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CDL COMBINATION PRACTICE TEST NEW MEXICO

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Drivers who want to drive combination vehicles must pass the combination vehicles test. The New Mexico CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the New Mexico CDL Manual. Take this practice test now to prepare for the actual NM CDL combination test!
1. Which of the following is NOT a way to determine if your trailer is equipped with ABS (antilock braking system)?
The letters "ABS" are printed on the side of the steering wheel.
It was built after March 1, 1998.
It has yellow ABS malfunction lamps.
2. If your vehicle is equipped with air brakes, loss of air pressure in the emergency line causes:
the trailer spring brakes to come on.
the speed of your vehicle to increase.
the trailer emergency brakes to come on.
3. Loose cargo:
can be a danger to others and yourself.
could hurt or kill you during a quick stop.
All of the above.
4. If your vehicle thumps or vibrates heavily, it may be a sign that:
you need to shift up.
one of the tires has gone flat.
the brakes have failed.
5. When transporting cargo, cargo securement must be checked within the first _____ miles of a trip and every _____ miles after.
50; 250
50; 150
100; 150
6. When driving a combination vehicle, which of the following 2 things will help you prevent a rollover?
Keeping cargo near the center of the vehicle and driving slowly on turns.
Keeping cargo near the center of the vehicle and driving slowly on the highway.
Keeping the cargo near the ground and driving slowly around turns.
7. When you inspect the coupling, make sure there is ______ between the upper and lower fifth wheel.
no space
about 1 inch
about 1/2 inch
8. If your brakes get wet, it can cause them:
to apply unevenly.
to be weak.
All of the above.
9. If you will be transporting hazardous materials that require placards, you must:
obtain a special transit permit.
obtain a hazardous materials endorsement.
transport the materials at night only.
10. The trailer hand valve should:
be used in driving.
never be used to test the trailer brakes.
never be used for parking.
 
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NM CDL Combination Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
Number of questions: 20
Correct answers to pass:16
Passing score:80%
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