Which is a valid method to determine that a train has arrived or left before occupying the main track?

• A. Direct communication with a crew member or RTC
• B. Visual estimation
• C. Radio to dispatcher only
• D. Timetable check only

Answer: (A)

Before occupying the main track, you need positive confirmation of the train’s status from the person directly involved. Direct communication with a crew member or the Rail Traffic Controller provides a clear, real-time acknowledgment that the train has arrived or left the block, so you can protect the main track accordingly. This two-way check eliminates guesswork and ensures both sides understand the exact status and location, which is crucial for preventing collisions.

Other methods fall short because visual estimation can be fooled by distance, weather, or obstructions; a radio message to the dispatcher alone may not yield a direct, mutual confirmation of the specific train’s occupancy status; and a timetable check only reflects planned times, not actual, current occupancy.