Free Hazmat Endorsement Cheat Sheet
A good cheat sheet does one job: it organizes what to review so nothing slips through before test day. This page is a free, printable-style checklist for the CDL Hazmat endorsement, focused on the visual recognition piece that trips most people up.
It is a study aid only. CDL Placards is an independent tool and is not affiliated with any government agency, and no checklist can guarantee a pass. Use this alongside your official state CDL manual.
What to review before your Hazmat test
Work top to bottom. If you can do all of this from memory, you are in good shape on the placard side of the test.
- Name all nine hazard classes and their colors
- Recognize the symbol inside each placard diamond
- Read the class or division number at the bottom
- Tell apart the common look-alike placards
- Know when a four-digit identification number appears
- Practice under a timer so recognition is fast, not just eventually correct
Try it before you study
A quick, demo-only taste of how the practice works. Pick what each generic hazard diamond means and get instant feedback.
What hazard does this placard show?
That is the idea: see the sign, name the hazard, and keep the ones you miss in a review pile. The full app drills all nine hazard classes.
Frequently asked questions
- Is the cheat sheet free?
- Yes. The checklist on this page is free to use, and waitlist members get the downloadable visual placard cheat sheet when it is ready.
- Can a cheat sheet replace the official manual?
- No. It is a quick-review aid. Your official state CDL manual is the source of truth for what you need to know and how the test is run.