AZ CDL Combination Vehicles Practice Test 3 2025

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/.

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/.