Imagine starting a central station and finishing in the blue mountains doing the BMT line or doing central to Dubbo on the XPT or the Waratah set train around Sydney going across the harbour bridge
Licensing Issue alongside Track gauge for Training Centre Only NSW/ Interstate trains can run as is in there due to them being 1.435m QLD TAS Western Australia 1.067m Cape Gauge 1.6m Irish gauge VIC SA. The Ideal solution is Quadtrack Dual gauge 1.6m Irish gauge 1.435m Standard and 1.067m Cape Gauge tracks look like this now Diagram of that style of track