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 PlansIdaho CDL Class B Practice Test 2025
- Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
- Based on 2025 ID commercial driver's license manual
- Triple-checked for accuracy
- Updated for September 2025
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.
About this test

What to expect on the actual ID DMV exam
questions
correct answers to pass
passing score
Are you in another state?
- Alabama: Test 1 / Test 2
- Alaska: Test 1 / Test 2
- Arizona: Test 1 / Test 2
- Arkansas: Test 1 / Test 2
- California: Test 1 / Test 2
- Colorado: Test 1 / Test 2
- Connecticut: Test 1 / Test 2
- Delaware: Test 1 / Test 2
- District of Columbia: Test 1 / Test 2
- Florida: Test 1 / Test 2
- Georgia: Test 1 / Test 2
- Hawaii: Test 1 / Test 2
- Idaho: Test 1 / Test 2
- Illinois: Test 1 / Test 2
- Indiana: Test 1 / Test 2
- Iowa: Test 1 / Test 2
- Kansas: Test 1 / Test 2
- Kentucky: Test 1 / Test 2
- Louisiana: Test 1 / Test 2
- Maine: Test 1 / Test 2
- Maryland: Test 1 / Test 2
- Massachusetts: Test 1 / Test 2
- Michigan: Test 1 / Test 2
- Minnesota: Test 1 / Test 2
- Mississippi: Test 1 / Test 2
- Missouri: Test 1 / Test 2
- Montana: Test 1 / Test 2
- Nebraska: Test 1 / Test 2
- Nevada: Test 1 / Test 2
- New Hampshire: Test 1 / Test 2
- New Jersey: Test 1 / Test 2
- New Mexico: Test 1 / Test 2
- New York: Test 1 / Test 2
- North Carolina: Test 1 / Test 2
- North Dakota: Test 1 / Test 2
- Ohio: Test 1 / Test 2
- Oklahoma: Test 1 / Test 2
- Oregon: Test 1 / Test 2
- Pennsylvania: Test 1 / Test 2
- Rhode Island: Test 1 / Test 2
- South Carolina: Test 1 / Test 2
- South Dakota: Test 1 / Test 2
- Tennessee: Test 1 / Test 2
- Texas: Test 1 / Test 2
- Utah: Test 1 / Test 2
- Vermont: Test 1 / Test 2
- Virginia: Test 1 / Test 2
- Washington: Test 1 / Test 2
- West Virginia: Test 1 / Test 2
- Wisconsin: Test 1 / Test 2
- Wyoming: Test 1 / Test 2