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Front #35

ABTH 103.7.4

When a constant level of braking is required for long distances, limit the effective brake pipe reduction to ____ psi or less.


  1. 5
  2. 15
  3. 20
  4. 10
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ABTH 103.7.4


Answer: 15
Feedback:
If a brake pipe reduction of more than 15 psi is needed to control train speed, stop the train and inspect to determine the reason.