https://upload.wikimedia.org/wikipedia/commons/d/de/Passenger_rail_services_in_Australia_en.png
https://en.wikipedia.org/wiki/Trans-Australian_Railway Eventually, there could be a standard gauge continuous line from Sydney to Perth. Two freight & 2 passenger parallel tracks. Other gauges could still remain intact.
http://www.railpage.org.au/railmaps
https://en.wikipedia.org/wiki/Sydney%E2%80%93Brisbane_rail_corridor
A line from Brisbane to Alice Springs would be quite beneficial, as would a line from Cairns to Darwin.
https://digital.atlas.gov.au/datasets/digitalatlas::railway-lines/about
