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| Re: M to West 4th on Weekends/Late Nights (1357591) | |||
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Re: M to West 4th on Weekends/Late Nights |
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Posted by Michael549 on Sat Jun 27 11:11:12 2015, in response to Re: M to West 4th on Weekends/Late Nights, posted by Dyre Dan on Sat Jun 27 09:52:34 2015. I believe the idea is that in order to allow M-trains to terminate there (say when there is a weekend G.O. on the L-train) without blocking F-trains traveling in either direction.The middle track at the Whitehall Street station allows R-trains to continue to Brooklyn unimpeded, even when weekend G.O.'s send a rare E-train, or a more usual W-train, etc. to terminate at that station. Since the 57th Street-Sixth Avenue station only has two tracks, a central platform, and a diamond crossover switch "south" of the station - an arriving M-train has to use a track that an arriving F-train will be traveling on within a few minutes. (The usual practice of the F-train is to use the 63rd Street Tunnel.) If such an M-train were to develop a problem (it can't move for some reason) the following F-train (in either direction) now has a major problem. Trains usually can not "back up" unless the following traffic has been cleared. The 57th Street-Sixth Avenue does not have flexibility in this scenario that other "short-turn" or "mid-line" terminals have. Think about it, the E-trains that terminate at Hudson Terminal-WTC in no way hamper the movement of A and C trains. Mike |
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