FREE Air Brakes Endorsement Test Online | Idaho 2024

Train for FREE online with our Idaho 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 ID Class A/Class B driver license in 2021, practice as much as.. Read More

Train for FREE online with our Idaho 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 ID 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 . Why do large vehicles use air brakes?

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

2 . Once the air tanks are at an air pressure level of 125 psi, the air compressor governor will:

An air compressor governor will stop the compressor from pumping air once the air tanks are at an air pressure level around 125 psi. This air pressure level is referred to as the "cut-out" level.

3 . In a dual air brake system, if one air system is very low on pressure:

In a dual air brake system, either the front or rear brakes will not be fully operable if one of the air systems gets too low on pressure. If the air pressure in either tank gets too low while you are driving, you should exit the road and park as soon as possible.

4 . Air brakes use ____ to function.

Air brakes function through the use of compressed air.

5 . Manual air tank drains should be:

Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Manually operated air tank drains must be opened daily to remove this build-up.

6 . In a dual air brake system, air pressure should build from 85 to 100 psi within ____ seconds.

When inspecting a vehicle with a dual air brake system, you should wait for air pressure to build from 85 to 100 psi in both the primary and secondary systems. This should take about 45 seconds.

Wait, before you go

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