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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 Massachusetts doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The MA CDL doubles triples test covers the following sections of the Massachusetts CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this MA CDL practice test now to prepare for the actual test!
1. Your vehicle has air brakes. To stop, you should:
push the brake pedal down.
pump the brake pedal 3 times.
release the accelerator, push in the clutch, and shift to Neutral at the same time.
pull the parking brake control knob out.
2. The center of gravity of a trailer should be:
as low as possible.
as high as possible.
at the rear of the trailer.
at the front of the trailer.
3. "Bobtail" tractors are:
tractors with two trailers.
heavily loaded trailers.
tractors without semitrailers.
tractors with a tank.
4. Under a pressurized system, the radiator cap:
should never be hot.
should never be removed until the system has cooled.
should be removed when the coolant is hot.
should always be cool.
5. Hanging meat in a refrigerated truck can be:
a very unstable load with a high center of gravity.
a very stable load if properly distributed.
a very stable load with a low center of gravity.
a very unstable load with a low center of gravity.
6. Regardless of its size, cargo should have at least ___ tie-downs.
4
3
1
2
7. When inspecting the coupling, how much space should there be between the upper and the lower fifth-wheel?
It depends on the load
It depends on the trailer
None.
½ inch
8. For safety during a trip, you should:
watch gauges for signs of trouble.
check critical items when you stop.
use your senses to check for problems.
All of the above.
9. If your vehicle has air brakes, to check that air flows to all trailers:
watch each trailer’s air gauge for a drop of 25 psi.
go to the rear of the second trailer and open the emergency line shut-off.
check that the fifth wheel is not so far forward that the tractor frame will hit the landing gear.
pull gently on the trailer with the tractor.
10. No matter how small the cargo is, it should have at least:
6 tie-downs.
2 tie-downs.
4 tie-downs.
1 tie-down.
 
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Frequently Asked Questions

To obtain a learner’s permit, you must be at least 16 years old. After holding your permit for six months with a clean driving record and completing a driver education program, you can apply for a junior operator license. Your class D driver’s license will be restricted until you reach 18 years old.
You can start your application online and you will receive an email to schedule an appointment at the Massachusetts Registry of Motor Vehicles (RMV) office you selected. If you prefer to complete the test at home, you are required to apply and visit a Service Center to provide identification documentation. Once the documentation has been verified, you'll receive login instructions to complete the test at home.
You are required to provide specific documents: 
  • Proof of identity.
  • Proof of Social Security Status.
  • Proof of Massachusetts residency.
  • Written consent from a parent/legal guardian (for applicants under 18).
Use this checklist and view the acceptable documents.


The RMV written test is provided in Albanian, Arabic, Armenian, Burmese, Cape Verdean Creole, English, Farsi, French, German, Greek, Gujarati, Haitian Creole, Hindi, Hungarian, Italian, Japanese, Khmer/Cambodian, Kiswahili, Korean, Laotian, Mandarin (Simplified), Mandarin (Traditional), Pashto, Polish, Portuguese, Russian, Serbo-Croatian, Somali, Spanish, Tagalog, Thai, Turkish, Ukrainian, Urdu, and Vietnamese. Audio exams are also available in these languages. If you need an oral exam, call 857-368-8105. 

You need to read the Massachusetts Driver's Handbook. The exam covers various topics, including road signs, safe driving practices, and road rules. Remember that you cannot use driver's manuals or personal notes, so study the manual carefully and take our free practice tests to verify your preparation.

The RMV written test consists of 25 multiple-choice questions. To pass, you must complete the test within 25 minutes. You have approximately one minute for each question, so carefully read each sentence before selecting your answer and moving on to the next question.

To pass the Massachusetts RMV written test, you need to reach a score of 72%. This means that you must correctly answer 18 questions and can miss a maximum of 7 questions. Sign up for DMV Premium to test your preparation and check if you are ready for the real exam.

All drivers under 18 are not permitted to use any mobile electronic device except for emergency calls. There are also other specific restrictions:
  • With a learner’s permit, you are allowed to drive only under the supervision of a licensed adult who is at least 21 years old, has held a driver's license for at least one year, and is seated beside you.
  • After obtaining a junior operator license, driving alone is permitted only between 12:30 a.m. and 5 a.m. Furthermore, you cannot transport passengers under 18 unless accompanied by a driver who is at least 21 years old and has held a driver's license for at least one year (except when transporting siblings).

A learner’s permit in Massachusetts is valid for 2 years. If it expires, you'll have to apply again and retake the exam. After holding the permit for 6 consecutive months, you can get a junior operator license. If there's any suspension during this period, you'll need to wait another 6 months after the suspension ends.
Instructions will be provided at the end of the RMV written test on how to retake it. Keep in mind that a new fee must be paid. It's important to note that cheating during the exam will result in failure. Additionally, if you are taking the test online, you'll automatically fail if you leave the browser, if you have not clicked a button for more than 2 minutes, or if you exceed the 25 minutes available to complete the exam.

MA CDL Doubles Triples Test

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