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Any driver, regardless of the vehicle Class, who wants to haul hazardous materials, must add an “H” endorsement to their CDL. In order to obtain the Hazmat endorsement drivers are required to pass a Transportation Security Administration background check and a knowledge test. The Washington hazmat test consists of 30 questions. To pass, you must correctly answer at least 24 questions (80%). The WA CDL hazmat test covers the information found in the Washington CDL Manual. Study the chapter covering hazardous materials to learn how to recognize, handle, and transport Hazmat, then take this practice test to prepare for your exam!
1. Overloading can have negative effects on:
All of the above.
2. What should you do if your vehicle starts hydroplaning?
Release the accelerator and push in the clutch to let the wheels turn freely.
Apply the brakes and countersteer to regain control of the vehicle.
Accelerate slightly, then push in the clutch to slow down.
3. The power unit of placarded vehicles must have a fire extinguisher with a UL rating of _______ or more.
10 A:B
10 B:C
15 B:C
4. If you notice a cargo leak, you should identify the hazardous material leaking:
by touching the material.
by using the shipping papers.
by taste.
5. Two of the most common causes of tire fires are:
Driver smoking and bleeding tar.
Duals that touch and under-inflated tires.
Loose lug nuts and duals that touch.
6. If there is an "RQ" before or after the HEMS description on the shipping paper, it means that:
the material is in a package containing no other materials.
the carrier must report any spill of this material.
the material has a value of more $50,000.00.
7. When shippers package hazardous materials, they certify that the package has been prepared according to the rules. The only exceptions are when:
the sealed loads is provided by the carrier and the package cannot be inspected.
a shipper is a private carrier transporting hazardous waste.
a shipper is a private carrier transporting their own product, and when the package is provided by the carrier.
8. Some packages of ________ bear a "transport index", which tells the degree of control needed during transportation.
radioactive materials
corrosive liquids
9. You are transporting hazarous materials. During your en-route inspection, you find an overheated tire. What should you do?
wait at least 30 minutes before continuing your trip.
use water to cool the tire, then check it every 50 miles.
remove the tire and place it a safe distance from your vehicle.
10. An Anti-lock Braking System (ABS):
increases your normal braking capability.
lets you drive faster.
keeps your wheels from locking up when you brake hard.
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CDL Hazmat Test WA

Number of questions: 30
Correct answers to pass:24
Passing score:80%
Number of questions: 30
Correct answers to pass:24
Passing score:80%
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