Air Brakes Endorsement Test | Maryland 2024 #2 Page 3 of 4
Train for FREE online with our Maryland 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 MD 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.
13 . What does the air compressor governor do?
In an air brake system, the air compressor governor controls when the air compressor pumps air into the air storage tanks.
14 . To use the stab braking method in an emergency situation, you should:
The stab braking method for emergency stops involves fully applying the brakes until they lock up. The brakes are then released until the wheels start rolling, then the process is repeated.
15 . Before driving a vehicle with air brakes, you should ensure that the ____ come on automatically when air pressure falls below 45 psi.
Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when air tank pressure falls to a level between 20 and 45 psi. You can do this by chocking the wheels and releasing air from the braking system by stepping on and off the brake pedal. Once the pressure levels drop to an unsafe level, the parking brake valve should pop out and spring brakes should come on.
16 . Air brakes are:
As long as the brakes are properly maintained, using air brakes is a safe and effective method of stopping large, heavy vehicles.
17 . Air tank drains:
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.
18 . A low air pressure warning signal:
Any vehicle with air brakes must be equipped with a low air pressure warning signal.
See the exact questions that will be on the 2024 Maryland DMV exam.
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