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Free Florida CDL Air Brakes Practice Test 2023

Do you need a Florida Air Brakes endorsement or an L endorsement for your commercial driving license? The Florida CDL practice 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 Florida CDL practice test questions are relevant, all of our practice questions are based on the Florida CDL Handbook. 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 with our CDL practice test to get ready to pass the Florida CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2021 FL commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
FL CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
Study now
List of questions
1.
Your truck or bus has a dual air brake system. If a low-pressure warning comes on for only one system, what should you do?
2.
The stop light switch:
3.
Modern air brakes combine three different systems. They are the service, the parking, and the _____ brakes.
4.
Excessive use of the service brakes results in overheating which can lead to:
5.
Your truck has a dual air system and one of the systems loses its pressure. What will happen?
6.
If you must make an emergency stop, you should brake so you:
7.
When testing air leakage rates for single vehicles, initial loss rate should be less than:
8.
When parking a vehicle with a modulating control valve ________.
9.
In most newer vehicles, the parking brake control will be:
10.
What happens when your brake drums get very hot?
11.
Why is manually adjusting automatic slack adjusters dangerous?
12.
What must the air pressure be, at minimum, in both parts of a dual air brake system?
13.
What tells the driver how much air pressure is in the air tanks?
14.
Why does a heavily loaded vehicle need a longer distance to stop?
15.
On newer vehicles what color is the parking brake knob?
16.
How should the air leakage rate be tested?
17.
Which of the following helps the stop light switch work?
18.
The air compressor is connected to the engine through ______.
19.
Brake drums or discs _______.
20.
Spring brakes are applied:
21.
Vehicles without automatic air tank drains need to be checked manually to remove ________?
22.
What is the purpose of an air storage tank?
23.
On a long or steep downgrade, how should vehicle speed be primarily controlled?
24.
The warning light and buzzer will come on when the air pressure in either system drops below what psi?
25.
Required on all vehicles with air brakes, what tells the driver that air pressure is too low?
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