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 driver must be able to see a low air pressure warning which comes on before pressure in the service air tanks fall below ____ psi.
2.
All air brake equipped vehicles have:
3.
Your truck or bus has a dual air brake system. If a low air pressure warning comes on for only one system, what should you do?
4.
The brake system that applies and releases the brakes when the driver uses the brake pedal is the ________ brake system.
5.
The application pressure gauge shows how much air pressure you:
6.
To stop the vehicle, air brakes systems use:
7.
Normally during anti-lock braking, the driver:
8.
When parking a vehicle with a modulating control valve ________.
9.
What is the purpose of an antilock braking system (ABS)?
10.
When your brake's main air pressure is lost ________.
11.
The safety valve is set automatically when pressure is:
12.
The level at which the air compressor stops pumping air is:
13.
If your vehicle has an alcohol evaporator, every day during cold weather you should:
14.
Repeatedly partially increasing and pressing the brake pedal may result in:
15.
In case of air pressure loss, a mechanical means of preventing the vehicle from moving is called:
16.
The brake pedal in an air brake system _______.
17.
The service brake system ________.
18.
How are brakes designed?
19.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
20.
Brake linings should not be _______.
21.
If air supply drops when driving, the tractor protection valve ________.
22.
Vehicles with air brakes _________.
23.
The parking brake should be used:
24.
A warning to drivers behind you that the air brakes have been applied is the:
25.
To prevent too much pressure from building up in the system, what is installed?