If used and maintained properly, air brakes are a safe and effective way to stop large, heavy vehicles.

Air brakes are very effective systems.

Other brake systems squeak too loudly.

Air brakes are very effective systems.

Other braking systems are hard to come by.

Any vehicle with air brakes must be equipped with a low air pressure warning signal.

Is required on vehicles with air brakes.

Is not recommended on vehicles with air brakes.

Is required on vehicles with air brakes.

Is optional on vehicles with air brakes.

In an air brake system, the air tanks must be periodically drained to remove accumulations of water and compressor oil. If water is not removed, it could freeze in cold weather and cause brake failure.

Water accumulations freezing and causing brake failure.

Too much air collecting in the tanks.

An air brake system has a safety relief valve, which releases air from the tanks if the pressure gets too high. If the valve must operate, something in the system is wrong and should be addressed by a mechanic.

There is something wrong with the brakes.

Air Brakes Endorsement Test | Missouri 2024 #2

Train for FREE online with our Missouri 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 MO Class A/Class B driver license in 2024, 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

Air Brakes Endorsement Test | Missouri 2024 #2

1 . Why do large vehicles use air brakes?

2 . The leakage rate for a single vehicle with air brakes should be no more than ____ in one minute during a static leakage test.

3 . A low air pressure warning signal:

4 . Failing to drain air tanks could result in:

5 . Vehicles equipped with Anti-Lock Braking Systems (ABS) have ____ malfunction lamps to indicate when the ABS is not working.

6 . If the safety relief valve in the air brake system releases air:

Search the best driving school in your neighbourhood

Wait, before you go