Describe a “switch” in railroad terminology.

In railroad terminology, a "switch" is a device that directs trains from one track to another. It functions by allowing the rails to move in such a way that a train can either continue on its current path or be diverted onto a different track. This is crucial for rail operations, as it enables the management of rail traffic, facilitating the movement of trains across complex networks of tracks.

The design of a switch includes points, which are movable rails, and a frog, which is the part of the switch where the two rails cross. Properly functioning switches enhance operational efficiency, ensuring that trains can navigate junctions and yards safely and effectively. Understanding this mechanism is vital for locomotive engineers, as it plays a crucial role in train routing and scheduling.