Combination #1
Combination Vehicles Practice Test | Tennessee 2024 #1 Page 3 of 3
Train for FREE online with our Tennessee CDL combination vehicle 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 combination license in 2024, 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 DMV requirements for issuing a combination license may vary from state to state.
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15 . A tractor protection valve is:
A device that allows the battery to recharge efficiently.
On combination vehicles with air brakes, the tractor protection valve keeps air in the tractor or truck brake system, should the trailer develop a bad leak or break away from the tractor.
16 . An Anti-Lock Braking System (ABS):
Assists with the operation of brake lights.
The function of an Anti-Lock Braking System (ABS) is to prevent a vehicle's wheels from locking up during hard braking.
17 . If you use the trailer hand brake while your trailer is skidding, it will:
If you are experiencing a trailer jackknife, you can help your tires regain traction by releasing the brakes. Using a trailer hand brake while experiencing a skid will only cause the skid to continue.
18 . If a trailer is too high:
Coupling will be easier.
Before coupling together a tractor and a trailer, you should make sure the trailer is at the proper height. If the trailer is too low, the trailer nose may be damaged. If the trailer is too high, it may not be able to couple correctly.
19 . If a parked trailer does not have spring brakes, you should keep the trailer from moving by:
Parking on a slight incline.
If a parked trailer does not have spring brakes, wheel chocks should be used to prevent it from moving. Air brakes can only hold a parked trailer for as long as there is air pressure remaining in the air tanks, so wheel chocks will ensure safety.
20 . Test the tractor protection valve by:
Releasing air with the gas pedal.
You should test the tractor protection valve by allowing the air supply to properly charge, turning off the engine, then releasing air from the system by pressing the brake pedal several times. The tractor protection valve should move into its emergency position when psi drops to an unsafe level.
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.