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View All PlansOregon CDL Class B Practice Test 2025
From the bustling streets of Portland to the winding mountain roads of the Cascades, Oregon’s roads present a unique challenge to new commercial drivers. Driving a commercial vehicle safely in this state requires more than basic driving skills. Those pursuing a Class B CDL (Commercial Driver’s License) must dedicate several weeks to complete the licensing process. The DMV oversees this process and requires all applicants to pass several exams, a vision screening, and a medical examination (unless they only plan to engage in excepted commerce).
The official general knowledge test consists of 50 multiple-choice questions that will evaluate your understanding of safe driving practices, rules of the road, the air braking system, and handling emergencies. This exam is based on the official Oregon Commercial Driver Manual (Oregon CDL Handbook 2025), which you should read at least once during your learning phase. Since most commercial vehicles in Oregon are equipped with air brakes, you must also pass the official air brakes knowledge test to legally operate them. Each exam must be passed with a minimum score of 80%.
Our Oregon CDL Class B Practice Test is designed to support students unfamiliar with commercial driving theory. You can use it to evaluate your knowledge before exam day or as an ongoing educational resource. Each mistake becomes a learning opportunity, allowing you to review and practice until you consistently achieve passing scores. The detailed explanations will help you understand the reasoning behind each correct answer. Pay attention to this feedback and note it in a notebook or notebook app.
Start today and dedicate the following days to studying the basics from the official commercial driver manual. Use our Oregon CDL Class B Practice Test to gradually improve your knowledge and prepare for your dream career. Keep track of your scores and watch your performance improve with each practice session. On exam day, you’ll go to the DMV location prepared and ready to ace your theory exams on your first attempt.
Verified for accuracy: October 2025
Reviewed by Steven Litvintchouk, M.S.
Chief Educational Researcher (ACES member)
Methodology & Editorial Policy
What to expect on the actual OR exam
questions
correct answers to pass
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