Ontario Air Brake Practice · Question
The foot valve (treadle valve) in an air brake system directly controls the air pressure to what components?
The foot valve, or treadle valve, controls the amount of air pressure directed to the service brake chambers on the vehicle, proportioning braking effort to dri
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Question: The foot valve (treadle valve) in an air brake system directly controls the air pressure to what components?
Answer options: ✅ The service brake chambers.
- The spring parking brake chambers.
- The trailer air tank.
- The air dryer.
Correct answer: The service brake chambers.
Explanation: The foot valve, or treadle valve, controls the amount of air pressure directed to the service brake chambers on the vehicle, proportioning braking effort to driver input.
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