CDL DOUBLES TRIPLES PRACTICE TEST NORTH DAKOTA

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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 North Dakota doubles triples test consists of 20 questions. To pass, you must correctly answer at least 16 questions (80%). The ND CDL doubles triples test covers the following sections of the North Dakota CDL Manual: Driving Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Combination Vehicles, Doubles and Triples. Take this ND CDL practice test now to prepare for the actual test! Important: Triple trailers are not legal in North Dakota.
1. On front tires, tread should be at least:
1/16 inch
4/32 inch
4/16 inch
2/32 inch
2. Which of the following is most likely to roll over?
The rear trailer of a triple
The front trailer of a double
The middle trailer of a triple
The rear trailer of a double
3. In a dual air brake system, if one air system is very low on pressure:
you should pump the brakes to restore pressure.
you should drive and brake as you always have.
either the front or rear brakes will not be operating fully.
the effect won't be noticeable for the first 50 miles.
4. To prevent rollover, you should do all of the following except:
keep the load centered on your rig.
drive slowly around turns.
avoid quick lane changes.
put the lightest parts of the cargo under the heaviest parts.
5. When approaching a double railroad track, you should:
remember that a train on one track may hide a train on the other track.
remember that trains may be more frequent.
rely upon the presence of warning signals.
expect to hear a train when it's approaching.
6. Before operating the vehicle, the driver should:
rely on the last vehicle inspection and skip the pre-trip inspection.
should not review the vehicle inspection report and immediately try to find any vehicle defects.
review the last vehicle inspection report.
None of the above.
7. With an engine fire, you should:
turn the engine off as soon as possible.
open the hood as soon as possible.
not shoot foam from the vehicle’s underside.
All of the above.
8. Longer combination vehicles have the tendency to swing wide on turns. This is called:
rollover.
off-tracking.
jackknifing.
hydroplaning.
9. What factors can cause brakes to fade?
Slippery surfaces and shaded areas.
Gravel and tar.
Dirt roads and in unpaved yards.
Excessive heat and brakes out of adjustment.
10. If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.
5, 50 and 500 feet
3, 15 and 45 feet
5, 25 and 50 feet
10, 100 and 200 feet
 
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Frequently Asked Questions

In North Dakota, teens must follow the three steps of the Graduated Licensing Program to obtain a class D driver license:
  1. For a learner’s permit, you must be at least 14 years old.
  2. For an intermediate license, you must either hold the permit for one year or be 16 years old and have held the permit for at least six months.
  3. For a standard license, you must be at least 16 years old and complete a road test.

You can visit a North Dakota driver license office or take the DMV written test at home using KnowTo Drive, the official knowledge testing platform. For this second option, if you are under 18, you must be supervised by a parent/legal guardian with a valid driver's license. After passing the exam, you are still required to visit the DOT to validate your identity and complete the testing process. 

You'll need to bring the following documents:
  • Completed application (if you are under 18, a parent/legal guardian must sign your application and assume financial liability).
  • Proof of identification (if your name has changed, please provide proof of your current legal name).
  • Proof of Social Security Number.
  • Proof of North Dakota residence (two documents).
Use this checklist to ensure you have all the required documents before your appointment.


You can take the DMV written test in Arabic, Chinese, English, French, Nepali, Russian, Serbo-Croatian, Spanish, Somali, Swahili, Turkish, Vietnamese, Pashto, and Dari. Additionally, automated American Sign Language and audio testing are provided at the following offices: Fargo, Jamestown, Bismarck, Dickinson, Williston, Minot, Devils Lake, and Grand Forks.

To prepare for the DMV written test, you can refer to the official North Dakota Driver's Handbook. The manual covers various information about road signs, parallel parking, turning, passing a vehicle, yielding the right of way, etc. Study carefully the different sections and test your knowledge with our free practice tests!

The DMV written test has 25 questions, and you have 60 minutes to answer them. The questions cover different topics about road rules and safe driving practices. 

You are allowed up to 5 wrong answers. This means that the passing score is 80%. It's important to stay focused during the exam and take the time to read the questions carefully to minimize errors and pass the DMV written test on the first attempt.

For new drivers in North Dakota, various restrictions apply:
  • With a learner's permit, you must drive under the supervision of a parent/guardian or an adult aged 18 or older who has a minimum of three years of driving experience, seated beside you.
  • With an intermediate license, if you are under 16, you can drive alone except between sunset or 9 p.m. and 5 a.m. or for work, school, and religious activities.

Additionally, all drivers under 21 are considered legally under the influence of alcohol if their blood alcohol content (BAC) is .02 or greater. For those under 18, using cell phones while driving is forbidden except during emergencies.

You must wait 24 hours before retaking the DMV written test after a failure. You have 5 attempts within a year, but each time you need to pay another fee. If you leave the testing area early before completing the exam or if you bring cell phones or electronic devices, you may be disqualified. Additionally, attempting to cheat during an online test will result in automatic failure.

ND CDL Doubles Triples Test

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