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The Atlantic had a good piece recently on the NYC metro system: Why New York Subway Lines Are Missing Countdown Clocks The Atlantic posted:But here’s the truly crazy thing: The only people who know exactly where that train is are on the train itself. The signal-tower operators don’t know; there’s no one in the Rail Control Center who could tell you, because the F isn’t hooked up to the Rail Control Center. Today, for the F train—along with the G, the A, B, C, D, E, J, M, N, Q, R, and Z—the best the system can say is that the train will get there when it gets there. The NYC system is old,and maintaining the legacy systems is expensive. It's clear that modern automation could significantly reduce the complexity and cost of the system, but the implementation is where things get complicated. Do you rip out all the old interlocks and signals and implement a completely automated system (CBTC), or do you try to make more incremental changes (ATS)? Is this compatible with the organizational requirement to keep the trains running all the time? NYC metro is at least trying to do the necessary upgrade work. Compared to what I've read about the DC metro, it could be worse.
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Apr 1, 2016 14:07
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| # ¿ Apr 27, 2024 13:39 |
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