Air Brakes #1
Air Brakes Endorsement Test | Vermont 2025 #1 Page 4 of 4
Train for FREE online with our Vermont 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 VT 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 . In a vehicle with dual parking control valves, a separate air tank can be used:
In a vehicle with dual parking control valves, there is a separate air tank that can be used to temporarily release the spring brakes if they have been activated due to low air pressure. Pushing in the proper control will release the spring brakes for a short period of time, allowing the driver to move the vehicle in an emergency.
20 . What color light indicates a vehicle's ABS is not working?
On vehicles with Anti-Lock Braking Systems (ABS), yellow malfunction lamps alert the driver to ABS malfunction.
21 . The parking brake in a newer vehicle is applied by:
In newer vehicles with air brakes, the parking brake is controlled by a yellow, diamond-shaped knob. The driver should pull the knob outward to apply the parking brakes and push the knob inward to release them.
22 . What can happen if the air pressure gets too low in an air brake system?
Pressing and releasing the brake pedal unnecessarily can let air out of the braking system faster than the compressor can replace it. Air brakes may cease to work effectively if the pressure becomes too low.
23 . What should happen before the air pressure in an air brake system tank falls below 55 psi?
The low air pressure warning signal must activate before the air supply pressure drops below 55 psi in the air tank. If the warning signal does not turn on when being tested during an inspection, the vehicle is not safe to drive.
24 . Having ABS on only one axle:
If you have an Anti-Lock Braking System (ABS) equipped on only the tractor, only the trailer, or only one axle, you will still have more control over the vehicle when braking than you would without ABS. You should brake normally.
25 . During a static leakage test, what is the maximum leakage rate that is safe for a double combination vehicle?
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 the air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.
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2025 Vermont | Frequently Asked Questions
A CDL Class A license in Vermont is defined as a commercial driver's license that allows the holder to operate any combination of vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more, provided the GVWR of the vehicle(s) being towed exceeds 10,000 pounds. This typically includes tractor-trailers and truck and trailer combinations.
A Class A CDL license in Vermont allows the holder to operate vehicles such as tractor-trailers, truck and trailer combinations, tank vehicles, livestock carriers, and flatbeds. It covers any combination of vehicles with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more if the towed vehicle is over 10,000 pounds.
To obtain a Class A CDL license in Vermont, you must be at least 18 years old (21 for interstate driving), have a valid driver's license, pass a vision exam, and pass the General Knowledge test. You must also pass the Combination Vehicle test and a Pre-Trip Vehicle Inspection test. Lastly, you'll need to pass a skills test in the vehicle type that fits a Class A license.
In Vermont, you must be at least 18 years old to qualify for a Class A Commercial Driver's License (CDL) for intrastate driving (within Vermont only). However, you must be at least 21 years old to drive interstate (across state lines), carry hazardous materials, or transport passengers.
Specific endorsements aren't required for a Class A CDL license in Vermont, but they can provide additional driving privileges. For instance, if you plan to haul hazardous materials, transport passengers, or drive tank vehicles or double/triple trailers, you would need to obtain the corresponding endorsements by passing specific knowledge tests.
The Class A CDL skills test in Vermont has three parts: the Vehicle Inspection Test, the Basic Vehicle Control Test, and the On-Road Driving Test. The test assesses your ability to inspect your vehicle before driving, control the vehicle during different maneuvers, and drive safely in various road and traffic conditions.
Yes, there are limitations for Class A CDL license holders in Vermont. For instance, drivers under 21 can only operate within Vermont (intrastate). Also, certain endorsements like HazMat require a driver to be at least 21. Furthermore, drivers are subject to strict blood alcohol content levels and may face severe penalties for violations.
In Vermont, the written Class A CDL test is primarily offered in English. However, some locations may offer the test in other languages. It's best to contact the local DMV office directly to inquire about language options. For non-English speakers, an interpreter service may be available but it's subject to certain rules and restrictions.
Yes, you can request accommodations for the Class A CDL written test in Vermont if you have a disability. The Vermont DMV is committed to providing equal access to all services, including testing accommodations. These may include sign language interpreters, extended testing time, or tests in alternative formats. Contact your local DMV office to discuss your specific needs.
Yes, if you don't pass the Class A CDL written test in Vermont, you can retake it. However, you must wait at least one day before retesting. There is also a retesting fee that you'll need to pay each time. It's advisable to review your study materials thoroughly before attempting the test again.
