Free New Mexico CDL Air Brakes Practice Test 2022

Do you need an Air Brakes endorsement or an L endorsement for your commercial driving license? The New Mexico 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 New Mexico 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 NM CDL Test to get ready to pass the New Mexico CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2022 NM commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
NM CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
The air compressor stops pumping air at what psi?
2.
When inspecting air brakes:
3.
The safety valve discharges automatically at the pressure of:
4.
The reduced stopping power caused by overuse of the service brakes and excessive heat is called:
5.
A low pressure warning signal could be __________.
6.
All air brake equipped vehicles have:
7.
The ____ shows how much pressure is in the air tanks.
8.
While applying the brakes, what tells the driver how much air pressure is being used?
9.
In ideal conditions a truck or bus with air brakes going at 55 mph would require the stopping distance of how many feet?
10.
When the air system is low ________.
11.
The type of brakes that clamp the rotor between the brake shoes is:
12.
Air governor cut-out should be at around:
13.
Air braking takes more time than hydraulic braking because:
14.
Besides heat, another cause of brake fade is:
15.
The emergency spring brake release knob is:
16.
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:
17.
Repeatedly partially increasing and pressing the brake pedal may result in:
18.
How should the air leakage rate be tested?
19.
On newer vehicles what color is the parking brake knob?
20.
Why should you drain water from compressed air tanks?
21.
During a normal drive, the spring brakes are held back by _____.
22.
The spring brakes of a tractor will come on when the air pressure falls within _______.
23.
To avoid damaging the brakes, what should you never do while the spring brakes are applied?
24.
What is the purpose of an air storage tank?
25.
Water and oil _______.