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Do you already hold a North Dakota Class A CDL? If so, you’re just one passed test away from unlocking an upgrade to your driving career with more specialized, higher-paying opportunities. Adding the Doubles/Triples (T) Endorsement to your license allows you to legally operate double and triple trailer combinations on North Dakota’s roadways. To get to that point, you must pass the North Dakota Doubles and Triples (T) Endorsement Knowledge Test.
Our North Dakota CDL Doubles and Triples (T) Endorsement Knowledge Practice Tests are designed by experts to mirror the official exam format and help you pass on the first try. With instant feedback, hints, and AI-enhanced learning tools, you’ll learn the material faster and retain it!
If you don’t pass the test, the North Dakota DOT requires you to wait at least one business day before retesting. After three failed attempts, additional fees kick in, so preparing with our practice tests the first time around saves you both time and money!
The official North Dakota exam contains 20 multiple-choice questions, and you must answer at least 16 correctly (80%) to pass. Just like the real exam, our practice test questions are based on the most up-to-date North Dakota CDL Manual, covering proper coupling and uncoupling of trailers, preventing rollovers and jackknifing, proper braking procedures for long combination vehicles, maintaining safe following distances, and inspection procedures specific to doubles and triples.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
From I-29 to I-94, North Dakota’s major freight routes connect Fargo, Bismarck, and Grand Forks. The need for drivers with a T Endorsement continues to grow. Major employers like FedEx Freight, UPS, and other regional carriers actively seek North Dakota drivers certified to haul longer combination vehicles.
Want to enhance your CDL even further? Consider endorsements for Tank Vehicles (N), Hazardous Materials (H), Passenger (P), School Bus (S), or the X Combo (Tank + Hazmat). Each of these endorsements increases your marketability (and your list of job prospects)! Furthermore, most double/triple trailer combinations are equipped with air brakes, so make sure you pass the Air Brakes Knowledge Test to lift any “L” or “Z” restrictions from your CDL. We’ve got you covered there as well with our North Dakota Air Brakes Practice Tests, designed to ensure your first-time success!
This practice test is Test 2 of our North Dakota CDL Doubles and Triples (T) Endorsement Knowledge Practice Test Series. Explore our full collection of endorsement-specific and air brake practice tests, each tailored to DOT standards!
Driver’s Ed is - nobody wants to set foot inside the DOT. That’s why millions of learners trust us for simple, visual, effective prep.
We are an officially recognized FMCSA Entry-Level Driver Training provider and a proud partner to over 2,500 libraries. We work with safety organizations like GHSA and the National Safety Council to help create safer roads for everyone.
Our trademarked system automatically saves questions you miss, creating personalized tests that target your weak spots until you’ve mastered the material.
Get smarter as you study. Our new AI-powered feedback provides detailed, question-level insights to help you understand the why behind each answer.
Go beyond the boring black-and-white manual. Our interactive handbook lets you read, listen with an MP3 audio version, or even chat with it to find the information you need, faster.
We build our practice questions from the current 2025 ND Driver Handbook and refine them using patterns recent test‑takers report.
Driver handbook • Knowledge‑test/permit overview • Fees & ID requirements • Office/appointment info
We mirror recurring themes (e.g., right‑of‑way traps, sign look‑alikes) and use similar distractors and wording styles.
We don’t collect or publish actual test items and we’re not affiliated with DOT.
