What is the purpose of the anti-compounding feature in an air brake system?
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ATo maintain equal braking force between all axles
BTo prevent excessive application force when service and spring brakes are applied simultaneously
CTo ensure the spring brakes apply in the event of air pressure loss
DTo prevent the release of parking brakes when air pressure is below 60 psi
✓ Correct answer: B. To prevent excessive application force when service and spring brakes are applied simultaneouslyThe anti-compounding feature prevents the application of both service brakes and spring brakes to the same brake chamber simultaneously. This prevents excessive force that could damage the foundation brake components when both systems are applied at once.
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Theory