# 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.
What can legally hold a parking or emergency brake in position for a truck, truck tractor, or bus?
2.
A low pressure warning signal could be __________.
3.
To test the vehicle's service brakes, move the vehicle:
4.
On a long or steep downgrade, the foot brakes should be used:
5.
The 3 individual systems of the air brakes are the service brakes, emergency brake, and:
6.
Excessive heat caused by using your brakes too often can also cause:
7.
The spring brakes used on the chambers in a straight truck will bring you to a stop when air pressure drops below ___ psi.
8.
While applying the brakes, what tells the driver how much air pressure is being used?
9.
When checking the low pressure warning signal, it should turn on before the pressure drops below what psi?
10.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?
11.
If the air compressor should develop a leak, what keeps the air in the tanks?
12.
If the low air warning comes on while you are driving, you should:
13.
The safety valve reduces pressure at ___ psi.
14.
If you are driving down a steep downgrade and have reached your safe speed of 40 mph, you would apply the service brake until your speed dropped to ____ mph.
15.
The emergency spring brake release knob is:
16.
How should you check that your service brakes are working properly?
17.
The most common problem found in roadside inspections is:
18.
The use of brakes on a long and steep downgrade under normal conditions is only a supplement to:
19.
How are brakes designed?
20.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
21.
Initial air leakage rate for combination vehicles should be:
22.
Automatic adjusters should ________.
23.
The safety valve in the air compressor tank is set to open at _____.
24.
You should use the parking brake _____________.
25.
What is proper braking technique for drivers travelling down a hill or any other downgrade?