PTS - Personal Track Safety Safety Critical Communications Flashcards

When a lookout gives the warning signal, what must all workers in the track do FIRST?

Answer: Stop work immediately and move to a place of safety

On receiving a warning signal, all workers must immediately stop work and move to a designated place of safety without waiting for further instruction.

Which communication method takes priority when verbal radio contact cannot be established with a train operator?

Answer: Flagging procedures with the correct flag color

Flagging procedures using the correct flag color are the approved fallback method when radio contact with a train operator cannot be established.

A worker receives conflicting instructions from two supervisors simultaneously. What is the correct action?

Answer: Stop work, seek clarification, and confirm one clear instruction before proceeding

Conflicting instructions create an ambiguous and unsafe situation; work must stop and a single clear, confirmed instruction must be obtained before proceeding.

What is the purpose of a 'repeat-back' (read-back) in track safety communications?

Answer: To allow the sender to correct any misunderstanding before the receiver acts

A read-back allows the original sender to verify the message was correctly received and understood, preventing errors from being acted upon.

At what point is it safe to resume work after a warning signal has been given?

Answer: When the lookout gives the all-clear signal and the line is confirmed safe

Work can only resume after the designated all-clear signal is given by the lookout, confirming the line is safe.

Why must radio channels used for track safety communications be kept free of non-essential traffic?

Answer: To ensure critical safety messages are heard without delay or interference

Non-essential radio traffic can mask or delay critical safety messages, potentially preventing workers from receiving life-saving warnings in time.

A lookout's radio fails during a possession. What must happen before track work continues?

Answer: An alternative means of communication must be established and confirmed before work resumes

A functioning communication system for the lookout is a prerequisite for safe track work; an alternative must be verified before any work can continue.