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Based on official Idaho exam questions

Idaho CDL Class B Practice Test 2025

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements.

In Idaho, the DMV oversees the licensing process. Applicants for a Class B Commercial Driver’s License (CDL) must meet the eligibility requirements, score 80% or higher on the official general knowledge exam, complete Entry-Level Driver Training (ELDT), and pass the CDL skills tests. As you begin your learning phase, you should read the official Idaho Commercial Driver’s License Manual (Idaho CDL Handbook 2025). This resource is published by the Division of Motor Vehicles (DMV) and should not be missing from your toolkit. It teaches you the various aspects of commercial driving theory so you can prepare for your dream career.

Our Idaho CDL Class B Practice Test is available online, 24/7. This intuitive tool enables active learning, making it easier for you to prepare for the official general knowledge test. All 50 questions have multiple answer choices. However, only one answer is correct for each question, so please consider all options before you select an answer. Finish each practice session at your own pace without being pressured by a timer. If you make a mistake, we will immediately point it out so you won’t have to wait until the test ends to know what went wrong. A detailed explanation of the correct answer will explain why your choice was incorrect. For future reference, we recommend noting this feedback in a notebook or notebook app.

Students with auditory memory greatly benefit from using the voice-over function. Once activated, an artificial voice will read the questions and answer choices aloud. You can find this feature in the test settings menu, which can be opened by clicking the three dots in the top-right corner of the page. This menu also includes a slider for adjusting the font size, more features, and an option to switch between languages.

Start today and train with our Idaho CDL Class B Practice Test for several weeks. Do not expect overnight results, as your knowledge can only be improved gradually. Commercial driving theory might be a complex subject for some, but with the right tools, you can build a solid understanding of the material and feel confident on exam day.

9 min to complete
Available in EN and ES
ID commercial driver's license
Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives

Authored and curated by Steven Litvintchouk, M.S.

Chief Educational Researcher (ACES member)
Methodology & Editorial Policy
Last verified for accuracy: November 2025 (reviewed weekly)

What to expect on the actual ID permit test

50

questions

40

correct answers to pass

80%

passing score

We know what it takes to pass. And we’ve got the proof.

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.

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A Smarter Way to Study

Challenge Bank™

Our trademarked system automatically saves questions you miss, creating personalized tests that target your weak spots until you’ve mastered the material.

AI-Powered Feedback

Get smarter as you study. Our new AI-powered feedback provides detailed, question-level insights to help you understand the why behind each answer.

Interactive Handbook

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.

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