To establish a route, the Tower Operator should?

Establishing a route as a Tower Operator typically involves using specific controls to define the path that trains will take. When the correct option suggests pushing the Entrance and Exit buttons for the desired route, this reflects the operational process of selecting and confirming the route within the signaling system. These buttons are designed for this purpose, allowing the operator to indicate the desired entry and exit points for the trains.

This step is usually critical because it directly affects the routing of trains in a safe and efficient manner. It is a standard procedure that ensures the system is activated correctly to manage train movements according to established protocols and safety regulations.

In practical terms, pushing these buttons allows for the correct signaling across the relevant sections of track, indicating to both the signaling systems and relevant train crews how to proceed. This alignment is essential for ensuring trains operate safely and without conflicts on their routes.