What does a train need before entering single track?

Before a train enters single track, it is essential to ensure that all opposing trains have cleared the track. This verification is crucial for maintaining safety and avoiding collisions. Single track operations require precise coordination, as only one train can occupy a section of track at a time. If opposing trains are still on the track, it creates a dangerous situation.

In some cases, special procedures exist to manage single track operations, including clearances and communication between dispatchers and train crews. However, prioritizing the clearance of any trains approaching or occupying the single track is a fundamental safety requirement. Verifying that all opposing trains have cleared ensures that a safe environment is established before proceeding. This step helps in preventing accidents and ensuring an orderly flow of train movements.

Other options might sound relevant, such as needing a signal or notifying crews, but the most critical action is to confirm that the track is free of conflicting traffic.