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In the United States, there are three classes of Commercial Driver Licenses (CDLs): Class A, Class B, and Class C. A Class A CDL allows you to operate combination vehicles with a Gross Combination Weight Rating (GCWR) of over 26,000 pounds, in which the towed vehicle weighs more than 10,000 pounds. If you want to drive semi-trucks or tractor-trailers in your career, this is the class of CDL you want.
To obtain a CDL of any class, you must meet several requirements. You must first obtain a Commercial Learner’s Permit (CLP) so you can practice commercial driving until you become proficient at it. To become eligible for a CLP, you must complete a medical examination and pass the official General Knowledge test on general commercial driving theory. When you obtain your CLP, you can start practicing commercial driving. Once you believe you’ve sufficiently mastered it (but not before at least two weeks have elapsed), you can take the skills test to evaluate your commercial driving abilities, a necessary step toward obtaining a CDL.
However, depending on the class of CDL you’re applying for and the types of loads you plan to carry, you may have to pass other official knowledge tests as well. To operate combination vehicles, you’ll have to pass the official Combination Vehicles knowledge test.
M.S., Chief Educational Researcher (ACES member)
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This free Minnesota CDL Combination practice test is based on the official CDL manual (Minnesota CDL Handbook 2026), just like the official Combination Vehicles knowledge test. It is up to date as of January, 2026. There are 25 questions and answers on such topics as combination braking systems, combination driving techniques, coupling and uncoupling, and vehicle inspections. But unlike the official test questions, each practice question comes with a helpful hint and an explanation of the correct answer.
Once you’ve passed your tests and are holding a CDL of the appropriate class and the endorsements you want, you can take advantage of Minnesota’s various economic opportunities for truck drivers. The state has long been known for its agricultural sector (including sugar beets, corn, peas, soybeans, and logging) and its mining sector (chiefly iron ore). However, Minnesota’s economy has diversified into services and manufacturing (such as machinery and medical devices). Truckers deliver materials and equipment to these sectors as well as transport agricultural and manufactured products. Finally, the state’s proximity to Canada creates opportunities for truckers in cross-border trade.
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