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There are lots of opportunities in Arizona once you’ve obtained your Class A Commercial Driver’s License (CDL). To legally operate tractor-trailers and other combination vehicles, you must pass the Combination Vehicles Knowledge Test as well as complete Entry-Level Driver Training (ELDT) and pass a skills test in a combination vehicle.
The Arizona CDL Knowledge Test consists of 20 multiple-choice questions, of which at least 80% (16 out of 20) must be answered correctly to pass. If you fail, you must wait until the next business day and may have to pay a retesting fee. Topics on the test include preventing trailer skids and jackknives, safe braking practices with air brake systems, proper coupling/uncoupling steps, and proper inspection of tractor-trailers. That’s a lot of material and a small margin for error. As such, our experts have created a series of Combination Vehicle Practice Tests to help you pass on your first attempt!
Our Arizona CDL Combination Practice Tests are based on the most recent Arizona CDL Manual, which serves as the primary source for the exam (Arizona CDL Handbook 2025). Our practice tests provide instant feedback and hints to reinforce learning and avoid unnecessary information often found in other resources. We cut right to the chase, covering material most likely to be on the official test. Once you’ve aced this practice test, check out another one here: https://driving-tests.org/arizona/az-cdl-combination-test/.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
A Class A CDL in Arizona significantly boosts your opportunities in multiple industries, including Agriculture & Livestock Transport (key to Arizona’s rural economy), Construction & Heavy Equipment Hauling, Long-Haul Freight and Logistics (with carriers like Swift Transportation headquartered in Phoenix). Each of these relies on combination-vehicle drivers for their transport needs.
Arizona’s trucking corridors include I-10 and I-40 (connecting California to Texas and New Mexico), I-17 (linking Phoenix and Flagstaff), and US-93 (heading toward Las Vegas and beyond). Major employers that require Class A drivers along these routes include Knight-Swift Transportation, United Rentals, C.R. England, Albertson’s, and Solar Transport. There are simply too many opportunities to ignore!
Also, since most Arizona tractor-trailers use air brakes, you must pass the Air Brakes Knowledge Test. Without it, your CDL will carry a restriction prohibiting you from driving vehicles with air brakes, which are essentially most of the line of combination vehicles. Check out our Air Brakes Practice Tests here: https://driving-tests.org/arizona/az-cdl-air-brake-practice-test/.
Driver’s Ed is - nobody wants to set foot inside the MVD. 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 AZ 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 MVD.
