Air Brakes #2
Air Brakes Endorsement Test | West Virginia 2025 #2 Page 3 of 4
Train for FREE online with our West 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 WV 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 . What does ABS do?
Prevent the brakes from being used if downshifting would be more effective
The purpose of an Anti-Lock Braking System (ABS) is to prevent wheels from locking up during hard applications of the brakes, especially on slippery surfaces.
14 . When you need to stop in an emergency, you should:
Expect your vehicle to slow down more quickly than usual.
If you need to make an emergency stop, you can use either the controlled braking method or the stab braking method. It's important to brake in a way that keeps your vehicle traveling in a straight line while still allowing you to turn, if necessary.
15 . The emergency brake system uses:
Only parts unique to the emergency brake system.
In an air brake system, there are three different braking systems: a service brake system, a parking brake system, and an emergency brake system. The emergency brake system uses parts of both the parking and service brake systems.
16 . Before driving a vehicle with a dual air brake system, you must wait for the air compressor to build a minimum of ____ in both the primary and secondary systems.
100 psi
Before driving a vehicle with a dual air brake system, you should wait for the air compressor to build up at least 100 psi in both the primary and secondary systems.
17 . How is water and compressor oil removed from the bottom of an air storage tank?
A sponge is used to soak up the water and oil.
Water and compressor oil are removed from air storage tanks through a drain valve. The water and oil can damage the brakes if left to accumulate in the system. Manually operated tanks must be drained every day to remove this build-up.
18 . 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 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.
2025 West Virginia | Frequently Asked Questions
To acquire a CDL Hazmat endorsement in West Virginia, you must already possess a valid CDL. Then, pass the Hazmat knowledge test at a DMV office. Before the test, you need to complete a hazardous materials endorsement application and pass a TSA background check. Finally, pay the required fees to receive your endorsement.
To obtain a CDL Hazmat license, you must already possess a valid Commercial Driver's License (CDL). You should be at least 21 years old and have U.S citizenship or legal Permanent Resident status. Prior to the Hazmat knowledge test, you must pass a Transportation Security Administration (TSA) background check. Good driving record and physical fitness are also required.
When applying for a CDL Hazmat endorsement, you'll need to provide proof of U.S. citizenship or permanent legal residency (like a birth certificate or green card), your valid Commercial Driver's License (CDL), and a completed Hazardous Materials Endorsement application. You'll also need to provide fingerprints for the background check conducted by the Transportation Security Administration.
Yes, there is a dedicated written test for the CDL Hazmat endorsement. This test is designed to evaluate your knowledge of the rules and regulations related to transporting hazardous materials. It covers topics like loading and unloading hazardous materials, bulk packaging marking, driving and parking rules, and emergency response procedures.
The written test for the CDL Hazmat endorsement covers various subjects related to hazardous materials. These include identifying different types of hazardous materials, understanding shipping papers, placarding rules, loading and unloading procedures, emergency response procedures, and safety protocols. The test also covers federal and state regulations for transporting hazardous materials.
Yes, there are extra charges associated with acquiring a CDL Hazmat endorsement in West Virginia. These include fees for the written test, fingerprinting, background check, and endorsement itself. The exact amount can vary, so it's recommended to check with the local DMV for the most current fees.
Yes, background checks and security clearances are mandatory for the CDL Hazmat endorsement. This includes a fingerprint-based TSA (Transportation Security Administration) security threat assessment. The purpose is to ensure the driver doesn't pose a security risk while transporting hazardous materials.
Yes, specialized training and certification are required for the CDL Hazmat endorsement. In addition to passing the general CDL test, applicants must pass a specific Hazmat knowledge test. They must also undergo a TSA background check. The endorsement is then added to their commercial driver’s license upon successful completion of these requirements.
No, you cannot legally transport hazardous materials without a valid CDL Hazmat endorsement in West Virginia, or in any other state. This endorsement ensures that the driver has the necessary training and knowledge to handle hazardous materials safely and appropriately. Violating this requirement can lead to serious penalties.
Yes, you can add the CDL Hazmat endorsement to your current CDL license. However, it requires passing the Hazmat knowledge test and a TSA background check. Once these steps are successfully completed, the Hazmat endorsement is added to your existing CDL without needing a new license.