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CDL Hazmat Practice Test 2026: 50 Questions With Answers (H Endorsement)

Audio from the Open Exam Hub video of the same name; the video shows the numbers and practice questions on screen.

CDL hazmat practice test: 50 original H endorsement questions with answers and explanations, following the hazardous materials section of the CDL manual and the federal rules in 49 CFR: the intent of the rules, hazard classes and flash points, and the TSA check (8 questions); shipping papers, the basic description, emergency response phone numbers, the Hazardous Materials Table and placard Tables 1 and 2, including the 1,001 lb and DANGEROUS placard rules (14); loading and unloading, cargo tank attendance, the segregation table and bulk packaging (12); and railroad crossings, smoking and fueling, attending and parking distances, warning devices, leaks and incident reporting (16). As of October 2026: the H endorsement needs a state knowledge test, a TSA security threat assessment (fingerprints and background check; TSA lists $85.25 for new and renewing applicants) and, for first-time applicants, entry-level driver training before the knowledge test (49 CFR 383.71). Federal rules require 80% to pass each CDL knowledge test (49 CFR 383.135); question counts vary by state (Washington: 30 questions, 24 to pass). States must renew the H endorsement at least every 5 years (49 CFR 383.141). The section split and our 40-of-50 target are our own planning choices, not official weights or scores. Questions are original, not real test questions. Not affiliated with the FMCSA, PHMSA, TSA or any state licensing agency.

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Chapters
0:00 CDL hazmat practice test
2:30 Section 1: Rules, Hazard Classes and the H Endorsement: Questions 1 to 8
7:11 Section 2: Shipping Papers, Labels and Placards: Questions 9 to 22
15:07 Section 3: Loading, Segregation and Bulk Tanks: Questions 23 to 34
22:05 Section 4: Driving, Parking and Emergencies: Questions 35 to 50
30:47 Score yourself

Exam facts are from the official FMCSA and PHMSA rules (49 CFR) · TSA security threat assessment pages as of 2026-10-23. Fees and rules can change, so confirm on the official site before you enroll. Open Exam Hub is an independent study resource, not affiliated with the FMCSA, the TSA or any state licensing agency. Practice questions are not from a real exam. Narration is an AI-generated voice.

Music
"Fresh Air" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
creativecommons.org/licenses/by/4.0

"Carefree" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
creativecommons.org/licenses/by/4.0

"Reminiscing" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
creativecommons.org/licenses/by/4.0

"Friday Morning" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
creativecommons.org/licenses/by/4.0

Sound effects: Kenney (kenney.nl), CC0.

Images
tanker: "Ferric chloride Tanker" by Epolk, CC BY-SA 4.0, via Wikimedia Commons commons.wikimedia.org/wiki/File:Ferric_chloride_Tanker.jpg
placard: "Placard 1993" by Catherine C. Beaucham, Public domain, via Wikimedia Commons commons.wikimedia.org/wiki/File:Placard_1993.jpg
erg: "Emergency Response Guidebook - 2024 Cover" by United States Department of Transportation, Transport Canada, Secretariat of Communications and Transportation (Mexico), Public domain, via Wikimedia Commons commons.wikimedia.org/wiki/File:Emergency_Response_Guidebook_-_2024_Cover.png

#CDL #hazmat #truckdriver