Free Pennsylvania CDL Air Brakes Practice Test 2022

Do you need a Pennsylvania Air Brakes endorsement or an L endorsement for your commercial driving license? The Pennsylvania 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 PA 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 Pennsylvania CDL Practice Test to get ready to pass the Pennsylvania CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2022 PA commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
PA CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
The most common type of foundation brakes are:
2.
The safety valve discharges automatically at the pressure of:
3.
"A slack adjuster’s free play needs to be adjusted if it is more than about ______ when you pull hard on it."
4.
The reduced stopping power caused by overuse of the service brakes and excessive heat is called:
5.
A dual air brake system ________.
6.
An air brake system is fully charged at what psi?
7.
What negatively affects the braking power of a spring brake?
8.
When increased application pressure to maintain the same speed becomes necessary, you should ______.
9.
When testing air leakage rates for single vehicles, initial loss rate should be less than:
10.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?
11.
In most newer vehicles, the parking brake control will be:
12.
Spring brakes will come on automatically, but the parking brake can also be applied:
13.
The parking brake knob is usually:
14.
If the spring brakes are on, when should you push the brake pedal?
15.
The safety valve reduces pressure at ___ psi.
16.
When brakes are applied, the brake shoes will press against the:
17.
The air compressor governor controls:
18.
The emergency spring brake release knob is:
19.
Under normal braking conditions, the vehicle:
20.
Why does a heavily loaded vehicle need a longer distance to stop?
21.
If one air system is very low on pressure _______.
22.
The spring brakes of a tractor will come on when the air pressure falls within _______.
23.
Required on all vehicles with air brakes, what tells the driver that air pressure is too low?
24.
Vehicles with air brakes have pressure gauges connected to the _______.
25.
If your brakes are wet, what should you do to dry them quicker?