Can the Bankstown and Hurstville lines be converted from DD to Metro operation "overnight" ?
Can these lines be:
* fitted with trainstops and ATO at the same time? Like London Jubilee Line.
* does the overhead stay at 1500VDC with the overhead at the same height? Do the Metro pantographs handle both existing and future Metro only OHW heights (if different) ?
* do the platforms have no need to be cutback or widened (or raised or lowered) to suit differences in the height and width of the Metro trains ?
* do the platforms need to be extended for longer than 8-car Metro trains ? (A problem at Belmore and Sydenham)
Otherwise, do these lines have to be closed down for say 12 months to perform the conversion. Like Adelaide 25kV.
Can DD and Metro continue to share any lightly used lines ? This enables rolling stock on the common line(s) to be borrowed for use on the Metro in times of heavy traffic, something that is impossible and wasteful with Total Breaks Of Gauge.