When multiple tracks are involved under rule 251, where can an extra train operate without a running order?

The correct answer is that an extra train can operate without a running order with proper signal indication or permission of the block operator. Rule 251 governs the operation of trains on tracks where there is no designated right of way, allowing for flexibility in how trains might be dispatched. Operating an extra train under this rule requires adherence to signals, ensuring that the movement is coordinated and safe.

This provision underscores the importance of maintaining communication and confirmation of track availability and safety before proceeding. The reliance on signal indications and staff permission is crucial to prevent collisions and ensure that all trains are operating in a synchronized manner on the same track system. This protocol allows for efficient use of the tracks, particularly at times when traffic patterns may be less predictable or during unexpected delays.

A requirement for signal indications or block operator permission emphasizes safety over mere convenience, ensuring that all personnel involved in train operations are aware of the movements occurring on the tracks to mitigate risks.