PTS - Personal Track Safety Safe Systems of Work Flashcards
7 cards from real PTS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 PTS - Personal Track Safety Safe Systems of Work flashcards as text
What must a COSS confirm before establishing a safe system of work at a new worksite?
Answer: That the limits of the safe system have been agreed and are understood by all workers
The COSS must establish and communicate the exact limits of the safe system so every worker knows where they may work safely.
If a train approaches outside its booked path while workers are on site, the first priority is to:
Answer: Ensure all workers are clear of the line before the train passes
Worker safety takes absolute priority; everyone must be in a place of safety regardless of whether the train movement was expected.
Which of the following would INVALIDATE a Lookout-Warned safe system?
Answer: Workers using powered tools that produce noise masking the Lookout's warning
If noise from tools prevents workers from hearing the Lookout's warning, the system cannot function and must be replaced with a higher level of protection.
A 'Line Blockage' safe system guarantees worker safety by:
Answer: Arranging for all train movements on the relevant line to be suspended
A Line Blockage suspends train movements through the block section containing the worksite, making the line train-free.
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.
Workers must NOT foul the line (step onto or over the running rail) unless:
Answer: A safe system is in place that specifically permits it
Fouling the line is only permissible when a valid safe system explicitly covers that activity.
What record must the COSS keep to demonstrate that the safe system of work was properly established?
Answer: A written record including worker briefing, system limits, and times
The COSS must maintain a written record of the briefing, the limits of the safe system, and the times it was established and closed.
How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy
Sources & references
Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy
- nsar.co.uk — Test delivery, time limit, renewal · verified Oct 2026
- info.railsentinel.co.uk — Fees, eligibility · verified Oct 2026