CDL Hazmat Endorsement Practice Test 2026

The hazardous materials (H) endorsement is needed to drive any vehicle that must display placards. These questions cover the hazard classes, shipping papers, placarding, loading, driving and parking rules, and what to do in an emergency.

Vehículo comercial
Estados Unidos
90 preguntas
Revisado el 10 de octubre de 2026

Respuesta rápida

El examen oficial tiene 30 preguntas. Para aprobar: Varies by state; usually 30 questions, with 24 correct needed (80%). Lo organiza: Your state driver licensing agency, under federal rules set by FMCSA (49 CFR Part 383). Practica aquí gratis con 90 preguntas, cada una con la respuesta y una explicación. Contrastado con fuentes oficiales el 10 de octubre de 2026.

Lee antes de practicarEmpieza por CDL Hazmat Endorsement Study Guide: notas en lenguaje sencillo, diagramas y las cifras que hay que recordar.

Qué debes saber antes del examen

Federal rules set the passing score for every CDL knowledge test: you must answer at least 80% of the questions correctly.
The hazmat test has 30 questions in states such as Washington and Illinois, so you need 24 correct answers.
You need a TSA security threat assessment, with fingerprints, for the original hazmat endorsement and at each renewal.
For a first hazmat endorsement, you must finish entry-level driver training before you take the hazmat knowledge test.
You must pass the hazmat knowledge test again when you renew the endorsement.
A CLP holder may not drive a vehicle carrying hazardous materials, and a first DUI while hauling placarded hazmat brings a 3-year disqualification.

Preguntas frecuentes

How many questions are on the CDL hazmat test?

Each state sets the number, but Washington and Illinois both use 30 questions. You need 80%, or 24 correct.

What else do I need besides the test?

You need a TSA security threat assessment (a background check with fingerprints) and, for a first endorsement, entry-level driver training before the knowledge test.

When are placards required?

Table 1 materials, such as Division 1.1 explosives and poison gas, need placards in any amount. Table 2 materials in non-bulk packages need placards at 1,001 pounds or more in total.

Where do I keep hazmat shipping papers?

While driving, keep them within reach with your seat belt on or in the pouch on the driver's door. When you leave the cab, put them on the driver's seat or in the door pouch.

Do I have to retake the hazmat test to renew?

Yes. Drivers take the hazmat knowledge test again at renewal, and the TSA background check is repeated.

CDL Hazmat Endorsement Practice Test 2026

Respuesta rápida

Qué debes saber antes del examen

Preguntas frecuentes

Fuentes

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