CDL DOUBLES TRIPLES PRACTICE TEST MONTANA

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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 Montana doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The MT CDL doubles triples test covers the following sections of the Montana CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this MT CDL practice test now to prepare for the actual test! Important: Triple trailers are not legal in Montana.
1. Which of the following road surfaces freezes first?
Bridges
Underpasses
Parkings
Open roads
2. What should you do if you doubt you have safe space to pass under a low bridge?
Increase the weight of your vehicle to clearing under the bridge.
Assume that the height posted at the bridges is correct.
Go slowly, and take another route if you are not sure you can make it.
If no warnings are posted, assume there is enough clearance under the bridge and proceed slowly.
3. Empty trucks:
may have poor traction.
have better traction than fully-loaded trucks.
require shorter stopping distances than fully-loaded trucks.
None of the above.
4. When coupling a double or triple, ________ should be attached last.
the middle trailer.
the more heavily loaded trailer.
the trailer right behind the cab.
None of the above.
5. Air tank drains:
protect the tanks and the rest of the system from too much pressure.
are used to move air to the brakes.
should not be used in wet weather.
are used to remove water and oil from the air tanks.
6. If your brakes fail on a steep mountain downgrade, you should:
leave the road immediately.
change lanes after making sure there is enough room.
go right if the shoulder is clear.
use an escape ramp if it is available.
7. What can cause poor traction?
Too much weight on the steering axle.
Overloading the truck.
Too little weight on the driving axles.
All of the above.
8. You have two tie-downs on a 15 foot load. How many more tie-downs do you need to secure cargo and keep it from shifting or falling?
None
Two
Three
One
9. Your vehicle should be equipped with all of the following except:
Warning devices for parked vehicles
Spare electrical fuses
Fire extinguisher
Instructions on how to perform a vehicle inspection test
10. In a dual air brake system, if one air system is very low on pressure:
you should pump the brakes to restore pressure.
either the front or rear brakes will not be operating fully.
you should drive and brake as you always have.
the effect won't be noticeable for the first 50 miles.
 
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Frequently Asked Questions

The age requirements to obtain a class D driver's license in Montana are established by the three-steps of the Graduated Driver License program:

Step 1 - Non-commercial learner permit (NCLP)
  • If you are 14 ½ years old and enrolled in a state-approved traffic education program, you can apply for a Driver Ed Learning Permit.
  • If you have not attended driver training, you can apply for the instruction permit at 15 years old.
Step 2 - First-year restricted license
  • You must be 15 and have completed an approved traffic education program, or you must be 16 years old to get a restricted license.
Step 3 - Full privilege driver license 
  • After one year or when turning 18, whichever comes first, you can obtain a full driver's license.


You can schedule the DMV written test at any Montana driver license office. Find the nearest office and make an appointment, specifying that it is for a written test. Alternatively, appointments can be arranged by calling the Customer Care Center during regular business hours. 
On the day of your appointment, ensure you bring these documents: 
  • Two proofs of identity (either two primary documents, or one primary and one secondary document).
  • Proof of residency.
  • Proof of authorized presence in the U.S.
  • Parental consent (if you are under 18).

Proof of your Social Security Number is not required, but you should know it as it may be verified during your appointment.

You need to read the Montana Driver's Handbook. The exam covers various topics, including road signs, parallel parking, turning, passing a vehicle, yielding the right of way, etc. Remember that you cannot use driver's manuals or personal notes, so study the manual carefully and use our free practice tests.

For new drivers in Montana, restrictions vary.

With a learner permit:
  • You may drive only under the supervision of a licensed parent/guardian or adult.
  • Seatbelts are mandatory for both the driver and passenger.
  • A clean record for six months is required to apply for a restricted license.

With a first-year restricted license:
  • Sealbelts are mandatory for all occupants.
  • You cannot drive alone between 11:00 p.m. and 5:00 a.m., except for emergencies, farm-related activities, school/church/work activities, and specific parent-authorized purposes.
  • You can transport only one passenger under 18 for the first six months, except for family members. After six months, a maximum of three passengers is allowed unless accompanied by a licensed driver who is 18 or older.

Your permit is valid for one year. This ensures you have enough time to practice driving and fulfill the necessary requirements before the road test.

You can take the DMV written test only once per day. If you are under 18, you must wait one week before another attempt, while if you are over 18, you may return the next business day. If you find the exam difficult, sign up for DMV Premium, which offers numerous resources and practice tests to improve your preparation.

MT CDL Doubles Triples Test

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