Air Brakes #1
Air Brakes Endorsement Test | Tennessee 2025 #1
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 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 . Air tank drains:
Must remain open while driving.
In an air brake system, the air tanks are equipped with drains that allow water and compressor oil to be removed from the system. If allowed to build up, water and compressor oil can damage an air brake system.
3 . ____ 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.
4 . 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.
5 . Brake linings should be:
Brake linings should not be loose or soaked with oil or grease. They shouldn't be dangerously thin.
6 . Why do you need to drain air tanks regularly?
To remove bad air from the tanks
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. Tanks must be drained regularly to remove this build-up.
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2025 Tennessee | Frequently Asked Questions
To acquire a CDL Passenger endorsement in Tennessee, you must already hold a valid CDL. Next, you'll need to pass the passenger transport test. This involves studying the relevant sections in the TN CDL manual, taking practice tests, and finally passing the actual test at a DMV office. You'll also need to pay the necessary fees.
To obtain a CDL Passenger license in Tennessee, you must have a valid Tennessee CDL. You must also pass the Passenger Transport Test, which includes a written exam and a skills test. Furthermore, you must be at least 21 years old, pass a physical examination, and have a clean driving record. Lastly, you'll need to pay the required fees.
While specific training is not legally required to secure a CDL Passenger endorsement in Tennessee, it is highly recommended. Training can help you pass the Passenger Transport Test, which includes both a written exam and a skills test. Experience driving larger vehicles can also be beneficial, but it isn't a legal requirement.
Yes, to secure a CDL Passenger endorsement in Tennessee, you must pass the Passenger Transport Test. This test includes both a written exam and a skills test. The written exam covers topics such as vehicle inspection, loading and trip start, on the road, after-trip vehicle inspection, prohibited practices, and use of brake-door interlocks.
During the CDL Passenger endorsement assessment, you will need to showcase skills such as proper vehicle inspection, safe loading and unloading of passengers, managing emergency situations, following traffic laws and regulations, and demonstrating effective communication with passengers. Additionally, you may be required to perform maneuvers such as parallel parking, backing up, and making turns in a controlled manner.
No, you cannot legally transport passengers in Tennessee without a valid CDL Passenger endorsement. This endorsement is required for drivers who wish to drive a vehicle designed to carry 16 or more passengers, including the driver. Driving such a vehicle without the proper endorsement can lead to serious penalties, including fines and suspension of your CDL.
Yes, you can add the CDL Passenger endorsement to your existing commercial driver's license in Tennessee. To do so, you'll need to pass the Passenger Transport written test and skills test. You don't need to apply for a new CDL, but there will be additional fees for the endorsement.
Yes, there are specific restrictions for drivers with a CDL Passenger endorsement in Tennessee. Drivers must not have more than one license, the vehicle must not exceed the authorized passenger capacity, and drivers must adhere to safety regulations. Any violation can result in fines, imprisonment, disqualification, or loss of the CDL Passenger endorsement.
Yes, there are age-related prerequisites for acquiring the CDL Passenger endorsement in Tennessee. You must be at least 21 years old to drive a commercial motor vehicle across state lines (interstate) or to carry hazardous materials. However, if you're only driving within Tennessee (intrastate), you can be as young as 18.
With a CDL Passenger endorsement, you can operate commercial vehicles designed to carry 16 or more passengers, including the driver. This includes buses, shuttle vans, and school buses. However, to drive a school bus in Tennessee, you'll need an additional School Bus (S) endorsement on top of the Passenger (P) endorsement.
