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Based on official Delaware exam questions

DE CDL Air Brakes Practice Test 3 2025

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

Do you find the inner workings of air brakes too complicated to understand? It’s important for you to remove the air brakes restriction from your Delaware commercial driver’s license (CDL) to advance your professional driving career. Our practice test series can eliminate your confusion and lead you to an extensive knowledge of air brakes that qualifies you for more driving opportunities. You can use this third free Delaware DMV CDL Air Brakes practice test as a springboard to achieve your learning objectives. Without strategically designed training, expanding your driving skills may leave you feeling as though you’re floating without a rudder in the Broadkill River.

Our Delaware DMV CDL Air Brakes practice test directs you to the information that you need to develop a better understanding of these systems. Before you can remove the air brakes restriction from your CDL, you must pass an official Air Brakes knowledge test and an official skills test, demonstrating your ability to inspect and operate them. You must correctly answer at least 80% of the 25 questions on the official knowledge test to pass. Using the practice test, you can receive a real-time assessment of your current knowledge and reliable information to expand it. The practice test contains 30 questions resembling those on the official knowledge test, to establish a baseline of your remedial skills and develop a plan to enhance them.

While various on-line resources claim to have the ability to train you, this Delaware DMV CDL Air Brakes Practice Test consistently exceeds their results. This success rate is primarily due to the practice test being based on the most recent Delaware DMV CDL manual (Delaware CDL Handbook 2025) and up to date as of November 2025. The information provided is accurate and can be confidently applied to your driving practices. If you submit an incorrect answer, the practice test uses its interactive capability to supply you with a detailed explanation of the correct one. This interactive capability sets the practice test apart from traditional study methods, such as study guides. Beyond developing surface knowledge, you cannot rely on study guides to fully develop your understanding of air brake systems. Study guides merely train you to memorize the answers to a series of questions without helping you correct your misunderstandings. The practice test goes the extra mile to thoroughly explain the crucial information you struggle to understand and make it likely for you to pass the official knowledge test on your first try.

Middletown celebrates its economic progress at the Olde-Tyme Peach festival, and you can promote the development of your professional driving skills with the practice tests at https://driving-tests.org/delaware/de-cdl-practice-test/.

8 min to complete
Available in EN and ES
DE 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 DE permit test

25

questions

20

correct answers to pass

80%

passing score

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

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Interactive Handbook

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