Really ! saving up a surplus capacity of 30tph just for Sunbury...The point is that the Melton line, which is needed ASAP, will share this capacity with the Sunbury line. It also seems that the Wyndham Vale line may also run through the Metro Tunnel. Squeezing the airport line in that is not a good idea. Part of the point of the Metro Tunnel is to relieve the strain on the Northern Loop, where three lines meet. Having the airport line, as well as the Melton, Wyndham Vale and Sunbury lines all competing for the Metro Tunnel seems like a recipe for disaster. The airport line is the last line where you want regular disruption, since this will potentially have a knock-on effect to airlines who continue to wait for late-running passengers.
While access to more of Melbourne is an admirable component of running airport trains through the Metro Tunnel, I would argue stopping at Southern Cross and Sunshine will ensure that virtually all people can access the airport line with a maximum of 1 change of trains.
Everybody wants to share. I get that, but be realistic.
Current: Melton 5tph + Wyndham Vale 10tph +Sunbury 9ph = 24tph
Squeezing those 3 together on today's
volumes is damn tight. Flying cross overs, the lot.
Absolutely no chance of managing the expected future numbers. Double the above easy.
Maybe Sunbury + Melton might fit, but WDV no way Jose.
I never suggested Airport + Melton + WDV + Sunbury. Clearly that will not fit. Hence 2 pathways will be required.
That begs the question why MARL instead of Melton to share with Sunbury ?
1. MARL has money & timeline committed. Melton sparks does not
2. Melton sparks has to cross the stream to get to Sunbury/MM1 line (but not fight the WDV line).
A spaghetti nightmare. Under/over/tunnels ouch ouch ouch !!!!
and "regular disruption" ? - an absolute crock when no other excuse works, and is a very low opinion of the new MM1 line.
What happens when the roof falls in on an exclusive MARL tunnel ? or the bridges over the Maribyrnong collapse ?
Reminds me of the disaster plan back at the old Telecom data centre.
"If Atom bomb hits here, we are backed up in Sydney". My response - who gives a F*** about phone bills, the world is stuffed.