Air Brakes #2
Air Brakes Endorsement Test | Florida 2025 #2
Train for FREE online with our Florida CDL air brake test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a FL Class A/Class B driver license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that the requirements for CDL may vary from state to state.
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1 . Some air brake systems use alcohol:
To reduce the risk of rust forming on air brake valves.
Some air brake systems contain an alcohol evaporator. This device introduces alcohol into the braking system to inhibit the formation of ice.
2 . An air compressor governor will stop the compressor from pumping air once the air tanks have an air pressure level of:
80 psi.
An air compressor governor will stop the compressor from pumping air once the air tanks are at an air pressure level of 125 psi. This air pressure level is referred to as the "cut-out" level.
3 . When using the controlled braking method in an emergency situation, you should:
Apply the brakes with minimal pressure.
The controlled braking method for emergency stops involves applying the brakes as hard as you can without locking the wheels. Keep steering wheel movements small when braking in this way.
4 . What happens if the air pressure in a system's air tanks falls below 60 psi?
The vehicle should stop.
In an air brake system, a low pressure warning signal should activate if the pressure in the air tanks falls to a level below 60 psi. This signal may be in the form of a warning light or a wig wag.
5 . What can happen if a parking brake is used in very wet weather when temperatures are below freezing?
The brakes may explode.
If you use the parking brakes when the weather is very wet and the temperature is below freezing, the brakes may become frozen, preventing the vehicle from moving.
6 . What is removed when an air tank is drained?
Chlorine
In an air brake system, the air storage tanks are equipped with drains to allow water and compressor oil to be removed. The water and oil can damage the brakes if left to accumulate in the system.
2025 Florida | Frequently Asked Questions
A CDL Class A license in Florida allows the holder to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, provided the vehicle(s) being towed have a GVWR of 10,001 pounds or more. It covers vehicles like tractor-trailers, truck and trailer combinations, and livestock carriers.
With a Class A CDL license, you can operate vehicles such as tractor-trailers, truck and trailer combinations, tank vehicles, and livestock carriers. This license also covers flatbeds, and vehicles towing trailers or other vehicles over 10,000 pounds. However, additional endorsements may be required for certain types of vehicles like school buses or tank trucks.
To obtain a Class A CDL license in Florida, you must be at least 18 years old (21 for interstate driving), hold a valid Florida driver's license, and pass a vision test. You'll also need to pass a general knowledge test, a combination vehicle test, and a skills test which includes a pre-trip vehicle inspection, basic controls, and on-road driving.
To qualify for a Class A CDL license in Florida, you must be at least 18 years old for intrastate driving (within Florida only) and at least 21 years old for interstate driving (across state lines). You also need to have a valid regular driver's license and pass both written and skills tests.
While a Class A CDL license covers a broad range of large vehicles, specific endorsements are required for certain types of vehicles or cargo. For example, to drive a tanker vehicle, school bus, or hazmat vehicle, you need a Tank (N), School Bus (S), or Hazardous Material (H) endorsement respectively. Each endorsement requires an additional knowledge test.
The Class A CDL skills test encompasses three main areas. The pre-trip vehicle inspection tests your ability to assess if your vehicle is safe to drive. The basic controls test assesses your ability to control the vehicle, back up, and perform turns. The on-road driving test evaluates your driving skills in various traffic situations, including left and right turns, intersections, railway crossings, and highways.
Yes, there are certain limitations for Class A CDL license holders. For instance, they may be restricted to driving automatic transmission vehicles if they took their skills test in such a vehicle. They might also be restricted from driving tank or passenger vehicles or carrying hazardous materials unless they have the appropriate endorsements. Additionally, all CDL holders must comply with federal hours-of-service regulations.
Yes, it is possible to take the written Class A CDL test in languages other than English in Florida. The Florida Department of Highway Safety and Motor Vehicles offers the test in Spanish. However, the Federal Motor Carrier Safety Administration requires that all CDL holders can read and speak English sufficiently to converse with the general public, understand highway traffic signs and signals, respond to official inquiries, and make entries on reports and records.
Yes, accommodations can be made for individuals with disabilities taking the Class A CDL written test in Florida. These may include providing the test in an audio format or allowing extra time. It's necessary to request these accommodations ahead of time from the Florida Department of Highway Safety and Motor Vehicles (DHSMV).
Yes, if you fail the Class A CDL written test in Florida, you can retake it. However, you must wait until the next day to do so. If you fail the test three times, you're required to complete a driver education course before you can attempt the test again. Always make sure to review the areas where you struggled before retaking the test.