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
List of questions
The air compressor stops pumping air at what psi?
The parking or emergency brake on a heavy vehicle can only be held in position by something that cannot leak away, like:
The most common type of foundation brakes are:
The reduced stopping power caused by overuse of the service brakes and excessive heat is called:
All air brake equipped vehicles have:
The most important thing to do when a low air pressure warning comes on is:
Where is the modulating control valve located on some vehicles?
When performing the controlled braking method for an emergency stop, you are _________.
Air governor cut-out should be at around:
What type of brakes pushes a wedge between the ends of two brake shoes to stop the vehicle?
Some vehicles are equipped with a control allowing you to apply the spring brakes gradually, called a:
When does the air compressor governor allow air to start pumping?
If you must make an emergency stop, you should brake so you:
The safety valve is set automatically when pressure is:
Compared to hydraulic brakes, air brakes add how much distance to an average 55 mph stop?
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
The air tanks must be drained because:
Why do air brakes take longer to stop than hydraulic brakes?
Why should air tanks be drained completely?
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
The belt of a belt-driven air compressor should be ________.
What is used to put alcohol into the system and reduce ice risk?
The governor stops the compressor from pumping air at:
A warning to drivers behind you that the air brakes have been applied is the:
What is the function of a safety valve?