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.

A drain valve is opened to remove the water and oil from the tank.

The water and oil are siphoned out of the tank.

A drain valve is opened to remove the water and oil from the tank.

The water and oil are removed automatically as the brakes are used.

A sponge is used to soak up the water and oil.

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.

Prevent the air compressor from overheating

Prevent the front brakes from being used on ice

Prevent the brakes from being used if downshifting would be more effective

If the low pressure warning signal activates while you are driving, it is important that you safely exit the roadway as soon as possible and park your vehicle. If the air pressure gets too low, the brakes will no longer work well enough for you to stop safely.

Exit the road and park as soon as safely possible.

Put on your hazard lights and continue driving.

A dual air brake system is made up of two separate air brake systems. The systems share a single set of brake controls, but each has its own air tanks, hoses, and lines.

Each system has separate air tanks, hoses, and lines.

The systems share air tanks, but each has its own separate hoses and lines.

Each system uses the same lines and hoses.

One system is the main braking system and a second system is ready to be used if the first one fails.

Texas Driver's Examination

Air Brakes #1

FREE Air Brakes Endorsement Test Online | Texas 2024

Train for FREE online with our Texas 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 TX 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.

Number of Question 25

Passing Score 20

Number of Tests 22

FREE Air Brakes Endorsement Test Online | Texas 2024

1 . How is water and compressor oil removed from the bottom of an air storage tank?

2 . How many air storage tanks are used in an air brake system?

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

4 . What does ABS do?

5 . If the low pressure warning signal activates while you are driving, you should:

6 . In a dual air brake system:

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