Air Brakes #2
Air Brakes Endorsement Test | Tennessee 2026 #2 Page 3 of 4
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 2026, 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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13 . A vehicle equipped with an Anti-Lock Braking System (ABS) uses a ____ light to warn that the system is not working properly.
White
Anti-Lock Braking System (ABS) malfunction lamps are usually yellow. Even if the ABS isn't working properly, a driver will still have access to the vehicle's usual braking functions.
14 . During a walk-around inspection, ensure there are no cracks on the brake drums that are more than ____ of the width of the friction area.
One tenth
Before beginning a trip, it is important to check the brake drums during your walk-around inspection. It is unsafe to drive if any brake drum has a crack more than one half of the width of the friction area.
15 . Emergency brakes:
All trucks, truck tractors, and buses must be equipped with emergency brakes and parking brakes.
16 . A low air pressure warning signal:
A vehicle with air brakes must be equipped with a low air pressure warning signal. If the warning signal goes off while a vehicle is being driven, the driver should bring the vehicle to a complete stop and have the system repaired.
17 . When operating a vehicle with a dual air brake system, the driver should:
Before driving a vehicle with a dual air brake system, allow time for the air compressor to build up a minimum of 100 psi pressure in both the primary and secondary systems. Watch the air pressure gauges to monitor the pressure levels.
18 . ____ make up the emergency brake system.
In an air brake system, there are three different braking systems: a service brake system, a parking brake system, and an emergency brake system. The emergency brake system uses parts of both the parking and service brake systems.
2026 Tennessee | Frequently Asked Questions
To secure a CDL Bus endorsement in Tennessee, you must first hold a valid Commercial Driver's License (CDL). Then, pass the Passenger Vehicles endorsement written test, which covers topics like vehicle inspection, loading/unloading passengers, and emergency procedures. After passing the written test, you'll need to pass a skills test in a vehicle similar to the one you'll be driving.
To obtain a CDL Bus license in Tennessee, you need to have a valid driver's license, pass the CDL general knowledge test, and the passenger endorsement test. You also need to pass a medical examination, provide proof of residency and identity, and complete a skills test in the type of vehicle you will be driving. Finally, you must pay the required fees.
Yes, specific training is necessary for a CDL Bus endorsement in Tennessee. Applicants must pass the Passenger Vehicles endorsement written test and a skills test in a vehicle similar to the one they'll be driving. While not required by the state, many choose to attend a professional training school to prepare for these tests and gain practical driving experience.
CDL Bus licenses fall under three classifications: Class A, B, and C. Class A is for vehicles with a combined weight over 26,001 pounds, where the vehicle being towed is over 10,000 pounds. Class B is for single vehicles over 26,001 pounds or towing a vehicle not over 10,000 pounds. Class C covers vehicles designed to transport 16 or more passengers (including the driver), or hazardous material transport.
No, you cannot use your personal vehicle for the CDL Bus driving test. The vehicle used for the test must match the class and type of vehicle you will be driving with your CDL. For a bus endorsement, you would need to take the test in a bus-like vehicle. This ensures you can handle the specific type of vehicle safely.
During the CDL Bus driving test in Tennessee, candidates are evaluated on their ability to inspect their vehicle, manage space around their vehicle, control speed and stop, start and move the bus smoothly and safely. They're also assessed on their ability to turn, merge into traffic, back up the bus, navigate intersections and railroad crossings, and respond to emergency situations.
Yes, for a CDL Bus endorsement in Tennessee, applicants must pass a Department of Transportation (DOT) medical examination. This examination assesses physical and mental health to ensure drivers can safely operate a commercial vehicle. Conditions evaluated include vision, hearing, blood pressure, and medical conditions like epilepsy or heart disease that could impact driving ability.
No, it is not permissible to transport passengers without a valid CDL Bus endorsement in Tennessee. The law requires all drivers who operate a vehicle designed to carry 16 or more passengers, including the driver, to have a Commercial Driver's License (CDL) with a Passenger (P) endorsement. Driving without the proper license or endorsement can lead to serious penalties.
You can add a CDL Bus endorsement to your existing commercial driver's license in Tennessee. You don't need to apply for a new license. However, you must pass the passenger transport test, a pre-trip vehicle inspection test, and a skills test. A road skills test in the type of vehicle you'll be driving is also required.
Yes, there are restrictions for drivers with a CDL Bus endorsement in Tennessee. For instance, bus drivers must comply with hours-of-service regulations, which limit the number of hours they can drive without rest. Additionally, they must maintain a clean driving record and pass regular physical examinations. Violations like DUIs or reckless driving can lead to suspension or revocation of the endorsement.