CDL DOUBLES TRIPLES PRACTICE TEST NEW MEXICO

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Safely pulling double and triple trailers requires knowledge and skill. If you want to pull double or triple trailers, you must add the Doubles/Triples (T) endorsement to your Class A CDL. The New Mexico doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The NM CDL doubles triples test covers the following sections of the New Mexico CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this NM CDL practice test now to prepare for the actual test!
1. Emergency brakes are:
required on all vehicles.
not required on doubles.
not required on buses.
2. If you hear a loud loud "bang" and the steering feels "heavy", you should:
hold the steering wheel firmly and stay off the brake.
pump the brakes until the vehicle has slowed down.
brake hard and pull off the road.
3. On front tires, tread should be at least:
4/16 inch
4/32 inch
2/32 inch
4. To know how much space you should keep in front of you:
estimate how many seconds it would take you to reach the vehicle ahead.
wait until the vehicle ahead of you passes a clear landmark, then count off the seconds until you reach the same spot.
estimate how many vehicle lengths there are between you and the vehicle ahead.
5. In your mirror, you see a car approaching from the rear. The next time you check your mirror, you don't see the car. If you wish to change lanes, you should:
ease into the other lane slowly so the other car can get out of the way.
assume the car left the roadway and change lanes as normal.
wait until you are sure the car isn't in your blind spot.
6. If your vehicle has air brakes, to check that air flows to all trailers:
go to the rear of the second trailer and open the emergency line shut-off.
pull gently on the trailer with the tractor.
watch each trailer’s air gauge for a drop of 25 psi.
7. To prevent rollover, you should:
put the lightest parts of the cargo under the heaviest parts.
keep the cargo as close to the ground as possible.
place the cargo near the rear of the trailer.
8. Weight that is loaded so there is a high center of gravity:
reduces the chance that the load will shift to the side or fall off.
makes a vehicle easier to handle.
causes greater chance of rollover.
9. You can release dolly brakes:
by closing the emergency line valve.
by opening the service line valve.
by opening the air tank petcock.
10. When driving in extremely hot weather, if the air pressure in the tires is too high, you should:
let air out of the tires to decrease pressure.
continue driving.
stop and remain stopped until the tires cool off.
 
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Frequently Asked Questions

If you are under 18, you must follow the Graduated Driver Licensing (GDL) Program. Here are the three phases of the program and the required age: 
  • For an instructional permit, you must be at least 15 years old.
  • For a provisional license, you must be 15 ½ years old and have held the permit for six months.
  • For a full license, you must hold the provisional license for 12 months.
If you are between 18 and 24, you can obtain your driver’s license (class D) after passing the required tests and completing the None for the Road - DWI Awareness Program.

You have the option of taking the MVD written test at a New Mexico Motor Vehicle Division (MVD) location or a contracted driver education provider. Contact your driving school or schedule an appointment online at a MVD branch, choosing the date and time that suits you best. It's important to note that appointments can be scheduled up to 30 days in advance.

Bring the following documents:
  • One proof of identification number (for REAL ID drivers' license).
  • One proof of identity and age.
  • Two proofs of New Mexico residency.
  • Proof of being enrolled in a state-approved driver education program (for minors).
  • Proof that you have completed the None for the Road course, a self-taught DWI course (if you are between 18 and 24 years old, or if you are 25 or above convicted of DUI). 
If you are under 18, you and your parent/guardian must sign the application at the MVD office.

The MVD written test in New Mexico is offered in various languages, including English, Spanish, Tagalog, Italian, German, French, Vietnamese, and Chinese. Although language options are provided, it is advisable to have a basic understanding of English since road signs are always in English.

To prepare for the MVD written test, read the New Mexico Driver's Handbook. Study road signs, parallel parking, turning, passing a vehicle, yielding the right of way, etc. Test your knowledge with our free practice tests or sign up for DMV Premium to access additional resources. Once you are satisfied with your score, you are ready for the exam.

The New Mexico MVD written test comprises 25 questions. It is designed to evaluate your knowledge of road rules, safe driving practices, and traffic signs. You should study the manual carefully to ensure your success on the first attempt.

You must answer at least 18 questions correctly, and you can miss up to 7 questions to pass the MVD written test. The minimum score required to succeed in the exam is 70%. Take your time during the exam to make sure you understand the questions well.

When holding an instructional permit in New Mexico, new drivers must be accompanied by an approved driving instructor seated beside them or by an adult who is 21 years or older with a driver's license for at least 3 years. Upon obtaining a provisional license, drivers can drive alone, except between midnight and 5 a.m., unless:
  • under the supervision of a driver aged 21 or older. 
  • for family or medical emergencies.
  • for work/school/religious activities.

In New Mexico, an instruction permit is valid for 4 years and can be renewed by the MVD. This ensures you have enough time to practice driving and fulfill the necessary requirements before the road test.
If you do not pass your MVD written test on the first attempt, you have the opportunity to retake the test on the same day. However, if you do not succeed on the second try, you have to wait one week before making another attempt. In the event of a third unsuccessful attempt, a waiting period of six months is required before you can retake the exam.

NM CDL Doubles Triples Test

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