4 ms·
Flawed by design. There are only 2 sets of tracks instead of 3 or 4 like most cities; in DC, trains can't pass each other except in unusual circumstances. There
by officialchicken 11y ago
Flawed by design. There are only 2 sets of tracks instead of 3 or 4 like most cities; in DC, trains can't pass each other except in unusual circumstances. There are no sidings or passings at stations. They can not run express trains, use skip-stop, etc. As usual, the DC-centric view is that it's a political / will-power issue when the reality is the analog of bandwidth - you can't fit more trains on the track no matter what control "protocol" you use.
- untog 11y agoThe London tube has 2 sets of tracks across most of the network, it doesn't seem to suffer anywhere near the same as DC does.
- cballard 11y ago> you can't fit more trains on the track no matter what control "protocol" you use. This is false, CBTC has greatly increased L train capacity: https://en.wikipedia.org/wiki/Automation_of_the_New_York_City_Subway#Canarsie_Line_CBTC https://en.wikipedia.org/wiki/Automation_of_the_New_York_Cit... The Canarsie line is two-tracked and doesn't have any mechanism for passing besides single-tracking (also, no tail tracks at the Manhattan terminus).
- officialchicken 11y agoL-train capacity was increased due to Sandy renovations of the tracks and switches, not just signal improvements. Same as G.
- Symbiote 11y agoAlmost every metro system has two tracks for the majority of the length. The New York system is very unusual.