Foundation brakes are used on each wheel of a CMV. The most common type of foundation brake is the s-cam drum brake.

Only on the front wheels of a vehicle.

Only on the rear wheels of a vehicle.

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.

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.

If water and compressor oil are left to build up in an air brake system, the system can be damaged. Air storage tanks are equipped with drains to allow this accumulation to be removed. Manually controlled drains should be operated at the end of each day of driving.

Are necessary for the proper function of the system.

Should take up about 10 percent of the tank.

In an air brake system, the air storage tanks hold compressed air to be used by the brakes. The number and size of air tanks varies among vehicles.

Hold compressed air for the brakes.

Should be drained of excess air after every trip.

Air Brakes Endorsement Test | Missouri 2024 #1

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 #1

1 . Foundation brakes are used:

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

5 . Some water and compressor oil is usually found in the compressed air within an air brake system. The water and compressor oil:

6 . Air storage tanks:

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