This free CDL practice test will focus on 30 questions related to the Air Brake portion of the exam. For this you will need to know the parts of a single and dual air brake system, how to inspect and use them. Be sure to also take the General Knowledge and Combination Vehicle practice tests.
What is the Air Brake Endorsement?
The CDL air brake endorsement is an extra certification that allows you to operate vehicles equipped with air brakes. These brakes use compressed air to stop the vehicle, and they’re commonly found on large trucks and buses. To legally drive a vehicle with air brakes, you need this endorsement on your CDL (Commercial Driver’s License).
What's on the Air Brakes Endorsement test?
The air brakes test is a section of the CDL permit exam that specifically focuses on your knowledge of air brake systems. It includes questions about how air brakes work, how to inspect and maintain them, and how to use them effectively while driving. You’ll also learn about potential hazards and what to do in case of brake failure.
The number of questions on the air brakes test can vary by state, but it’s typically around 25 questions. These questions could be multiple-choice or true/false, and they’re designed to assess your understanding of air brake systems.
How hard is the Air Brakes Endorsement test?
The difficulty of the air brake endorsement test varies from person to person. If you’ve studied and prepared well, the test becomes much easier. The key is to understand the concepts behind air brakes, such as the role of air compressors, brake chambers, and the importance of regular maintenance.
Many people find the air brake section manageable with proper study and practice. There are plenty of resources available, including study guides, online practice tests, and even CDL training programs that offer hands-on experience with air brake systems.
