Air Brakes #1
Air Brakes Endorsement Test | Vermont 2025 #1 Page 3 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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13 . Brake fade is a result of:
If brakes are overused, they can become too hot. This overheating causes them to fade, making them less effective at slowing the vehicle.
14 . A low air pressure warning signal should activate:
In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 55 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.
15 . An alcohol evaporator is especially important:
Some air brake systems contain an alcohol evaporator. This evaporator introduces alcohol into the system to help prevent ice from forming in cold weather.
16 . In a vehicle with dual air brakes, a leak in one system ____ the second system.
A dual air brake system is made up of two separate air brake systems. If there is an air leak in one system, it may not affect the other.
17 . What does the air compressor governor do?
In an air brake system, the air compressor governor controls when the air compressor pumps air into the storage tanks. It stops pumping if the pressure in the tanks becomes too high, and begins pumping if the pressure becomes too low.
18 . What is often found in compressed air?
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.
See the exact questions that will be on the 2025 Vermont DMV exam.
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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.
