# Free New York CDL Air Brakes Practice Test 2023

Do you need an Air Brakes endorsement or an L endorsement for your commercial driving license? The New York CDL Air Brake test has some differences from other endorsements because your license will receive a mark of restriction if you fail the test. So having good preparation before exam day is very necessary. To ensure that our questions are relevant, all of our CDL practice test packs are based on the NYC CDL Manual. Each question has a detailed explanation for you to thoroughly learn the format and the topic. Don't be afraid of having a restriction on your license. Let’s try our NY CDL Practice Test to get ready to pass the New York CDL Air Brake Test now.

Our CDL practice tests:
Based on 2021 NY commercial driver's license manual
Perfect for first-time, renewal applicants
NY CDL Air Brakes Test format:
25 questions
80% passing score
List of questions
1.
Your truck or bus has a dual air brake system. If a low-pressure warning comes on for only one system, what should you do?
2.
If you do not have automatic tank drains, how often should you drain the oil and water from the bottom of compressed air storage tanks?
3.
In case of a low air situation, the spring brakes should come on at:
4.
If your truck has a properly functioning dual air brake system and minimum size air tanks, the air pressure should build up from 85 to 100 psi within how many seconds?
5.
Total stopping distance for air brakes is longer than that for hydraulic brakes due to ______ distance.
6.
When the air system is low ________.
7.
To make sure that the spring brakes come on automatically, do all of the following except:
8.
In most newer vehicles, the parking brake control will be:
9.
When does the air compressor governor allow air to start pumping?
10.
When your brake's main air pressure is lost ________.
11.
It is not safe to drive a vehicle that has brake drums with cracks that are longer than _____ of the width of the friction area.
12.
What happens when your brake drums get very hot?
13.
In a dual air brake system, the first system, supplying the rear brakes, is commonly known as the "primary" system, and the other as the:
14.
Pressing and releasing the brake pedal unnecessarily:
15.
The use of brakes on a long and steep downgrade under normal conditions is only a supplement to:
16.
If you need to make an emergency stop, you should brake so that you can ________.
17.
The brake pedal in an air brake system _______.
18.
When driving an older vehicle that has a manual front brake limiting valve, drivers should:
19.