What is the primary function of a Home signal?

The primary function of a Home signal in rail operations is to authorise train departure from a station or a specific location on the rails. It plays a crucial role in ensuring safe and efficient train movements by indicating when a train is allowed to leave a platform or a siding, thereby providing a clear signal to the train driver.

Home signals are positioned strategically to ensure they are visible to approaching trains, and their aspects inform the driver whether to proceed, stop, or prepare to stop, depending on the signal displayed. This function is vital for maintaining the safety of the rail network, allowing only safe train movements based on the current operational status.

While other signals may indicate speed limits, risks at level crossings, or weather conditions, these do not encapsulate the primary purpose of a Home signal. The Home signal's primary objective is focused on the management of train departures, ensuring that operations run smoothly and safely.