System PartsQuestion 9 of 60
Why do heavy vehicles use a dual air brake system?
a.To make the brakes work with less pressure
b.To eliminate the need for spring brakes
c.So that if one system leaks, the other can still stop the vehicle
d.To allow the compressor to run continuously
Explanation
A dual air brake system has two separate air brake systems that use a single set of controls. If one system loses air, the other system can still provide braking to stop the vehicle. Each system typically operates different brakes, giving redundancy for safety.
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Related questions on this topic
- What is the function of the S-cam in a drum air brake?
- Spring brakes on a truck are held in the released position by what?
- What happens to the spring brakes when air pressure drops to a very low level (for example, 20 to 45 psi)?
- In a dual air brake system, before driving you should let air pressure build to at least what level in both systems?
- What is the purpose of the supply pressure gauge in the cab?
- What does the application pressure gauge show?
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