All your missed questions are saved
automatically for extra practice.
It's a practice test that's automatically made up of all your missed questions. Once you finish this test, you’ll be able to revisit your Challenge Bank™ to practice and sharpen your skills.
View All PlansAdding difficult questions to Challenge Bank™ is an exclusive Premium feature. Unlock access to 650+ exam-like questions, a Pass Guarantee, personalized study plans, and more.
View All Plans| 90-100 | => | 10% |
| 80-89 | => | 16% |
| 70-79 | => | 18% |
| 60-69 | => | 23% |
| <60% | => | 33% |
In the United States, there are three main classes of Commercial Driver’s Licenses (CDLs): Class A, Class B, and Class C. A Class A CDL allows you to operate a combination vehicle with a gross combination weight rating (GCWR) of 26,001 pounds or more, provided the towed vehicle(s) has a gross vehicle weight rating (GVWR) of more than 10,000 pounds. This class of CDL is typically for operating semi-trucks and tractor-trailers.
No matter which class of CDL you plan to get, you must meet a series of requirements. For one, you must pass an official skills test in a vehicle that is representative of the CDL class you’re applying for. The skills test includes basic vehicle maneuvers, a pre-trip inspection, and a road test. To be sure of passing the skills test, you must practice commercial driving under supervision until you’re proficient. And to be allowed to practice commercial driving, you must hold a Commercial Learner’s Permit (CLP).
To obtain a CLP, you must also meet certain requirements, including passing the official General Knowledge test on the basic theory of commercial driving. The questions on this test are based on the official Alabama Commercial Driver License Manual (Alabama CDL Handbook 2025).
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
To practice operating combination vehicles (as well as operate them for a living), you must also pass the official Combination Vehicles knowledge test to show that you understand the basic theory of operating combination vehicles. The Combination Vehicles knowledge test is also based on that same study guide. Hence, you should read the manual several times to learn as much as you can from it. But if you’ve found it tough to learn enough from the manual, you probably need some more help.
This free Alabama CDL Combination practice test is based on the official CDL manual, just like the official Combination Vehicles knowledge test. It’s up to date as of December, 2025. There are 25 multiple-choice questions and answers on such topics as combination braking systems, combination driving techniques, coupling, and pre-trip inspections. Our automated assistant can give you a hint if you get stuck or an explanation of the correct answer if you still miss the question. There’s no time limit; take all the time you need to learn and master the material covered by this practice test. Take the practice test as an open-book test if you wish. If you get stuck on a question, try to look up the correct answer in the CDL manual. You’ll learn more that way than by random guessing.
Be sure to try our other CDL Combination Vehicles practice tests too.
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 2025 AL 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.
