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We bet we know why you’re here: You need to pass the official Combination Vehicles knowledge test on the theory of operating combination vehicles. You’ve been studying the official Connecticut Commercial Driver License Manual (Connecticut CDL Handbook 2026), especially Chapter 6 (Combination Vehicles), because you know the knowledge test is based on it. But after you looked at this official study guide, you felt you could use some more help to be sure of passing the knowledge test. Great! That’s just what we do. We’ve helped thousands of aspiring drivers pass their knowledge tests, and we can help you too.
This free Connecticut CDL Combination practice test is also based on the official manual and is up to date as of January, 2026. Practicing with it will reinforce your knowledge and identify topics you need to study further. Each of the 25 practice questions comes with a helpful hint and an explanation of the correct answer. The practice questions and answers on this test will assess your knowledge of such topics as safe driving techniques, combination braking systems, and coupling and uncoupling. We have other Combination practice tests too. Keep practicing with them until you’re ready to take the official Combination Vehicles knowledge test.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
Be advised that virtually all large semi-trucks and tractor-trailers are equipped with air brakes. Your Commercial Driver’s License (CDL) will prohibit you from operating vehicles equipped with air brakes until you pass the official Air Brakes knowledge test. Don’t worry; we have a number of Air Brakes practice tests you can use to prepare for that knowledge test as well.
With your Class A CDL in hand, you should be able to find plenty of work in Connecticut as a semi-truck driver. The agricultural sector depends on truckers to transport its products. Manufacturing, largely in defense and aerospace, is the state’s third-largest economic sector after finance, insurance, and real estate. These high-tech firms depend on truckers to deliver equipment and materials to them as well as transport their products.
The most important trucking route in Connecticut is Interstate 95, which runs along the coast between New York City and Rhode Island but is notorious for traffic jams during rush hours. Other important commercial routes include Interstate 84, which connects Hartford with Massachusetts and New York State; and Interstate 91, which connects New Haven to Hartford, continues into Massachusetts and Vermont, and then continues into Quebec as Autoroute 55.
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 CT 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.
