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Want to legally operate tractor-trailers and other combination vehicles in Mississippi? One of the requirements for obtaining a Class A Commercial Driver’s License (CDL) is passing the Combination Vehicles Knowledge Test. According to the Mississippi CDL Manual, the Class A License authorizes drivers to operate combination vehicles with a gross combination weight rating (GCWR) of 26,001 pounds or more, provided the towed unit exceeds 10,000 pounds.
Our expert-crafted Combination Vehicle Practice Tests are exactly what you need to pass the official Knowledge Test on your first attempt. But first, you should be aware of the other steps required. You must complete Entry-Level Driver Training (ELDT) through an FMCSA-approved provider. You must also pass the CDL General Knowledge Test, which will grant you a Commercial Learner’s Permit (CLP). You’ll need to hold that for at least 14 days before scheduling your hands-on CDL skills test, which must be taken in a combination vehicle. Once all of these requirements are passed successfully and you ace your Combination Vehicles Knowledge Test using our practice materials, you will be the proud new holder of a Class A CDL license.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
The Combination Vehicles Knowledge Test consists of 20 multiple-choice questions covering safe driving practices for combination vehicles, air brake operation in combination vehicles, coupling and uncoupling procedures, preventing skids and jackknives, and inspection procedures. You must correctly answer at least 16 questions (80%) to pass. If you fail, there is a minimum one-business-day waiting period and retest fee before trying again.
Our Free Mississippi CDL Combination Vehicles Practice Tests mimic the official state exam. They provide immediate feedback on all responses instead of waiting until the end to provide explanations. This method is scientifically proven to speed learning and retention. Check out another one here: https://driving-tests.org/mississippi/ms-cdl-combination-test/.
The Class A CDL is your ticket to opportunities in Mississippi’s top industries, including logistics, agriculture, energy, manufacturing, and construction. Companies like Cal-Maine Foods, Dollar General, Ergon, Inc., KLLM Transport Services, Pepsi Bottling Ventures, and Sanderson Farms employ Class A drivers to transport their goods throughout the state, including via Interstates 55, 20, and 10. There are many opportunities for Class A CDL licensed drivers.
Most combination vehicles use air brakes, so be sure to study for the Air Brakes Knowledge Test using our practice tests: https://driving-tests.org/mississippi/ms-cdl-air-brake-practice-test/. Also, check out our offering of endorsement practice tests like the Hazardous Materials (H) test: https://driving-tests.org/mississippi/ms-cdl-hazmat-practice-test/. Other state endorsement options include Tank Vehicles (N) and Doubles/Triples (T). Get started today!
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 2026 MS 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.
