Based on 2024 NM CDL manual

Questions
25
Mistakes allowed
5
Passing score
80%
Official NM Air Brakes: What to Expect
25
Total number of questions

20
Number of questions required to pass

80
Percentage required to pass

New Mexico Commercial Driver's License
New Mexico Commercial Driver's License

Eager to earn your New Mexico air brakes endorsement? To ensure your preparedness for the exam, take our free New Mexico CDL Air Brakes Practice Test. CDL licenses carry a restriction until the air brakes endorsement is earned. When you pass that test you will be eligible to drive commercial vehicles with air brakes, which will expand the jobs you qualify for and possibly increase your income. Our practice test includes 25 multiple choice questions covering air brake inspections, air brake systems, dual air brake systems and more. Here are two examples of the types of questions you may find on our practice test: Is it mandatory that all vehicles with air brakes have a low air pressure warning signal? How do you check slack adjusters?

You will need to answer at least 20 of the questions correctly to pass. However, if you don’t pass, you can take the test an unlimited number of times to ensure you learn all of its content. We’ve even included answer explanations to help you better learn the correct information. Taking this practice test is a great way to gain experience answering questions in a similar format to the actual New Mexico Air Brakes test. Plus, this test is drawn from the same resource as the real test – the New Mexico CDL Handbook. To take your practice to the next level and help ensure you earn your air brakes endorsement on your first visit to the DMV, take this test now.