🚛 CDL Hazmat Endorsement
Free CDL Hazmat Endorsement Exam Cheat Sheet
The 20 most-tested facts for the Hazmat endorsement exam — placard rules, hazard classes, shipping paper requirements, and security plan questions. Used by 5,000+ CDL drivers who passed on their first try.
What's Inside
The Hazmat endorsement exam is based on FMCSA regulations. We tracked the most-tested concepts across hundreds of state DMV practice tests and condensed them to one page you can review the night before.
- 19 hazard classes: Explosives, Gas, Flammable Liquid, Flammable Solid, Oxidizer, Poison, Radioactive, Corrosive, Miscellaneous
- 2Placards required when carrying 1,001+ lbs of hazmat OR any amount of certain high-hazard materials
- 3Shipping papers must be within reach of the driver when driving, OR visible on the seat when out of the vehicle
- 4Never park within 300 feet of a bridge, tunnel, or building unless for deliveries under 30 minutes
- 5Security plan required for: explosives, poison-inhalation hazards, and certain radioactive materials
- …15 more inside — enter your email to get them all
Also covers:
- ✓ Forbidden vs regulated materials
- ✓ Loading/unloading rules for hazmat
- ✓ Bulk vs non-bulk packaging definitions
- ✓ Emergency response info requirements
- ✓ The most common wrong-answer traps
Free resource
Get the Free Hazmat Cheat Sheet
The top 20 most-tested facts for your exam — in one page. No fluff. Delivered to your inbox instantly. Trusted by tradespeople across the US.
About the CDL Hazmat Endorsement Exam
The Hazmat endorsement is required for any CDL driver transporting hazardous materials as defined by FMCSA regulations. The written exam is administered at your state DMV and typically has 30 questions, with a passing score of 80%.
Unlike other CDL endorsements, Hazmat also requires a Transportation Security Administration (TSA) background check. You'll need to apply for this separately — it takes 2–4 weeks. Plan ahead if your employer needs you Hazmat-certified by a specific date.
The exam tests five main areas: Hazmat classes and placards, communication rules (shipping papers, labels, marking), loading/unloading, bulk packaging, and security plans. The cheat sheet covers the highest-frequency questions from all five areas.
Use the sheet
The sheet solves quick review. Practice solves DMV readiness.
The cheat sheet gives you the placards, papers, and high-frequency rules. Web practice shows whether you can answer state DMV-style questions before you spend time at the testing office.
Web access and native app purchases are separate. Use web first from this page.