PTS PTS - Personal Track Safety Positions of Safety 4 — Questions and Answers
Question 1: Under PTS rules, what is the primary responsibility of a lookout assigned to protect workers?
- To record the time and speed of all passing trains
- To warn workers of approaching trains with enough time for them to reach a position of safety (Correct answer)
- To communicate with the train engineer directly via radio
- To physically escort each worker to their designated safe position
Correct answer: To warn workers of approaching trains with enough time for them to reach a position of safety
The lookout's primary duty is to give workers timely warning so they can reach a position of safety before any train arrives.
Question 2: If a lookout loses sight of the track in one direction due to a passing train, what must happen?
- Work may continue as the passing train itself provides protection
- All work must stop and workers must remain in their positions of safety until full observation is restored (Correct answer)
- A second lookout must be immediately dispatched to cover the blind direction
- Workers may use their own judgment about when to return to the track
Correct answer: All work must stop and workers must remain in their positions of safety until full observation is restored
When a lookout's line of sight is blocked, the protected zone is compromised, so workers must stay in their positions of safety until visibility is fully restored.
Question 3: Which of the following best describes the 'dynamic envelope' of a train?
- The speed range within which a train can safely operate
- The three-dimensional space swept by a train and its load including sway and overhang (Correct answer)
- The area in front of a train that is electronically monitored for obstacles
- The schedule window during which a train is authorized to use a particular section of track
Correct answer: The three-dimensional space swept by a train and its load including sway and overhang
The dynamic envelope is the total volume of space a train occupies in motion, including all movement due to sway, tilt, and equipment overhang.
Question 4: A track worker is the only person at a work site and needs to perform a brief task near the track. What does PTS require?
- Solo workers may use their own judgment if the task takes less than two minutes
- A single worker may not work alone near live track without a designated lookout (Correct answer)
- The worker must contact the control center and obtain verbal permission
- The worker must complete a solo work assessment form before starting
Correct answer: A single worker may not work alone near live track without a designated lookout
PTS prohibits solo workers from being near live track without a lookout because there is no one to warn them of approaching trains.
Question 5: What is the significance of a 'line of sight' requirement for a lookout?
- It determines the maximum number of workers a single lookout can protect
- It ensures the lookout can see far enough to give workers adequate warning time (Correct answer)
- It specifies the minimum brightness of the lookout's warning signals
- It describes the required angle at which the lookout must face the oncoming train
Correct answer: It ensures the lookout can see far enough to give workers adequate warning time
Adequate line of sight ensures the lookout spots a train early enough that all workers can safely reach their positions of safety before the train arrives.
Question 6: When working in a tunnel, what additional challenge affects positions of safety?
- Radio communications are blocked, preventing coordination
- Air pressure from trains in tunnels is more intense and positions of safety may need to be further from the track (Correct answer)
- Lighting conditions make it impossible to judge train speed accurately
- Tunnel acoustics cause train sounds to echo, confusing the direction of approach
Correct answer: Air pressure from trains in tunnels is more intense and positions of safety may need to be further from the track
Enclosed tunnel walls amplify the pressure wave ahead of and beside a train, extending the danger zone and requiring greater clearance distances for safe positions.
Question 7: A worker hears the lookout's warning but is between two closely spaced tracks with trains approaching on both. What is the safest action?
- Lie flat between the rails of the nearest track
- Immediately move clear of both tracks to a position of safety between or beyond them (Correct answer)
- Signal the approaching trains to stop by waving both arms
- Crouch and wait for one train to pass before moving
Correct answer: Immediately move clear of both tracks to a position of safety between or beyond them
The only safe action is to clear both tracks entirely and reach a position of safety outside the dynamic envelopes of all moving trains.
PTS PTS - Personal Track Safety Positions of Safety 4
Under PTS rules, what is the primary responsibility of a lookout assigned to protect workers?