Some air brake systems include an alcohol evaporator. The evaporator introduces alcohol into the braking system to prevent the formation of ice, which can cause damage.

Used to add alcohol to braking systems to prevent items from freezing.

Only allowed on vehicles carrying hazardous materials.

The parking brake in a vehicle with air brakes should be used every time the vehicle is parked.

Used whenever you park your vehicle.

Set when driving in bad weather.

Brakes out of adjustment will fade before those that are properly adjusted. Brake adjustment must be checked frequently to help prevent brake issues.

Cause some of the brakes to overwork and malfunction.

In an air brake system, the air compressor governor controls when the air compressor pumps air into the storage tanks. It stops pumping if the pressure in the tanks becomes too high, and begins pumping if the pressure becomes too low.

It stops the compressor from pumping air.

It turns on the air compressor.

Compressed air in an air brake system usually has a certain amount of water and oil in it. This can harm the system if allowed to accumulate. Air tanks have drain valves to aid in removing water and oil from the compressed air.

Are helpful to remove water and oil from the air tanks.

Should not be used in cold weather.

Are helpful to remove water and oil from the air tanks.

Are used to move air to the brakes.

Air Brakes Endorsement Test | South Dakota 2024 #2 Page 3 of 4

Train for FREE online with our South Dakota 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 SD 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 | South Dakota 2024 #2 Page 3 of 4

13 . Alcohol evaporators are:

14 . The parking brake should be:

15 . Brakes out of adjustment will:

16 . What does the air compressor governor do?

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

18 . Air tank drains:

See the exact questions that will be on the 2024 DMV exam.

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