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View All PlansIn South Dakota, all aspiring commercial drivers must complete the licensing process before they can get a Commercial Driver’s License (CDL). To legally operate combination vehicles (such as semi-trucks or 18-wheelers), you will need a Class A CDL. This type of license can be obtained by passing the official general knowledge exam as well as the official combination vehicles knowledge test. Additionally, you must also pass your CDL skills tests in a combination vehicle.
Our South Dakota CDL Combination Vehicles Practice Tests are designed to help you study efficiently. This particular practice test includes 25 multiple-choice questions based on Section 6 (Combination Vehicles) of the official South Dakota Commercial Driver License Manual (South Dakota CDL Handbook 2025). You can customize your testing experience with the features available in the test settings menu. This menu can be accessed by clicking the three dots in the top-right corner of the page.
The voice-over function, once activated, can significantly increase your focus. An artificial voice will read the questions and answer choices aloud, helping you eliminate distractions when studying in busy environments. If you have difficulty reading the small text, you can increase its size by using the slider from the test settings menu. Make the text bigger until it becomes easier to read and eliminate the risk of eye strain, which often occurs during longer study sessions.
Because commercial driving theory is a complex subject, it will take you several weeks to fully master it. That’s why we recommend studying at your own pace. Avoid rushing through your practice sessions, and please pay attention to the detailed explanations. They will help you understand the reasoning behind the correct answers, so you won’t just memorize the correct option.
Our Free South Dakota CDL Permit Practice Test can help you strengthen your knowledge as you prepare for the official general knowledge test. Use this tool alongside the official Commercial Driver License Manual to significantly boost your learning potential. Within a few weeks, you’ll be ready to ace your theory exams on your first attempt.
Chief Educational Researcher, Driving‑Tests.org (ACES member)
Verified for accuracy December 2025
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