Mixed Deck — All PTS Topics Flashcards

A Lookout must NOT be given any other duties while acting as a Lookout because:

Answer: Split attention could cause a failure to detect or warn of approaching trains

The Lookout role demands undivided attention so that no approaching train is missed.

What is a 'train approach warning' in PTS terminology?

Answer: Advance notice provided to roadway workers that a train will enter or is approaching the work area

A train approach warning is advance notice given to workers — via lookout, radio, or signal device — that a train is approaching so they have time to clear the track.

What should a COSS do if a designated position of safety becomes compromised during the work (e.g., blocked by equipment)?

Answer: Immediately suspend work, reassess the safe system of work, identify a new position of safety, and rebriefed all workers before allowing work to resume

If a position of safety is compromised, work must be suspended immediately and the safe system of work revised to identify and brief workers on a new, adequate position of safety.

What should a worker do if they are unsure whether a line has been blocked for safe working?

Answer: Ask the COSS to confirm possession before entering

Any uncertainty about track possession must be resolved by confirming with the COSS before any worker enters the track area.

When a track worker witnesses a near miss, what should they do first?

Answer: Inform the COSS and complete an incident report as soon as possible

Near misses should be reported to the COSS immediately and documented as soon as practicable so that risks can be assessed and controlled without delay.

When working in a curve or at a location with restricted sightlines, which additional safety measure is most important?

Answer: Posting a flagger or lookout at a position that provides adequate advance warning

Restricted sightlines require a lookout or flagger positioned to see approaching trains early enough to provide the required advance warning time before they reach the work zone.

What does the term 'cess' refer to in the context of PTS?

Answer: The area outside the rails used as a walkway or refuge

The cess is the area alongside the track, outside the running rails, used as a walkway and initial refuge.

The term 'engineering possession' means that:

Answer: Responsibility for a section of line has been formally transferred from the signaller to the Engineering Supervisor

An engineering possession formally hands control of a defined track section from the signal operator to the Engineering Supervisor for the duration of the work.

What should a COSS do if they are uncertain that a verbal message from the signaller has been fully understood?

Answer: Request the signaller to repeat the message and use three-part communication to confirm accuracy

If any doubt exists about a received message, the COSS must ask for it to be repeated and use three-part communication to verify accuracy before acting on it.

What is the primary purpose of the 'cess' alongside a railway line?

Answer: To provide a safe walking route for staff and to assist with drainage.

The cess is the area to the side of the track, beyond the ballast shoulder. Its main functions are to provide a safe place for track workers to walk and stand clear of passing trains, and to act as a channel for water drainage away from the trackbed.

When communicating a line blockage to a train controller, which information should be given FIRST?

Answer: The precise location of the blockage

Location is the most critical piece of information for a train controller to act safely on a line blockage report, as it determines the immediate risk zone.

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.

When releasing track protection after an emergency, what must occur BEFORE trains are permitted to move over the affected section?

Answer: An authorized inspection confirming the track is safe and all workers and equipment are clear

An authorized person must inspect the track and confirm it is safe and fully clear of workers and equipment before train movements are permitted.

What hazard is most associated with working in the 'six-foot' on a multi-track railway?

Answer: Being struck by trains on adjacent tracks traveling in either direction

The six-foot is the space between two sets of running lines, and workers there face risk from trains passing at high speed on both adjacent tracks.

After placing detonators for emergency protection, what is the minimum safe distance you must position yourself from them while waiting to display a hand danger signal?

Answer: 30 metres

For your own safety from the exploding detonators, you must move at least 30 metres away from them after they have been placed. From this position, you can safely display a hand danger signal to the approaching train.

What does the term 'bonding' mean in the context of railway electrification safety?

Answer: Electrically connecting conductive elements to ensure they are at the same voltage potential, preventing dangerous potential differences between components that workers may touch simultaneously

Bonding connects metallic structures to a common earth potential, preventing dangerous voltage differences that could cause electrocution if a worker simultaneously touches two differently-potentialled objects.

Who has the authority to remove a blue flag that has been placed to protect roadway workers?

Answer: Only the workers who placed it

FRA regulations require that only the roadway worker or work group who placed a blue flag may remove it, ensuring workers cannot be endangered by unauthorized removal.

What is the role of an IWA (Individual Working Alone) in PTS safe systems of work?

Answer: A competent person authorised to protect themselves and up to three others while working on or near the line

An IWA is a person competent to implement lookout protected working to protect themselves and up to three others (four workers total) while working on or near the line.

What is the primary additional hazard when working in a tunnel compared to open track?

Answer: Escape options are severely restricted and aerodynamic effects from passing trains are amplified

In a tunnel, workers cannot step well clear of the track as they might in the open — escape is limited to designated refuges. Aerodynamic pressure waves from passing trains are also far stronger inside tunnels, posing a risk of being knocked over or struck by debris even from a train passing through a neighbouring tunnel.

What is the significance of the 'approach distance' versus the 'no-go zone' in electrified rail safety?

Answer: The approach distance requires caution; the no-go zone prohibits entry without isolation

The approach distance is a caution zone requiring awareness and precautions, while the no-go zone is a hard boundary that cannot be entered without electrical isolation.