What condition must be met for an assisting train if it operates against the current of traffic in Rule 251 territory?

In Rule 251 territory, when an assisting train operates against the current of traffic, a critical condition for compliance is that the Dispatcher must issue a Form D line 8 to the disabled train. This protocol is essential for ensuring clear communication and establishing safe operating conditions while allowing the assisting train to traverse the section of track that typically would not permit such movement against the direction of the normal traffic flow.

The issuance of Form D line 8 provides the necessary authority for the assisting train to operate in the opposing direction, and it ensures that all parties involved are aware of the situation. This formal communication acts as a safeguard, ensuring that the movements are coordinated and that the train crews are informed of the operating instructions to prevent any potential conflicts or accidents.

To ensure safety and procedural compliance in these scenarios, adherence to this rule is paramount. It mitigates risks associated with operation against regular traffic patterns, which are established for safe and efficient railroad management.