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View All PlansCalifornia CDL Class B Practice Test 2025
As a commercial driver in California, your shift will begin with a pre-trip inspection of your vehicle. You must take the time to walk around your vehicle and look for anything that could make it unsafe to operate. You will check the tires and all lights and signals, and ensure the mirrors and windshield are clean and undamaged. The Federal Motor Carrier Safety Administration (FMCSA) mandates pre-trip inspections to keep you and other drivers safe. You will find more information about pre-trip inspections in the California Commercial Driver Handbook (California CDL Handbook 2025), an official resource published by the DMV. You should read this manual multiple times during your learning phase, but other tools can help you master commercial driving theory more efficiently.
Our California CDL Class B Practice Test has been designed to closely reflect the content and format of the official general knowledge written exam. This intuitive tool is up to date as of October 2025. You will always practice with the latest version, but you should occasionally check the official CA DMV website for the most up-to-date information. You get unlimited attempts with our practice test, so you can train as often as your schedule allows. A minimum score of 80% is required to pass. However, you shouldn’t let a failed attempt discourage you.
Mistakes are common among beginners. Those unfamiliar with commercial driving theory should ignore their scores during their first few attempts. A detailed explanation is provided for each question, helping you understand the reasoning behind the correct answer. Please pay attention to this feedback and note it in a notebook or notebook app for future reference. For your convenience, we have also omitted any timer from this practice test. Read every question twice, only select an answer when you are confident of your choice, and finish each session at your own pace.
Your commercial driving journey starts here. Take the first step and begin your learning phase with the right tools. Train with our California CDL Class B Practice Test daily, and ace the official general knowledge exam 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 CA exam
questions
correct answers to pass
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