Free Florida CDL Air Brakes Practice Test 2022

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 2022 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
List of questions
1.
The safety valve discharges automatically at the pressure of:
2.
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
3.
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.
4.
When is it OK to leave your truck unattended without applying the parking brakes and choking the wheels?
5.
The air brake lag distance at 55 mph on dry pavement adds about ____ feet.
6.
How far should manual slack adjusters move before they need to be adjusted?
7.
Total stopping distance for air brakes is longer than that for hydraulic brakes due to ______ distance.
8.
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?
9.
The ____ shows how much pressure is in the air tanks.
10.
The low air pressure warning signal indicates:
11.
When should the spring brakes activate?
12.
What is the purpose of an antilock braking system (ABS)?
13.
When using a vehicle with air brakes, the parking needs to be used _______.
14.
When brakes are applied, the brake shoes will press against the:
15.
Besides heat, another cause of brake fade is:
16.
The S-cam:
17.
To stop the vehicle, the brake shoes and linings are pushed against:
18.
Brake drums (or discs) must not have cracks longer than ____ the width of the friction area.
19.
When inspecting the air brake system, what particular item in the engine compartment should the driver pay specific attention to?
20.
Brake drums should not have cracks longer than what length?
21.
In dual air systems, how long should it take air pressure to build 85 to 100 psi?
22.
If air supply drops when driving, the tractor protection valve ________.
23.
What does the air compressor governor control?
24.
Vehicles with ABS have malfunction lamps that are what color?
25.
Water and oil _______.