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.
When is it OK to leave your truck unattended without applying the parking brakes and choking the wheels?
2.
Modern air brakes combine three different systems. They are the service, the parking, and the _____ brakes.
3.
At 55 mph on dry pavement, the air brake lag distance is how many feet?
4.
The most important thing to do when a low air pressure warning comes on is:
5.
The 3 individual systems of the air brakes are the service brakes, emergency brake, and:
6.
The supply pressure gauge shows how much pressure:
7.
Spring brakes will generally come on at:
8.
With air brake vehicles, the parking brake should be used:
9.
To make sure that the spring brakes come on automatically, do all of the following except:
10.
If your truck or bus has dual parking control valves, you can use pressure from a separate tank to:
11.
What must the air pressure be, at minimum, in both parts of a dual air brake system?
12.
If the low air pressure warning light comes on, you should:
13.
The most common problem found in roadside inspections is:
14.
The use of brakes on a long and steep downgrade under normal conditions is only a supplement to:
15.
All of the following apply if the low air pressure warning signal does not work except:
16.
When inspecting the air brake system, what particular item in the engine compartment should the driver pay specific attention to?
17.
On newer vehicles what color is the parking brake knob?
18.
Automatic air tanks _______.
19.
The most common type of foundation brake is?
20.
Stop light switches are necessary because ________.
21.
How often should alcohol containers be checked during cold weather?
22.
What does the air compressor governor control?
23.
Vehicles with ABS have malfunction lamps that are what color?
24.
What is an alternative name for a brake pedal?
25.
What is the function of a safety valve?