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.
To test air service brakes you should:
2.
The air compressor stops pumping air at what psi?
3.
What can legally hold a parking or emergency brake in position for a truck, truck tractor, or bus?
4.
When inspecting air brakes:
5.
An air compressor can be cooled by _______.
6.
A low pressure warning signal could be __________.
7.
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?
8.
Generally, air governor cut-in should be at:
9.
When you release the brakes and reduce the air pressure what makes up for that air loss?
10.
When using a vehicle with air brakes, the parking needs to be used _______.
11.
Some vehicles are equipped with a control allowing you to apply the spring brakes gradually, called a:
12.
If the low air warning comes on while you are driving, you should:
13.
Why is manually adjusting automatic slack adjusters dangerous?
14.
If you are driving down a steep downgrade and have reached your safe speed of 40 mph, you would apply the service brake until your speed dropped to ____ mph.
15.
Air braking takes more time than hydraulic braking because:
16.
Total stopping distance with air brakes is Perception distance + Braking Distance + Brake Lag Distance +:
17.
If air pressure is not built up within the correct amount of time, then:
18.
Average stopping distance under normal conditions at 55 mph is:
19.
In case of emergency stops, drivers should:
20.
Brake drums should not have cracks longer than what length?
21.
Why should you check the brake adjustment often?
22.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
23.
The belt of a belt-driven air compressor should be ________.
24.
During a normal drive, the spring brakes are held back by _____.
25.
You should use the parking brake _____________.