New Jersey Hazardous Materials (H) Practice Test

The endorsement for hauling placarded hazardous materials — and the hardest knowledge test most drivers ever take, because it's built on tables: hazard classes, the placarding rules, the segregation chart for what can't ride together, and shipping-paper requirements. It's also the only endorsement wrapped in federal security requirements — a TSA security threat assessment with fingerprinting comes before the state will issue it, and the endorsement must be renewed on a cycle rather than earned once. The pay bump exists precisely because the barrier is real.

Who needs it: Drivers hauling placarded loads — tankers of fuel, chemicals, compressed gases. Required before the H prints on the license.

Sample practice questions

The hazmat basic description must appear in which order?

Answer: ID number, proper shipping name, hazard class, packing group — ISHP: Identification number, proper Shipping name, Hazard class, Packing group.

Earning BOTH the H and the N endorsements gives you which combined endorsement?

Answer: X — H (Hazmat) plus N (Tanker) equals the combined X endorsement, needed to haul hazmat in a cargo tank.

Compared with a dry van, a loaded cargo tank is more likely to roll over mainly because of its:

Answer: High center of gravity — Tanks carry much of their weight high above the road, making the vehicle top-heavy and prone to rollover in curves.

Common mistakes on the HazMat test

  • Trying to memorize the whole segregation table instead of the handful of pairings the test actually probes
  • Confusing when placards are required by ANY amount versus the 1,001-lb table threshold
  • Forgetting the shipping-paper rules — within reach, visible, and where they ride when you leave the cab
  • Not budgeting for the TSA screening timeline — the knowledge test is one step, the background check is its own clock

Studying with the full Truckcess course does double duty: the theory counts toward the federal ELDT requirement (Truckcess is listed on the FMCSA Training Provider Registry).

Official source: New Jersey Motor Vehicle Commission

CDL licensing in New Jersey is administered by the New Jersey Motor Vehicle Commission. Fees, scheduling, forms, and the official New Jersey CDL manual live on the official site: NJ MVC — official CDL page (verified 2026-08-09).

Truckcess is not affiliated with or endorsed by the New Jersey Motor Vehicle Commission. Our practice tests cover the federal CDL knowledge standards (49 CFR Part 383) that every state exam is built on; exact question counts, fees, and procedures vary by state and change over time — the official site is always the authority.

More New Jersey practice tests

Full prep courses are one-time from $59 with 12 months of access — mytruckcess.com/cdl.

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