FREE Air Brakes Endorsement Test Online | Tennessee 2024
Train for FREE online with our Tennessee 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 TN Class A/Class B driver license in 2021, 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 . A ____ allows a driver to gradually apply spring brakes.
A modulating control valve allows a driver to gradually apply spring brakes. In equipped vehicles, the valve is controlled by a lever located on the dashboard.
2 . In a dual air brake system:
One system is the main braking system and a second system is ready to be used if the first one fails.
A dual air brake system is made up of two separate air brake systems. The systems share a single set of brake controls, but each has its own air tanks, hoses, and lines.
3 . 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.
4 . How much distance will an air brake-equipped vehicle need to come to a complete stop if it is traveling at 55 mph under ideal driving conditions?
A vehicle's total stopping distance is made up of perception distance, reaction distance, brake lag distance, and braking distance. With all of these factors included, an air brake-equipped vehicle traveling at a speed of 55 mph under ideal driving conditions will need approximately 450 feet to come to a complete stop.
5 . During an applied leakage test, the maximum leakage rate for a double combination vehicle is ____ in a minute.
It is important to know the maximum air loss rate that is safe for your specific vehicle. A double combination vehicle should have a leakage rate no higher than 4 psi in a minute during an applied leakage test.
6 . Air tank drains:
Must remain open while driving.
Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Manually operated air tank drains must be opened daily to remove this build-up.
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2024 Tennessee | Frequently Asked Questions
A CDL Class A license in Tennessee allows the holder to operate any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more, provided the Gross Vehicle Weight Rating (GVWR) of the vehicle(s) being towed exceeds 10,000 pounds. It covers vehicles like tractor-trailers, truck and trailer combinations, and flatbeds.
A Class A CDL license in Tennessee allows the holder to operate vehicles such as tractor-trailers, truck and trailer combinations, flatbeds, tanker vehicles, and livestock carriers. It is typically used for long-haul or over-the-road (OTR) trucking. The license covers any vehicle with a GCWR of 26,001 pounds or more if the towed vehicle is over 10,000 pounds.
To obtain a Class A CDL license in Tennessee, you must be at least 21 years old (18-20 years for intrastate driving), possess a valid Tennessee driver's license, pass a vision test, and successfully complete both a knowledge test and a skills test. You'll also need to provide proof of citizenship or lawful permanent residency.
In Tennessee, you must be at least 21 years old to qualify for a Class A Commercial Driver's License (CDL) for interstate driving. However, you can obtain a Class A CDL for intrastate driving (within Tennessee) if you are at least 18 years old.
Specific endorsements are not required for a Class A CDL license, but they can expand your job opportunities. Endorsements allow you to operate specific types of vehicles, such as tank vehicles (N), passenger vehicles (P), school buses (S), or vehicles carrying hazardous materials (H). Each endorsement requires passing additional knowledge and/or skills tests.
The Class A CDL skills test in Tennessee encompasses three parts: a pre-trip inspection to confirm that your vehicle is safe to drive, a basic vehicle control test to demonstrate your ability to maneuver and control the vehicle, and an on-road driving test where you'll be evaluated on your interaction with traffic and adherence to safety rules.
Yes, there can be limitations on Class A CDL license holders. These are typically represented as restrictions noted on the license. For example, if you take your skills test in a vehicle without air brakes, you'll have an "L" restriction and can't operate vehicles with air brakes. Other restrictions can relate to medical conditions or the specific type of vehicle used for testing.
In Tennessee, the Class A CDL written test is primarily administered in English. However, some locations may offer the test in Spanish. It's important to note that all CDL holders must be able to read and speak English well enough to communicate with the general public, understand highway traffic signs and signals, respond to official inquiries, and make entries on reports and records.
Yes, you can request accommodations for the Class A CDL written test if you have a disability. The Tennessee Department of Safety & Homeland Security is committed to ensuring accessibility for all test takers. You should contact them directly ahead of your scheduled test to discuss your specific needs and arrange appropriate accommodations.
If you don't pass the Class A CDL written test, you can retake it. However, you must wait at least one day before retesting. There's no limit on how many times you can retake the test, but each attempt requires a fee. It's advisable to study thoroughly before retesting to increase your chances of passing.
