What is displayed at the End of Authority on the PTC screen?

What is displayed at the End of Authority on the PTC screen?

• A. Red Track Line only
• B. Red Hash Box only
• C. Red Track Line and Red Hash Box
• D. Blue Hash Box

Answer: (C)

End of Authority is shown with both a red track line and a red hash box. The red track line marks the limit of the train’s authorized movement along the track, while the red hash box marks the exact point where that authority ends. Having both cues gives a clear boundary and the precise endpoint, which is crucial for safe operation. A blue hash box represents something else on the screen, not the End of Authority.

End of Authority is shown with both a red track line and a red hash box. The red track line marks the limit of the train’s authorized movement along the track, while the red hash box marks the exact point where that authority ends. Having both cues gives a clear boundary and the precise endpoint, which is crucial for safe operation. A blue hash box represents something else on the screen, not the End of Authority.