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I don't know the first thing about train operations - could someone ELI5 why signal failure is a recurring thing in the UK? After a decade of upgrades the Met
by djtango 5y ago
I don't know the first thing about train operations - could someone ELI5 why signal failure is a recurring thing in the UK?
After a decade of upgrades the Met line suddenly had extremely frequent signal failure (around 2019ish) and ran a service that felt considerably less reliable than 2007 before upgrades began.
Places like Singapore, Hong Kong and Tokyo run like clockwork. I also feel like the DLR runs better but I don't take it often enough to intimately know its failure rates.
Is it just the curse of legacy infrastructure?
- tehbeard 5y agoThe signal/point cabling at new street in Birmingham is the textbook definition of cable gore. Just bundles on bundles snaked alongside track, bulging out of channels meant for them... Is it any wonder there's been a half dozen point or signal failures over the last few weeks leading to significant delays for commuters? To say nothing of how much left over track sections, sleepers, gravel bags and other material are strewn alongside the lines, left for years.
- shapefrog 5y ago> To say nothing of how much left over track sections, sleepers, I am sure I have seen enough lengths of track seemingly discarded along the lines to build entire rail networks.
- inferiorhuman 5y agoI was about to make a comment about the poor rollout of signal upgrades in San Francisco but I checked wiki page about the Metropolitan Line first. Welp. Put succinctly the problem is Thales (nee Alcatel). Curiously DLR (and Jubilee and Northern lines) use the same system.
- spacehunt 5y agoHong Kong has its fair share of signal failures; check out the @mtrupdate Twitter. Also, they are trying to install a new signalling system, and during testing two trains collided: https://www.railjournal.com/signalling/contractors-responsible-hk-collision/ https://www.railjournal.com/signalling/contractors-responsib...