VT CDL Air Brakes “Endorsement” Practice Test 2 2025

The presence of an “L” restriction on your Vermont Commercial Driver’s License (CDL) adversely affects your ability to secure the best driving opportunities. With an “L” restriction, you will not be permitted to drive an air brake-equipped vehicle. Since most semi-trucks and full-size buses use air brakes, you will find it more difficult to gain employment with numerous transportation service providers, including Green Mountain Transit and Barrett Trucking. Air brakes are an important safety feature, allowing drivers to regulate their speed to safely navigate changing road conditions (e.g., icy roads, steep inclines, and heavily congested traffic). Vehicles carrying heavily weighted loads require extra braking force to slow down or come to a complete stop. An extensive knowledge of air brake operations gives you a great advantage in finding the jobs that will bring you the most satisfaction.

If you need some help grasping air brake operations, our Vermont DMV CDL air brake “endorsement” practice test will provide you with exceptional training. Removing the “L” restriction requires you to pass a skills test (including inspecting the air brakes) and an official Air Brakes Knowledge Test. You must correctly answer at least 80% of the 25 questions to receive a passing score and avoid a one-day waiting period to retest.

Our Vermont DMV air brake “endorsement” practice test strategically prepares you to exhibit the necessary skills for removing the “L” restriction from your CDL. The practice test uses 30 questions, similar to the ones on the official knowledge test, to evaluate your proficiency and direct you to the information you must study more. This strategy makes the most efficient use of your time and provides a blueprint for your success.

This Vermont DMV air brake “endorsement” practice test offers the most authoritative information to support the expansion of your air brake knowledge. The practice test is based on the most recent Vermont DMV CDL manual (Vermont CDL Handbook 2025) and is up to date as of September 2025. If you submit an incorrect answer, the practice test uses information from the CDL manual to provide a thorough explanation of the correct one.

While you might consider using more traditional study methods, you will find the practice test a superior method to prepare you for the challenges of the official knowledge test. Traditional study methods train you to memorize the answers to the questions but are not designed to help you fill your knowledge gaps. The practice test provides the information necessary to eliminate your misunderstandings, show you how to apply it to various driving scenarios, and increase your chances of passing the official knowledge test on your first attempt.

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