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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 Oregon hazmat test consists of 30 questions. To pass, you must correctly answer at least 24 questions (80%). The OR CDL hazmat test covers the information found in the Oregon 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. When stopping you should push the brake pedal down:
as hard as you can.
2. If you are driving on a slippery road, you should:
decrease your following distance.
apply the brakes during turns.
adjust your speed to conditions.
use ABS to improve traction.
3. Most heavy-duty vehicles use:
solid brakes.
air brakes.
hydraulic brakes.
pressure brakes.
4. If you're carrying hazardous materials and are stopped at a truck stop, you should:
tuck the shipping papers under your windshield wiper.
keep the shipping papers with you.
leave the shipping papers on the dashboard in clear view.
leave the shipping papers in the driver’s door pouch or on the driver’s seat.
5. When going down grades, you should:
put the transmission in Neutral.
downshift to a lower gear.
shift up.
rely solely on engine braking to reduce your speed.
6. ________ display the ID number of their contents on placards or orange panels.
The gas tank and other bulk packaging
Cargo tanks and the CDL license
Cargo tanks and other bulk packaging
The back of the truck and the gas tank
7. When you discover a fire, if the trailer doors are hot you should not open them because:
you should use the fire extinguisher on the door.
opening the doors lets air in and may make the fire flare up.
the temperature of the trailer should not be changed in any way.
with air many fires do less damage.
8. If hazardous materials are spilling from your vehicle, do not move it:
any more than safety requires.
any more than 500 feet.
any more than 400 feet.
unless you are instructed to do so by a law enforcement officer.
9. Hazardous materials may be transported:
by any driver with a CDL license.
by a CDL holder with a tank vehicles endorsement.
by any driver with a Certification of Driving Experience.
by a CDL holder with a HazMat endorsement.
10. Hazardous materials can be recognized by looking at the container's:
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Hazmat CDL Test (OR)

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