The Hazardous Materials endorsement
Five subjects, and a federal background check that takes longer than the studying.
Last verified 23 September 2026. Subject list from 49 CFR 383.121; pass mark from 383.135. The security threat assessment is required by 49 CFR 1572. Our practice tests for this line are on sale: General Knowledge is 5 credits, each endorsement is 1, and the learner permit tests are free. /cdl says what they are built from.
Start this one early
Hazmat is the only endorsement where the test is not the long pole. It carries a federal security threat assessment, with fingerprints, and that takes weeks rather than days. A candidate who studies first and applies afterwards has added the whole waiting period to the end of their timetable for no reason.
Five subject groups
49 CFR 383.121 sets them. Hazardous materials regulations. Hazardous materials handling. The operation of emergency equipment. Emergency response procedures. Operating practices and procedures.
It is a paperwork test, and that is not an insult
Most of the other endorsements are about how a vehicle behaves. This one is largely about what is written down: shipping papers, placards, labels, the table that says what may travel with what, and who is responsible for which part of it. The single most common shape of question is which party carries a particular duty, and the answers turn on the difference between the shipper, the carrier and the driver.
Emergency response is the other half
Two of the five groups cover equipment and response, and they are practical rather than clerical. What the driver does about a leak, what is in the emergency response information, when to keep away and what never to do to a fire in a placarded load.
It is the longest of our endorsement forms
Ours run thirty questions rather than twenty, because five subject groups covering a regulation this large cannot be sampled honestly in twenty. That is our decision about our own form. New York publishes no question count for the real test.
Passing it
Three choices a question and 80% to pass, the same as every other knowledge test.
Practice the real thing
Apply for the background check before you open a book, because that is the part with a queue in front of it. Our Hazmat forms run thirty questions rather than twenty for the reason above. On sale at 1 credit: the CDL page.
More on the New York CDL and permit
- Which New York CDL tests do you actually need?
- What is on the CDL General Knowledge test?
- The CDL Air Brakes test, and the restriction behind it
- The CDL Combination Vehicles test
- The Doubles and Triples endorsement test
- The Passenger Transport endorsement test
- The Tank Vehicles endorsement test
- The School Bus endorsement test
- The New York learner permit written test