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You must pass the CDL General Knowledge Exam and the CDL Pre-Trip Inspection Test before obtaining a Commercial Driver’s License (CDL). At that point, you can obtain a T Endorsement, which allows you to legally operate double or triple trailer combinations. So, how do you earn the T endorsement? The T Endorsement requires you to pass the Minnesota CDL Double and Triple Trailers Test, which is based on the most recent Minnesota CDL Manual. The official Minnesota Driver and Vehicle Services (DVS) exam consists of 20 multiple-choice questions, and you must correctly answer at least 16 questions (80%) to pass. If you fail, the Minnesota DVS requires a minimum one-business-day waiting period before retesting, and additional fees may apply after multiple attempts.
Our free Minnesota CDL Double and Triple Trailers Knowledge Practice Tests far surpass the standard study guides you can find elsewhere online. Designed to mirror the actual exam format, you’ll benefit from real-time feedback, hints, and AI-driven learning tools. All of these work to improve retention and help you pass on your first attempt. Questions are derived from the most recent Minnesota CDL Manual. They address coupling/uncoupling procedures, preventing rollovers and jackknifing, managing the “crack-the-whip” effect, adjusting following distances, and conducting trailer inspections.
M.S., Chief Educational Researcher (ACES member)
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Earning your T Endorsement is a substantial value-add to your CDL, as it opens access to potentially higher-paying jobs and more job opportunities. Minnesota is home to major logistics companies like FedEx Freight, YRC, and Old Dominion, and its central location and major interstates like I‑35 and I‑94 make it a busy area for freight transported by double trailers.
Most double and triple trailer combinations use air brakes, and the Air Brakes Knowledge Test must also be passed to legally drive with air brakes. Passing the Air Brakes Knowledge Test and a skills test in a vehicle with air brakes allows for the removal of any “L” or “Z” restriction from your CDL. Additional endorsements available include (N): Tank Vehicles, (H): Hazardous Materials, (X): Tank/Hazmat Combo, (P): Passenger Vehicles, and (S): School Bus. Each endorsement requires a knowledge test, and we have exactly what you need to prepare for those as well.
This Practice Test is one of two in our North Star State-specific Double and Triple Trailers series. Be sure to check out our full suite of practice materials for combination vehicles, air brakes restriction removal, and valuable endorsements!
Driver’s Ed is - nobody wants to set foot inside the DVS. 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 2026 MN 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 DVS.
