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CDL General Knowledge Practice Test -5

Pass your CDL General Knowledge Test with ease. Start here by taking this Free 25 question practice test, every question and answer is straight out of the Commercial Drivers License Handbook.
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CDL General Knowledge Practice Test

Don’t leave your CDL to chance—study with a free practice test to ace your CDL knowledge exam on the first try! Before earning your commercial driver’s license, all applicants must first pass a knowledge exam testing your comprehension of the traffic laws and safety measures that are critical to becoming a commercial driver. This test includes questions on state traffic laws, right of way procedures, maneuvering in a commercial vehicle, safety requirements and inspections, and more.

Taking this practice test gives you an extra layer of preparation, with multiple-choice questions that mimic the format and experience of taking the real exam. Your CDL general knowledge exam practice test includes 15 questions on information pulled from your state DMV’s CDL handbook. You must answer at least 12 questions correctly for a passing score of 80% or higher. The real advantage is your ability to retake this practice test as much as you need to feel completely confident before your CDL test. At the end, you’ll receive a review of any questions you missed, so you know exactly where to spend more time studying. There’s no better way to become a smarter, safer commercial driver.

CDL General Knowledge Practice Test FAQs:

How can I pass my general knowledge CDL exam?

To pass your general knowledge CDL exam, you’ll need to study your state DMV’s commercial driver handbook fully. Taking practice tests for your knowledge test and any additional endorsements you plan to apply for will also help ensure your pass your exam.

What questions are on the CDL knowledge test?

The CDL knowledge test features questions on driving your commercial vehicle, including safety components, inspections, and maneuvering larger vehicles. You’ll also be tested on the traffic laws in your state that pertain to commercial drivers, such as right-of-way rules, following distances, and more.

What tests are required to earn a commercial driver’s license?

To earn a CDL, you’ll need to pass the general knowledge exam, a behind-the-wheel road test, and a safety inspection test. You’ll also need to pass written and practical exams for any specific CDL endorsements you may be applying for, if any.

CDL Sample Test Questions

All drivers who need a CDL must take what test?
  • The general knowledge test.
  • Air brakes test.
  • Combination vehicles test.
  • Motorcycle skills test.
During the basic vehicle control portion of the skills test, you will be asked to __________.
  • Demonstrate your ability to drive your vehicle in a variety of traffic situations.
  • Move your vehicle forward, back and turn it within a defined area.
  • To fix your vehicle's engine.
  • Demonstrate that your vehicle is safe to drive.
If the oil pressure is low, dropping or fluctuating, you should _____.
  • Accelerate and reach your destination as quickly as possible.
  • Stop immediately.
  • Honk your horn to warn other drivers.
  • None of the listed answers.
If you operate a CDL required vehicle in interstate commercial, the vehicle needs to be registered under the ________.
  • International Registration Plan.
  • Intrastate Registration Procedure.
  • International Requirement Plan.
  • Interstate Registration Procedure.
It is illegal to operate a CMV if your blood alcohol concentration is above _____.
  • 0.02%
  • 0.01%
  • 0.04%
  • 0.03%
  • All of the listed answers.


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