What must a dispatcher ensure when a train is entering the main track at a hand-thrown switch with a locked direction of traffic?

A dispatcher must ensure that the track is clear of opposing movements when a train is entering the main track at a hand-thrown switch with a locked direction of traffic. This is vital for safety, as the presence of opposing movements could lead to a collision. Ensuring that the track is clear helps to prevent accidents and maintains the safety of both the train and the personnel involved.

While other factors are important, such as ensuring signals are set correctly or that the switch is aligned, the primary concern in this scenario is verifying that no other trains are on the track that could pose a danger. This reflects the dispatcher’s responsibility to facilitate safe train movements within their jurisdiction, particularly at critical points like hand-thrown switches, where the potential for danger increases.