Quick note: This test is timed! You have N MINUTES to complete the test! All unanswered questions will be marked as incorrect. Good luck and godspeed!

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Will you need to pass the DMV CDL air brakes test as part of your commercial driver’s training? The chances are quite high, considering the Air Brakes endorsement resulting from successfully completion of this exam is a set-requirement for every Class A and Class B applicant! All Class A and Class B vehicles use air brakes, which means that any driver who intends to work with a combination truck, livestock transportation vehicle, tank-truck, box-truck, school bus or city bus must know how to operate them. The theory knowledge behind air brake operation is the primary focus of the South Carolina CDL air brake test. To get up-to-speed with this material quickly, you will need the L endorsement chapter of the permit book and the SC CDL practice test air brakes quiz which is accessible from this page.

Our air practice test SC quiz and the official DMV permit book make the perfect partnership, each taking care of a different aspect of your permit test preparation. Without either resource, your chances of passing the air brakes permit test first time would be considerably diminished! Reading the permit book will teach you all the details about air brake operation repair, maintenance, braking distances, components, air tank pressures, tank draining procedures and vehicle inspection that every Class B and Class A driver must know, while the SC CDL air brakes practice test we provide will train you to apply this knowledge successfully to real DMV test questions.

We are not exaggerating in saying the questions on this Class B and Class A practice test air brakes quiz are real, as our team have taken the time to extract many of them from genuine test papers that other Class B and Class A drivers have faced in the past. These questions are 100 percent authentic! Of course, we do design some of the questions used on the SC practice air test in-house, to ensure you are presented with content covering every vital topic in the Air Brakes section of the handbook. You can rest assured that every question we produce is designed using the same format as the real exam questions we use and quality-checked against information in the current edition of the study guide. Our own content is so realistic that you will not be able to tell it apart from the real exam extracts – these questions could easily appear on your actual Air Brakes endorsement test at the DMV office!

The South Carolina CDL general knowledge practice test found elsewhere on our website is also free to use and will help you prepare for the initial CDL general knowledge test, if you have not yet passed it. Once you have acquired passes on this exam and the Air Brakes endorsement test with assistance from this SC air practice test, you might consider advancing your driver’s permit to Class A by applying for a Combination Vehicles endorsement next. This can be achieved with the Combination Vehicles chapter of the permit test study guide and our Combination Vehicles Class A license SC practice test. Any commercial driving student who wishes to work with tanker vehicles, hazardous materials or passengers will then require further endorsements in addition to the mandatory class-specific qualifications mentioned on this page. Should any of these cargos relate to your chosen career, you will find all the free CDL practice tests needed to study for the necessary endorsements here on ePermitTest.com. Your success is important to us – we have your back every step of the way!