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Whether you’re looking for the distinct smell of the mountains or the sea salt scent of the coastline, you’ll find it in the terrain of North Carolina. Adding the Doubles and Triples Trailers endorsement to your North Carolina Commercial Driver’s License (CDL) is a must for adding credibility and an assortment of new options and income-producing marketability. The main requirement is passing a 20-question multiple-choice knowledge test. To pass, you’ll need a score of 80%, which means getting 16 correct answers. After you pass, you’ll receive the “T” endorsement on your CDL, authorizing you to pull two or three trailers (where allowed) (North Carolina CDL Handbook 2025).
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In the Tar Heel State, you need only be 18 years old to add this certification to your CDL (but you won’t be allowed to haul cargo across state lines until you turn 21). With a Doubles and Triples Trailers endorsement, though, you’re only allowed to pull double trailers in North Carolina. That said, double trailers are used throughout North Carolina for the transport of tobacco products, textiles and apparel, furniture and wood products, and agricultural products like sweet potatoes, corn, poultry, and hogs. Additionally, North Carolina has a growing sector of tech and biotech from the research triangle in Raleigh/Durham/Chapel Hill! This endorsement is the doorway to new opportunities. You may be asking yourself, “How can I best prepare for the test?”
Looking online will quickly become dizzying due to all the information available. What you need is a systematic, focused approach —and that’s precisely what our online North Carolina CDL Double/Triple Trailers practice test offers. Up to date as of December 2025, there are 20 multiple-choice questions that resemble what you will face at the DMV on test day!
If a Tar Heel misses a free throw, they know immediately what went wrong. They don’t have to wait until the review at the end of the game to learn. Our practice test works the same way, providing immediate feedback on each answer in real time. If you miss your shot, you’ll see right away why a different response is correct. Once you’ve studied, practiced with our free tests, and feel ready to roll (pun intended!), simply apply at the DMV, bring your documents, pay the fee, pass the test, and jumpstart your transport career.
Driver’s Ed is - nobody wants to set foot inside the DMV. 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 NC 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 DMV.
