gantry signals
Goulburn was all semaphore signals, controlled from 4 signal boxes until 1979, when it was re-signalled. A new power signalbox was built to control Goulburn and Joppa Junction. In 2009 control of Goulburn interlocking was transferred to Junee control centre, and Goulburn box was closed.
Until the Goulburn resignalling, colour light signals were always mounted roughly around train windscreen height, to keep them within easy sight of train drivers. Gantry mounted signals were slung below the gantry to achieve this. The Goulburn resignalling was the first time in NSW (that I know of) that colour light signals were mounted above the gantry, well above train height. Apparently this was to allow for future electrification, which had been proposed in the early 1970s. The practice continued elsewhere on the main south and other lines, although the current reason is to allow for future double stacking of containers.
gantry signals
Goulburn was all semaphore signals, controlled from 4 signal boxes until 1979, when it was re-signalled. A new power signalbox was built to control Goulburn and Joppa Junction. In 2009 control of Goulburn interlocking was transferred to Junee control centre, and Goulburn box was closed.
Until the Goulburn resignalling, colour light signals were always mounted roughly around train windscreen height, to keep them within easy sight of train drivers. Gantry mounted signals were slung below the gantry to achieve this. The Goulburn resignalling was the first time in NSW (that I know of) that colour light signals were mounted above the gantry, well above train height. Apparently this was to allow for future electrification, which had been proposed in the early 1970s. The practice continued elsewhere on the main south and other lines, although the current reason is to allow for future double stacking of containers.