Air Brakes #1
Air Brakes Endorsement Test | Virginia 2025 #1 Page 4 of 4
Train for FREE online with our Virginia 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 VA 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 . If an air compressor is belt-driven, the belt should be routinely checked to ensure that it is:
If your vehicle has air brakes, the air compressor drive belt should be checked before each drive. Check the tightness of the belt and verify that it is in good condition.
20 . What do the two systems of a dual air brake system share?
Both systems in a dual air brake systems share a single air compressor. If the air compressor is damaged, neither system will be able to operate properly.
21 . Do not operate a vehicle if any brake drums have cracks that are larger than ____ of the width of the friction area.
Before beginning a trip, it is important to check the brake drums during your walk-around inspection. It is unsafe to drive if any brake drum has a crack more than one half of the width of the friction area.
22 . 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.
23 . When leaving your vehicle unattended:
In general, you should always use the parking brake when parking your vehicle. However, you should not apply the parking brake if your brakes are very hot or if your brakes are wet and temperatures are below freezing.
24 . If the air pressure in an air brake system becomes too low, it may:
If the pressure in an air brake system becomes too low, the brakes will no longer work. If the low pressure warning signal activates, you should leave the road and stop safely while you still have braking power.
25 . When you are about to start down a hill, you should switch into a ____ gear.
Before starting down a hill, be sure to switch into a low gear. Gravity will increase your vehicle's speed as you travel downhill.
2025 Virginia | Frequently Asked Questions
A CDL Class B license in Virginia allows you to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or towing a vehicle not exceeding 10,000 pounds GVWR. This includes buses, dump trucks, delivery trucks, and utility vehicles. It doesn't permit the operation of Class A vehicles unless the proper endorsements are obtained.
A Class B Commercial Driver's License (CDL) in Virginia allows you to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or any such vehicle towing another not exceeding 10,000 pounds. This includes buses, farm labor vehicles, dump trucks, delivery trucks, and utility vehicles.
To acquire a Class B CDL license in Virginia, you must be at least 18 years old (21 for interstate driving), have a valid Virginia driver's license, pass a vision test and a two-part knowledge test, and successfully complete a skills test in a vehicle representative of the type you'll be driving. You must also provide proof of identity, residency, and social security number.
In Virginia, you must be at least 18 years old to qualify for a Class B CDL license for intrastate driving (within Virginia only). However, if you plan to drive interstate (across state lines), or haul hazardous materials, you must be at least 21 years old.
Endorsements aren't necessary for a Class B CDL license, but they grant additional privileges. For example, an "H" endorsement allows the transport of hazardous materials, while a "P" endorsement permits passenger transport. To obtain an endorsement, you must pass additional written and/or skills tests related to the specific type of commercial vehicle operation.
The Class B CDL skills assessment in Virginia comprises three parts: pre-trip vehicle inspection, basic vehicle control, and on-road driving. You'll need to demonstrate your ability to inspect your vehicle, show that you can control it in a variety of situations, and prove that you can safely drive it in traffic.
Yes, Class B CDL license holders in Virginia are limited to operating vehicles with a GVWR of 26,001 pounds or more, or towing vehicles weighing less than 10,000 pounds. They cannot operate Class A combination vehicles. Additionally, without proper endorsements, they can't drive passenger vehicles, school buses, or vehicles carrying hazardous materials.
Yes, in Virginia, you can take the written Class B CDL test in several languages besides English. These include Spanish, Korean, Vietnamese, and others. However, federal regulations require that all CDL applicants demonstrate proficiency in English to ensure they can understand traffic signs and safety rules.
Yes, you can request accommodations for the Class B CDL written exam in Virginia due to a disability. The Virginia Department of Motor Vehicles (DMV) provides reasonable accommodations as required by the Americans with Disabilities Act. Contact your local DMV office in advance to discuss your specific needs and arrange appropriate accommodations.
In Virginia, if you fail the Class B CDL written test, you can retake it. However, you must wait at least 15 days between each attempt. There is also a re-examination fee for each subsequent attempt. It's recommended to study the CDL manual thoroughly before retesting to improve your chances of passing.