What is required when a train is moving in the opposite direction from which the block was entered?

When a train is moving in the opposite direction from which the block was entered, it is crucial to proceed at restricted speed until the leading wheels have passed the next governing signal. This requirement is in place for safety reasons, as it allows the engineer to carefully assess the track conditions and any potential obstructions that may be present ahead.

Restricted speed enables the train to stop within half of the sight distance, which is particularly important when the train is making an unexpected movement in reverse or entering a block from an unexpected direction. By adhering to this speed limit, the crew ensures they have sufficient time to react to any hazards, such as other trains, maintenance work, or any changes in track signals.

This practice underscores the importance of signal adherence and situational awareness in railroad operations, promoting both safety and efficiency while navigating through potentially complex situations on the tracks.