Hazardous Materials practice test
The endorsement for hauling hazardous materials.
The Hazardous Materials endorsement ('H') allows a driver to transport materials the federal rules class as hazardous. It is the only endorsement that requires more than a knowledge test: a candidate must also pass a federal security threat assessment, which takes time and money, before the endorsement is issued. The test covers the knowledge the exam expects of a driver who will handle these materials — the basics of the hazard classes, the meaning of a placard in principle, the documents involved, the driver's responsibility for a load, and what to do in an emergency. It is exam-scope only: this site tests what the exam tests and stops there. It does not teach placard tables, segregation, or emergency response as something to act on, because those are operational and safety-critical. Every item here is written for this site, with its full explanation free.
Hazmat requires a federal security threat assessment that takes time and money before the endorsement is issued.
Hazardous Materials
This bank ships soon. The test covers the concepts in this page’s description, and your state’s manual is the thing to study.
These questions are written to the federal knowledge areas every state is required to test. They are not your state's questions — no free site has those. Your state writes its own test from its own CDL manual, and that manual is the thing to study.
All the tests
The requirement matrix on the home page computes which of the eight you need.
This site prepares for a written knowledge test. It is not driver training, it is not ELDT, and nothing on it substitutes for your state's CDL manual or a registered training provider. Air brake procedure, coupling, load securement and hazardous-materials handling are safety-critical, and this site never teaches them as something to do.