What is the track called from which a train diverts?

The track from which a train diverts is commonly referred to as the "Main Line." The Main Line serves as the primary route for railway traffic, allowing trains to travel between major destinations. Diversions, or switches, can occur at various points along the Main Line, guiding trains onto different tracks or routes based on operational needs.

In railway terminology, other types of tracks also exist, such as switch lines which refer to the specific track configurations that allow trains to change from one track to another, but they are not the tracks from which trains divert themselves. Feeder lines are typically smaller rail lines that connect to the Main Line and serve to bring traffic in, rather than to divert it. Branch lines are secondary lines that diverge from the Main Line to serve localized areas or industries but are not primarily described as the point of diversion.

Understanding the Main Line's role is crucial in comprehending overall rail operations, as it forms the backbone of the train network, influencing how trains are routed and switched.