Under what circumstance can a train stop at Roberts Ave. Yard?

A train can stop at Roberts Ave. Yard when it is scheduled to Wayne Junction and is less than three minutes late because this allows for an efficient operation within the railway's scheduling system. If a train is only slightly delayed—less than three minutes—it may be deemed acceptable to stop without significantly affecting the overall schedule or causing congestion for other trains. This is important for maintaining punctuality and adjusting schedules in real-time.

Stopping for passenger requests or when scheduled to other locations like Fern Rock TC, when not specified, typically does not have the same operational priority compared to the established protocols for managing scheduled trains. Therefore, maintaining adherence to precise timing for scheduled routes helps ensure that the train system runs smoothly, allowing for adjustments like a stop at Roberts Ave. Yard within minimal delays.