View instructions
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. In combination vehicles with air brakes, the trailer air supply control:
is used to control the tractor protection valve.
is used to keep the trailer behind the tractor.
is a coupling devices used to connect the service and emergency air-lines from the tractor to the trailer.
2. What is the proper following distance for a 50 foot truck traveling at 50 mph?
5 seconds
25 seconds
6 seconds
3. In vehicles with air brakes, the tractor protection valve:
keeps air in the tractor or truck brake system.
provides the air pressure used to operate trailer brakes.
carries air, which is controlled by the trailer hand brake or the foot brake.
4. An item that is 15 feet long placed on a flatbed trailer should have at least:
3 tie-downs.
1 tie-down.
2 tie-downs.
5. If a load is 10 feet long, the minimum number of tie-downs required is:
6. If you must drive slowly, how should you alert following drivers?
Flash your brake lights
Use your emergency flashers if it is legal
Turn on your taillights
7. When you park trailers without spring brakes, you should use wheel chocks:
to prevent air from escaping.
to prevent the transmission from shifting up.
to keep the trailer from moving.
8. Headlights:
can blind other drivers.
should not be used when driving at night.
must be turned on a half hour before sunset to a half hour after sunrise.
9. Combination vehicles usually require _________ single commercial vehicles.
less driving skill than
more driving skill than
the same level of skill as
10. Which of the following is NOT a warning sign of fatigue?
Heavy eyelids
Driving at the speed of the traffic
Frequent blinking
Page 1 of 2
Next page

CDL Combination Test (NM)

Number of questions: 20
Correct answers to pass:16
Passing score:80%
Share This Online CDL Test
Rate this CDL Combination Test ()
4.6 out of 5
based on 365 votes