What is the primary responsibility of the dispatcher during a train's reverse movement within a block?

The primary responsibility of the dispatcher during a train's reverse movement within a block is to verify the absence of opposing trains. This is crucial for maintaining safety and preventing accidents, as a reverse movement can present unique risks. The dispatcher must ensure that the path is clear and that no other train is occupying the same track or block in the opposite direction while the train is moving.

This verification process includes checking for any signals, communicating with train crews, and confirming that all necessary precautions are in place to protect the reversing train from any possible conflicts with other trains. Ensuring the absence of opposing trains provides a safe environment for the train to operate and allows for smooth and efficient handling of train movements within the rail network.