FREE Air Brakes Endorsement Test Online | Virginia 2024

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 2021, practice as much as.. Read More

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 2021, 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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1 . An air compressor governor controls:

In an air brake system, the air compressor governor controls when the air compressor pumps air into the air storage tanks.

2 . You must have an air brake endorsement:

You must take an air brakes knowledge test to become licensed to operate a vehicle that is equipped with air brakes, including an air over hydraulic braking system.

3 . 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.

4 . Lights that indicate that anti-lock brakes are not working are:

Vehicles equipped with Anti-Lock Braking Systems (ABS) have yellow malfunction lights to indicate issues in the braking system.

5 . An alcohol evaporator in an air brake system:

Some air brake systems include an evaporator that introduces alcohol into the system. The alcohol can help prevent ice from forming within the system.

6 . 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.

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