Free CDL Hazardous Materials Practice Test
The Hazmat endorsement test covers Section 9 of the CDL manual: hazard classes, shipping papers, labels and placards, the placard tables, loading and segregation rules, and what to do when you drive, park or have an emergency with hazardous materials.
30 Hazardous Materials questions with three answer choices, scored at the real 80% pass mark (24 correct), with an explanation from the CDL manual for every answer.
Or start with a free Hazardous Materials drillWhat is the highest total transport index allowed for all radioactive packages in a single vehicle?
CDL Hazardous Materials test at a glance
- Who takes it
- Drivers who will haul hazardous materials in placarded amounts. The H endorsement also needs a TSA security threat assessment.
- Passing score
- 80%
- Answer choices
- 3 per question
- Endorsement code
- H
Your state sets the number of questions from the federal question pool. Our full Hazardous Materials practice test has 30 questions, so you need 24 correct to reach 80%. 43 original Hazardous Materials questions rotate through it, so a second try is a different test.
What’s on the Hazardous Materials test
The test comes from Section 9 of the CDL manual. Our questions cover it in 3 topics, and your practice score report shows how you did in each one.
- Hazard classes, shipping papers and placards22 practice questions
- Loading, unloading and bulk packaging9 practice questions
- Driving, parking and emergencies12 practice questions
Take the full Hazardous Materials test
30 Hazardous Materials questions with three answer choices, scored at the real 80% pass mark (24 correct), with an explanation from the CDL manual for every answer.
Or start with a free Hazardous Materials drillFree Hazardous Materials practice drills
Ten questions with the explanation after each answer. Create a free account to save your results; each drill’s first attempt is free.
CDL Hazardous Materials questions
What do I need for a CDL hazmat endorsement?
Pass the Hazardous Materials knowledge test and the TSA security threat assessment. Since February 7, 2022, first-time applicants must also complete entry-level driver training theory before they take the hazmat knowledge test (49 CFR 383.71).
How much does the TSA hazmat background check cost?
TSA lists the hazmat endorsement threat assessment at $88.25, or $41 if you already hold a TWIC and your state accepts it. It is valid for five years.
Can I haul hazmat on a CDL permit?
No. A CLP holder may not operate a commercial vehicle transporting hazardous materials, and the H endorsement cannot be placed on a CLP (49 CFR 383.25).
Ready for the DMV?
30 Hazardous Materials questions with three answer choices, scored at the real 80% pass mark (24 correct), with an explanation from the CDL manual for every answer.
Or start with a free Hazardous Materials drillOther CDL practice tests
Questions are written from Section 9 of the model CDL manual; rules from the federal regulations, checked October 2026: Texas Commercial Motor Vehicle Drivers Handbook (DL-7C, AAMVA model CDL manual, revised March 2026) · 49 CFR 383.25 Commercial learner’s permit · 49 CFR 383.71 Driver application and certification procedures · 49 CFR 383.91 Commercial motor vehicle groups · 49 CFR 383.93 Endorsements · 49 CFR 383.133 Test methods · 49 CFR 383.135 Passing knowledge and skills tests · TSA Hazmat Endorsement Threat Assessment Program.
Original independent practice. Not affiliated with or endorsed by FMCSA, AAMVA or any state licensing agency.