What authority is needed to occupy a secondary track?

To occupy a secondary track, the essential authority required is proper signal indication or permission from the block operator. This reflects standard operating procedures that ensure the safety and coordination of train movements on the railroad. Proper signal indications provide a visual confirmation that the track is clear and safe for entry, while obtaining permission from the block operator further confirms that the necessary conditions have been met, minimizing the risk of collisions or accidents.

This approach fosters effective communication between train crews and the control center, ensuring everyone involved is aware of track usage. In contrast to other options, relying solely on verbal permission from a yardmaster or assuming no authority is needed does not align with safety protocols, as they are insufficient to ensure a secure environment on the tracks. Moreover, while obtaining permission from the dispatch center could be relevant in some contexts, it does not replace the need for clear signaling or specific permissions related to track occupancy.