|
Probably the only comparative to the NYC Subway is the London Underground. The way the upgrades there were handled was with a rolling programme of signalling and control upgrades with rolling stock upgrades taking place simultaneously. You can test the system in normal running by having the upgraded trains follow in shadow mode like a really decent soak test. Once you've renewed all your stock you switch over to the new system and decommission the old. Pretty much entirely implemented on night and weekend closures. PS I am the OP of the British trainchat thread so thanks for the shout out and great info on North American Bozza fucked around with this message at 14:56 on Apr 1, 2016 |
#
¿
Apr 1, 2016 14:52
|
|
|
|
| # ¿ May 10, 2024 22:48 |
|
|
Warcabbit posted:Pleasure to meet you. The major difference between the two is the London Underground shuts down after midnight, I believe. NYC doesn't sleep. ...I honestly thought that was just a song. How on earth is maintenance done without a period of shutdown? Afraid my knowledge of most metro control systems is a bit lacking compared to my mainline but still, you'd probably have to design, build and test externally in a warehouse somewhere then just do short busts of installation (axle counters instead of track circuits etc so they don't interfere) piecemeal until the whole thing can just be correspondence tested. I'd imagine it'd take you a year of installation to get one route installed like that without weekend shut downs. Still need to invest in a huge amount of rolling stock, not sure how captive the fleets are in NY compared to the Tube where each line has its own discreet stock. Basically you're planning 10 years into the future at least from both a fleet and control perspective, so I can see why that won't find favour with elected officials.
|
|
#
¿
Apr 2, 2016 01:47
|
|