What is the purpose of interlocking in rail operations?

The purpose of interlocking in rail operations is to ensure proper signal movement sequences. Interlocking is a system used to control the movement of trains through junctions, crossings, and other complex rail configurations. It prevents conflicting movements by ensuring that signals are set in a way that avoids accidents. This means that if one signal is set to allow a train to proceed, the interlocking system will prevent other conflicting signals from being activated simultaneously.

By effectively coordinating the sequence of signal changes and track switches, interlocking systems enhance safety and efficiency in train operations. This feature is critical in busy rail networks where multiple trains may be operating in close proximity to one another. The ability to manage these movement sequences accurately is what primarily defines the role of interlocking systems in rail transport safety and operational protocols.