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 B license in Vermont is for operating single vehicles with a gross vehicle weight rating (GVWR) of 26,001 lbs or more, or towing a vehicle not exceeding 10,000 lbs GVWR. This includes buses, dump trucks, tow trucks, delivery trucks, and straight trucks. It also requires passing general knowledge and air brakes tests, plus any tests for endorsements.
A Class B CDL license in Vermont allows the holder to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 lbs or more, or a vehicle of this size towing another not exceeding 10,000 lbs GVWR. Vehicles that can be operated include buses, dump trucks, straight trucks, delivery trucks, and tow trucks.
To acquire a Class B 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 test, and obtain a commercial learner's permit (CLP). You must also pass a general knowledge test, an air brakes test if applicable, and a skills test in the vehicle type that your CDL will cover.
In Vermont, you must be at least 18 years old to qualify for a Class B CDL license for intrastate driving (within Vermont only). However, to drive commercial vehicles across state lines (interstate driving), federal regulations require drivers to be at least 21 years old.
Endorsements for a Class B CDL license in Vermont are not necessary but they can expand your driving opportunities. They certify you to drive certain types of vehicles or transport certain goods. Examples include a passenger (P) endorsement for buses, a tank vehicle (N) endorsement, or a hazardous materials (H) endorsement. Each requires additional testing.
The Class B CDL skills assessment in Vermont includes three parts: pre-trip vehicle inspection, basic vehicle control, and on-road driving. You'll need to demonstrate knowledge of your vehicle's components, show you can control your vehicle in a variety of situations, and prove you can safely drive in traffic, following all Vermont motor vehicle laws.
Class B CDL license holders in Vermont are limited to operating single vehicles with a gross vehicle weight rating of 26,001 lbs or more, or towing a vehicle not exceeding 10,000 lbs. They can't drive a tractor-trailer combination (Class A) or motorcycles unless they have the appropriate endorsements or additional licenses.
In Vermont, the written Class B Commercial Driver's License (CDL) test is primarily administered in English. However, some locations may provide tests in Spanish. It's recommended to contact your local DMV office ahead of time to inquire about language options. Please note, federal regulations require all CDL holders to read and speak English adequately to converse with the general public and understand highway traffic signs and signals.
Yes, you can request accommodations for the Class B CDL written exam in Vermont if you have a disability. Contact the Vermont Department of Motor Vehicles (DMV) in advance to discuss your needs. Accommodations may include extra time, a separate testing room, or use of assistive technology, depending on your specific needs and the DMV's policies.
Yes, if you don't pass the Class B CDL written test in Vermont, you can retake it. However, you must wait at least one day before retaking the test. If you fail three times, you must wait 30 days before your next attempt. There may also be additional fees for each retest. Always check with the Vermont DMV for the most accurate information.
