South Dakota CDL Class B Practice Test 2025

The official general knowledge exam consists of 50 multiple-choice questions on various aspects of commercial driving theory. Aspiring commercial drivers must answer them all before the timer runs out. A minimum score of 80% is required to pass, leaving little room for error. On exam day, many students go to the DMV location prepared but still fail due to the pressure. They experience negative emotions such as anxiety and nervousness, which eventually impact their performance on the test.

To combat this problem, we have created the South Dakota CDL Class B Practice Test. This intuitive tool closely reflects the content and format of the official general knowledge exam, helping students prepare in advance. All 50 questions are based on the official South Dakota Commercial Driver License Manual (South Dakota CDL Handbook 2025). This comprehensive resource describes the various aspects of commercial driving theory in detail, including safe driving practices, pre-trip inspections, and the air braking system.

“Officer Frank,” our automated assistant, will be present during your training sessions. This AI coach can provide insights and detailed explanations. Stuck on a difficult question? “Officer Frank” will nudge you in the right direction by supplying hints. (When you receive personalized help, it is easier to study and understand such a complex subject.) The questions you get wrong will be automatically added to your personal Challenge Bank™. We recommend visiting this section between your practice sessions to reinforce your knowledge and learn from your mistakes. Questions in your Challenge Bank will remain there until you answer them correctly.

For your convenience, we have omitted any timer from this practice test. Study without the pressure of a countdown and finish each training session at your own pace. Read every question twice and only select an answer when you’re confident of your choice. Please pay attention to the detailed explanation provided for each question and note it in a notebook or notebook app for future reference.

Becoming a successful commercial driver takes time and effort. Perseverance and consistency are essential throughout your learning phase, where you build the foundation for your dream career. Our South Dakota CDL Class B Practice Test can help you ace your theory exams on your first attempt, but you must stay consistent and practice daily.