are where the real job options open up: air brakes for almost any heavy truck, combination vehicles for tractor-trailers, doubles and triples, tank vehicles, and hazardous materials. Each is its own knowledge test, and each has its own set of numbers to memorize.
This pack covers all five in one place. Every chapter is a tight cheat sheet that ends in an Exam Traps box naming the exact wordings drivers miss, and a dedicated numbers section puts every psi, foot, and pound on four pages you can review in the testing center parking lot. Every fact is checked against the current AAMVA CDL Manual and the federal regulations, and the pack flags stale figures that other guides still repeat.
What's inside
- Five cheat-sheet chapters: Air Brakes, Combination Vehicles, Doubles and Triples, Tank Vehicles (N), and Hazardous Materials (H)
- 115 practice questions matched to real test lengths (Air Brakes 25, Combination 20, Doubles/Triples 20, Tank 20, Hazmat 30), each with a written explanation
- 250 fill-in-the-blank drills with a full answer key
- 150 cut-and-fold flashcards, 30 per test
- "The Numbers": every threshold in the pack on four pages
- Diagnostic chart, 2-week study plan, test-day checklist, and a 63-term glossary
Who it's for
- CDL permit holders adding endorsements before a first trucking job
- Working drivers adding tanker or hazmat to qualify for better-paying loads
- CDL school students who want extra practice beyond the state manual
Format details
CDL Endorsements Study Pack is a digital PDF (120 pages, printable PDF). It is formatted for 8.5 x 11 inch pages, prints cleanly at home or at a print shop, and reads well on phones, tablets, and computers. Purchase is an instant digital download through Etsy: no physical item ships, and the file stays available in your Etsy account.
Common questions
Which CDL endorsement tests does this study pack cover?
All five knowledge tests most drivers take: Air Brakes, Combination Vehicles, Doubles and Triples, Tank Vehicles (N endorsement), and Hazardous Materials (H endorsement). You only study the parts you need; a page near the front maps your situation to the right chapters.
How many questions are on the CDL hazmat test?
The hazmat knowledge test is typically 30 questions, and the pack's hazmat practice set matches that length. Air Brakes is usually 25 questions, and Combination, Doubles/Triples, and Tank are usually 20 each. Most states require 80 percent to pass.
Is the CDL endorsements pack up to date for 2026?
Yes. It is built on the current AAMVA CDL Manual and 49 CFR regulations, cross-checked with current FMCSA and TSA guidance, and it calls out outdated figures that older guides still print.
Is this printable?
Yes. It is a 120-page PDF sized for US Letter paper with a linked table of contents. Print it at home or study on a phone or tablet. It is an instant download through Etsy; nothing is shipped.