Based on 2024 NJ CDL manual

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

20
Number of questions required to pass

80
Percentage required to pass

New Jersey Commercial Driver's License
New Jersey Commercial Driver's License

Seeking to earn your air brakes endorsement? Don’t take the test without taking our New Jersey CDL Air Brakes Practice Test first! This practice test is drawn from the same resource (the New Jersey CDL Handbook) as the actual test and is formatted similarly as well. In other words, this is the perfect tool to prepare you to earn your air brakes endorsement, which is required for anyone driving a commercial truck with air brakes. In fact, commercial truck drivers’ CDLs automatically carry an air brakes restriction until they pass this endorsement test.

To help you get ready for the test, our practice test features 25 multiple choice questions. Each question has four possible answers and you must select the correct one. The questions cover how to use air brakes, how to inspect air brakes, the parts of an air brake system and dual air brake systems. Each question also has an answer explanation to help you understand why a particular answer is correct. What does the service brake system do exactly? How often should air tanks be drained? These are samples of the types of questions that you may find on the practice test. Don’t be surprised if your practice test questions are very similar to your actual test questions. Ready to start practicing for the air brakes test so that you can earn your endorsement when you make your journey to the DMV? Take our practice test now.