Air Brakes #1
Air Brakes Endorsement Test | Florida 2025 #1 Page 4 of 4
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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19 . Front brake limiting valves were intended to:
Remove uncertainty when applying the brakes.
Some older vehicles with air brakes have front brake limiting valves. These valves were intended to reduce the risk of front wheels skidding. However, research has shown that such devices are unnecessary, so they should be left in the "normal" position.
20 . All air tanks must include:
A warning sticker.
Air brake system tanks must contain drain valves. These valves are used to drain accumulated oil and water from the tanks and may be either manually or automatically operated.
21 . Friction inside a brake drum is caused when the brake shoes and linings:
Create excess heat.
Friction inside a brake drum is caused when the brake shoes and linings push against the inside of the drum. The friction in the drums will slow and stop the vehicle.
22 . During a static leakage test, the maximum leakage rate for a double combination vehicle is:
4 psi in one minute.
When performing a static leakage test on a double combination vehicle with air brakes, the leakage rate should be no more than 3 psi in one minute. If air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.
23 . What do anti-lock brakes do?
Prevent a vehicle from accelerating while traveling downhill
The function of an Anti-Lock Braking System (ABS) is to prevent the vehicle's wheels from locking up from hard brake application.
24 . Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when:
Driving uphill.
Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when air tank pressure falls to a level between 20 and 45 psi. You can do this by chocking the wheels and releasing air from the braking system by stepping on and off the brake pedal. Once the pressure drops to an unsafe level, the parking brake valve should pop out and spring brakes should come on.
25 . If the safety relief valve in an air brake system is releasing air:
The safety relief valve in an air brake system releases air if necessary to prevent pressure in the system from becoming too high. If the valve starts releasing air, there is something wrong. Have a mechanic fix the problem.
See the exact questions that will be on the 2025 Florida DMV exam.
99.2% of people who use the cheat sheet pass the FIRST TIME
Lillian MCcranie explains how our CDL study guide was helpful in passing the exam and recommends it to everyone.
Cameron tells us how he purchased the CDL exam, and found it to be a useful tool which helped him pass the exam and find a job.
2025 Florida | Frequently Asked Questions
To acquire a CDL Hazmat endorsement in Florida, you must already hold a valid CDL. Complete a HAZMAT endorsement application, pass a written test, and undergo a TSA background check. Once approved, you can add the Hazmat endorsement to your CDL. Make sure to renew it every five years or according to Florida's specific regulations.
To obtain a CDL Hazmat license, you must first have a Commercial Driver's License (CDL). You must also be at least 21 years old, a U.S. citizen or have legal status, and be able to read and speak English. Additionally, you need to pass the Hazmat knowledge test and undergo a Transportation Security Administration (TSA) background check.
When applying for a CDL Hazmat endorsement, you need to provide proof of U.S. citizenship or legal status, such as a passport or birth certificate. You also need your current CDL. Additionally, you must complete the Hazardous Materials Endorsement application form, and provide fingerprints for the TSA background check. Always check with local regulations for any additional requirements.
Yes, there is a dedicated written test for the CDL Hazmat endorsement. The Hazardous Materials Endorsement Knowledge Test assesses your understanding of the rules and regulations related to transporting hazardous materials. It covers topics like loading and unloading, bulk packaging marking, driving and parking rules, and emergency response procedures.
The written test for the CDL Hazmat endorsement covers a variety of topics related to handling hazardous materials. These include understanding hazard classifications, shipping papers, placarding rules, emergency response procedures, safe loading and unloading practices, and incident reporting requirements. It also tests knowledge of federal and state regulations for transporting hazardous materials.
Yes, acquiring a CDL Hazmat endorsement involves additional charges. The cost includes a fee for the endorsement application, a fingerprinting fee for the TSA security threat assessment, and a fee for the knowledge test. The exact amounts can vary by state, so it's best to check with your local DMV or equivalent agency for specific pricing.
Yes, obtaining a CDL Hazmat endorsement requires passing a Transportation Security Administration (TSA) background check. This involves fingerprinting and checking criminal, immigration, and terrorism records. The goal is to ensure the safety and security of hazardous material transportation. Applicants must also have no disqualifying criminal offenses.
Yes, specialized training is necessary for the CDL Hazmat endorsement. Applicants must pass a written knowledge test on handling hazardous materials. While not required, many choose to enroll in training programs to prepare. After passing the test, a background check by the TSA is also required before the Hazmat endorsement is granted.
No, you cannot legally transport hazardous materials without a valid CDL Hazmat endorsement in the United States. This endorsement ensures that drivers are qualified and understand the necessary safety protocols for handling hazardous materials. Violation of this law can lead to hefty fines and potential loss of commercial driving privileges.
You can add the Hazmat endorsement to your current CDL. You don't need to apply for a new CDL. However, you must pass the Hazmat knowledge test and a TSA background check. Once you've passed these, you can add the endorsement to your existing CDL by visiting your local Department of Motor Vehicles (DMV).
