What confers superiority to a train in Single Track 251?

In the context of Single Track 251, the superiority of a train is determined by the direction conferred by a train order. When operating on single track lines, managing the flow of train traffic is essential to ensure safety and efficiency. The train order establishes which train has the right to proceed on the track, and this authority is typically given based on schedules, conditions, and the operational plan in place.

When a train order specifies a superior status, it informs train crews of their rights to use the single track, meaning they can proceed while another train may need to wait or take action to clear the line. This hierarchical functioning, established through train orders and adherence to operating rules, ensures organized train movement in circumstances where physical track capacity is limited.

Attributes like the speed, length, or weight of the cargo do not determine superiority in this context; rather, adherence to the established orders takes precedence to maintain safety and proper train operation.