Is the Hazmat Endorsement Hard? What Makes It Tough

For many drivers the hazmat endorsement is the hardest add-on. The written test has many tables and numbers, and the H endorsement also needs training, a TSA background check and fingerprints. Each step is doable, and you can plan for all of them.

This guide covers the whole process. For what is on the test itself, read our CDL hazmat test guide.

Why the test feels hard

Section 9 of the CDL manual covers hazard classes, shipping papers, placards, loading, parking and emergencies. Most of the trouble is volume, plus exact numbers.

Federal rules call the hazmat test "a knowledge test" (49 CFR 383.93(c)(4)). Your state sets the number of questions. The federal minimum passing score is 80 percent (49 CFR 383.135(a)(1)).

The placard tables are the best example. The 2026 manual says: "There are two placard tables, Table 1 and Table 2." Table 1 materials need a placard for any amount. For Table 2, the manual says: "Except for bulk packaging, the hazard classes in Table 2 need placards only if the total amount transported is 1,001 pounds or more including the package." The 2014 manual calls these Table A and Table B. Read the edition your state uses.

Our guide to whether the CDL written test is hard covers the other tests.

Every step for the H endorsement

Training comes first

For a first H endorsement, 49 CFR 380.609(b) says you must complete the related training from a provider on the Training Provider Registry. Appendix E to Part 380 says you must complete the hazmat curriculum to take your state's knowledge test for the H endorsement.

Section 380.603(b) says drivers who got an H endorsement before February 7, 2022 are not required to comply. Our ELDT guide explains the training rule.

The TSA check and fingerprints

The manual says that if you require a hazmat endorsement, you must submit your fingerprints and be subject to a background check. It says the check includes "a review of criminal, immigration and FBI records." If TSA finds you are a security threat, TSA notifies you and the state denies the endorsement.

TSA recommends that you enroll at least 60 days before you need an eligibility determination. It says some applications may take over 45 days. As of October 2026, TSA's page lists $85.25 for new and renewing applicants. It says the fee is non-refundable and valid for five years. Your state may have its own steps and fees, so ask your licensing agency.

The manual lists reasons for denial in Section 1. Do not guess about your own case. Ask TSA or your state licensing agency.

Renewal and transfer

At renewal, 49 CFR 383.141(d) says states must require H endorsements to be renewed every 5 years or less, with TSA screening each time. TSA says you submit new fingerprints.

The knowledge test comes back too. 49 CFR 383.73(d)(4) says that to retain an H endorsement at renewal, the state must require you to pass the test in 383.121. For a transfer to a new state, 383.73(c)(4) says the state must make sure you passed that test, or finished a third-party hazmat test or training the state accepts, within the 2 years before the transfer. Ask your state how it handles both.

How to study for it

Learn the placard tables first, because they carry the most numbers. Then work through shipping papers, loading and emergencies. Start the TSA application early, since the wait is not in your hands.

Try 10 exam-style questions built from the official CDL manual.

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