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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 New Mexico hazmat test consists of 30 questions. To pass, you must correctly answer at least 24 questions (80%). The NM CDL hazmat test covers the information found in the New Mexico 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 should you downshift automatic transmissions?
When you start to get drowsy.
When going down steep grades.
Watch your tachometer, and downshift when your engine reaches the top of the range.
2. When you're going uphill and a heavy load is slowing you down, you should:
shift into a lower gear.
pass another slow vehicle to gain speed.
stay in the left lane if you can.
3. You or your employer must call the National Response Center when any of the following occur as a direct result of a HazMat incident, EXCEPT:
a person is killed.
black ice makes the road look wet.
spillage occurs.
4. When it comes to hazardous materials transportation, the shipper:
takes the shipment from to its destination.
placards the vehicle when loading, if required.
must package, mark, and label the materials.
5. When you use your mirrors while driving on the road, you should:
check them quickly.
avoid checking them regularly.
only use the driver's side mirror.
6. A person attending a placarded parked vehicle:
must know what to do in emergencies.
must be in the vehicle, awake, or within 100 feet of the vehicle, and have the vehicle within clear view.
All of the above.
7. If your placarded trailer has dual tires, you should check the tires:
once every 100 miles.
once every 3 months.
at the start of each trip and every time you stop.
8. When driving in heavy traffic, the safest speed is:
slower than the other vehicles.
faster than the other vehicles.
the same speed as the other vehicles.
9. 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.
All of the above.
10. If you discover a cargo leak, you should call for help and:
try to identify the material by smell.
use shipping papers to identify the leaking material.
touch the leaking HazMat to identify the material.
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NM CDL Hazmat Test

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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