page_title: Australian railway signalling
section_title: Victorian Two Aspect Signalling
hierarchical_section_title: Australian railway signalling / Victoria / Victorian Two Aspect Signalling
caption_attribution_description: English: Diverge Right VIC
context_page_description: Australian railway signalling varies between the states of Australia as each railway was established under the different colonial governments with separate legislation. As with the notorious situation of having different gauges, there are differing signal systems. New South Wales signalling systems generally follow British precepts, however American influence has increased somewhat since the 1990s. The Victorian Railways use Speed Signalling. This can cause confusion where the systems meet. For example, in New South Wales, Green-over-Red means 'Caution', indicating the next signal is at 'Stop'.
  In Victoria that same aspect, Green-over-Red, means 'Clear Normal Speed', indicating the next signal is anything but at 'Stop'. On the main south line from Sydney, Single Light Colour Light signals are now exclusively used from Spring Creek bridge to Albury on the Victoria border. This forms a buffer zone between the areas giving conflicting signal indications. Gradually the remaining Upper Quadrant signals are being replaced by Single Light Colour Light signals.
  South Australia uses two primary forms of signalling.
context_section_description: Two aspect signals display route diversions in an unusual way (by modern standards). Normally two or more signal heads are placed on the same mast (this can often mean one is placed above the other; in which case the upper signal refers to the leftmost route, and the lower to the right most route) and the route they correspond to is designated by the signalling diagrams of the track section. Only one of these signal heads can be given any indication (other than red) at a time.
  Two aspect signalling also makes use of the "Warning" and "Proceed" repeaters mentioned in the Three aspect section, but normally these signals will be used on the border between the two sections, to give drivers additional warning when they are entering 3 aspect territory. The use of these signals today is assumed to be extremely limited, as there is very little evidence of their existence anywhere in the network; despite their continued existence in the rulebook.
caption: An example of a Diverge Right Signal from Victoria
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