Air Brakes Endorsement Test | West Virginia 2025 #1

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.

Number of Question 25

Passing Score 20

Number of Tests 20

1 . A low air pressure warning signal should activate:

When tank pressure falls below 120 psi.

When tank pressure falls below 60 psi.

When tank pressure falls below 10 psi.

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.

2 . 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.

25 psi

50 psi

75 psi

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.

3 . When using the controlled braking method in an emergency situation, you should:

Apply the brakes as hard as possible without locking the wheels.

Apply the brakes with about half of your usual force.

Apply the brakes so the wheels lock.

Apply the brakes with minimal pressure.

The controlled braking method for emergency stops involves applying the brakes as hard as you can without locking the wheels. Keep steering wheel movements small when braking in this way.

4 . When you press the brake pedal in a vehicle with S-cam brakes, air pressure pushes out the rod and moves the:

Slack adjuster.

Axle.

Brake drum.

Alcohol evaporator.

When pressing the brake pedal in a vehicle with S-cam brakes, air will enter the brake chambers. The added air pressure will push out the rods and move slack adjusters, twisting the brake camshafts.

5 . Spring brakes come on:

When too much air pressure is lost.

When a control on the dashboard is activated.

When the tires have minimal tread depth.

When the brakes are noisy.

Spring brakes come on automatically when air pressure drops to an unsafe psi level. Instead of waiting for the spring brakes to automatically activate, you should safely exit the road as soon as you notice the low pressure warning signal and bring your vehicle to a stop while you are still able to control the brakes.

6 . While driving, spring brakes are generally held in place by:

Air pressure.

Chocks.

Foundation brakes.

Sturdy ties.

While driving, spring brakes are generally held in place by air pressure. If the air pressure gets low enough, the springs will activate the brakes.

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2025 West Virginia | Frequently Asked Questions

To acquire a CDL Tank endorsement in West Virginia, you need to pass the Tank Vehicle endorsement test. This test covers topics such as inspecting tank vehicles, driving tank vehicles, and safe driving rules. You can prepare for the test by studying the West Virginia CDL handbook. Once you pass the test, the endorsement will be added to your CDL.

To obtain a CDL Tank license, you must already hold a Commercial Driver's License (CDL). You must then pass the Tank Vehicle endorsement test, which covers inspecting tank vehicles, driving tank vehicles, and safe driving rules. It's essential to study the relevant sections in your state's CDL manual to prepare for this test.

While specific training or experience isn't mandatory for a CDL Tank endorsement in West Virginia, it's highly recommended. Training can provide knowledge on the complexities of handling tank vehicles, including load distribution and liquid surge. Experience driving similar vehicles can be beneficial. However, passing the Tank Vehicle endorsement test is the only legal requirement.

Yes, to obtain a CDL Tank endorsement in West Virginia, you must pass the Tank Vehicle endorsement test. This written exam covers topics such as inspecting tank vehicles, driving tank vehicles, and safe driving rules. It's an additional test beyond the general CDL knowledge exam. Study materials are available in the West Virginia CDL handbook.

The written test for the CDL Tank endorsement covers several topics. These include inspecting tank vehicles, driving tank vehicles, and understanding the unique properties of liquid cargo. It also covers safety rules specific to tank vehicles, such as weight distribution and handling high center of gravity, and the effects of surge on control and stability.

The CDL Tank endorsement assessment does not involve a skills or maneuvers test. It's a written examination that focuses on knowledge related to tank vehicles. Topics include inspecting tank vehicles, understanding weight distribution, handling bulk packages, and managing high center of gravity. Practical driving skills are assessed during the general CDL skills test, not the Tank endorsement test.

Drivers with a CDL Tank endorsement are subject to federal regulations, which include maintaining a logbook, adhering to hours of service rules, and passing regular drug and alcohol tests. Additionally, certain hazardous materials may require a Hazmat endorsement. It's also important to note that each state may have its own additional requirements or restrictions for CDL Tank endorsement holders.

No, a valid CDL Tank endorsement is required to transport liquid or gaseous materials in a tank vehicle. This includes any commercial vehicle designed to transport any liquid or gaseous materials within a tank or tanks having an individual rated capacity of more than 119 gallons and an aggregate rated capacity of 1,000 gallons or more.

Yes, a CDL Tank endorsement can be added to your current Commercial Driver's License. You don't need to apply for a new license, but you will need to pass the Tank Vehicles knowledge test. Once you pass the test, the endorsement will be added to your existing CDL. Always check with your local DMV for specific procedures and requirements.

Yes, there are specific regulations and prerequisites in place for handling hazardous materials with a CDL Tank endorsement in West Virginia. These include passing a written exam, undergoing a background check, and obtaining a Transportation Worker Identification Credential (TWIC) if applicable. Additionally, drivers must follow federal regulations regarding the transportation of hazardous materials and adhere to any additional state-specific requirements.