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Front #246

ABTH 10.3D

When a crew member informs the control operator that the authority is released between two specific points, the authority is considered void between those points. Where must the track release begin?


  1. The outer limit of the authority
  2. The last mile post cleared by the rear of the train within the authority
  3. The inner limit of the authority
  4. The intended clearance point of the train within the authority
Back #246
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ABTH 10.3D


Answer: The outer limit of the authority
Feedback:
- This track release must begin at the outer limit of the authority. Because track and time is a bidirectional authority, the train cannot report past a specific point. - The control operator would not know which side of that point the train is occupying.