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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. Two of the most common causes of tire fires are:
Loose lug nuts and duals that touch.
Duals that touch and under-inflated tires.
Driver smoking and bleeding tar.
Over-inflated tires and duals that touch.
2. Which of the following is NOT a good rule for using turn signals?
Cancel your signal after you have turned
Cancel the signal before completing the turn
Signal early
Signal continuously
3. If you are driving a 40-foot vehicle at 35 mph, you should leave at least _____ between you and the vehicle ahead.
4 seconds
3 seconds
5 seconds
6 seconds
4. The only acceptable way to check tire pressure is to:
check the minimum tread depth.
use a tire pressure gauge.
push on the tire to feel the pressure.
None of the above.
5. A shipping paper for HazMat must include:
page numbers if the shipping paper has more than 1 page.
a shipper's certification signed by the shipper.
a proper shipping description for each HazMat.
All of the above.
6. With brake drums, if brakes become too hot:
the brakes may stop working.
the air compressor will kick on to cool the brakes.
the brakes will supply too much power to the drive wheels.
your ABS will malfunction.
7. A shipping paper for hazardous materials must include:
a shipper's certification, signed by the shipper, saying they prepared the shipment according to the regulations.
page numbers if the shipping paper has more than 1 page.
a proper shipping description for each hazardous material.
All of the above.
8. Which of the following may have reduced the clearances since the heights were posted at bridges and overpasses?
Repaving of the road
The weight of a cargo
9. The manifest for transporting hazardous wastes must be:
attached to the appropriate placard.
appear on both sides and ends of the vehicle.
signed by hand.
uploaded to the cloud.
10. For hazardous waste, shippers must keep a copy of shipping papers for _______  after the material is accepted by the initial carrier.
1 year
3 years
6 months
2 years
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OR CDL Hazmat Test

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