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 | => | 13% |
| 80-89 | => | 14% |
| 70-79 | => | 8% |
| 60-69 | => | 18% |
| <60% | => | 47% |
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 2026), 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 January 2026. 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.
M.S., Chief Educational Researcher (ACES member)
Last verified for accuracy on
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.
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 2026 CA 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.
