# 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
Perfect for first-time, renewal applicants
FL CDL Air Brakes Test format:
25 questions
80% passing score
List of questions
1.
An automatic wig wag will rise out of your view when the pressure in your system rises above what psi?
2.
Air brakes consist of ________.
3.
"A slack adjuster’s free play needs to be adjusted if it is more than about ______ when you pull hard on it."
4.
Parking or emergency brakes of trucks and buses can be legally held on by ____ pressure.
5.
Emergency stab braking is:
6.
The brake system that applies and releases the brakes when the driver uses the brake pedal is the ________ brake system.
7.
8.
The application pressure gauge shows how much air pressure you:
9.
10.
It is not safe to drive a vehicle that has brake drums with cracks that are longer than _____ of the width of the friction area.
11.
The level at which the air compressor stops pumping air is:
12.
Air braking takes more time than hydraulic braking because:
13.
When checking the air pressure buildup, pressure should build:
14.
Total stopping distance with air brakes is Perception distance + Braking Distance + Brake Lag Distance + _____.
15.
If air pressure is not built up within the correct amount of time, then:
16.
Average stopping distance under normal conditions at 55 mph is:
17.
If your vehicle has an alcohol evaporator, every day during cold weather you should:
18.
The service brake system ________.
19.
If one air system is very low on pressure _______.
20.
Some vehicles are equipped with a separate air tank used specifically to release the spring brakes in an emergency, called a:
21.
How does the antilock brake system benefit the driver?
22.
Vehicles with air brakes _________.
23.
Air tanks should be drained:
24.
To prevent too much pressure from building up in the system, what is installed?
25.
What happens when pressure is put on the air brakes?