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| Re: Put-Ins/Pull Outs (715582) | |||
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Re: Put-Ins/Pull Outs |
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Posted by Gerry6309 on Fri Dec 5 13:53:18 2008, in response to Put-Ins/Pull Outs, posted by BusRider on Fri Dec 5 10:43:33 2008. There is a question of semantics here. A train which "lays-up" is taken out of service and stored. A train which "lays-over" is sent back in service in the opposite direction. The definition is important since a train laying over at Court Sq. will change ends on the track it arrives on and use a crossover south of the station, while one laying up at the same location will run light to Jamaica Yard.A layover or lay-up at Queensboro Plaza will use the center track on the Astoria line, the layup will go further north, while the layover will clear the switch entering and change ends. Kings Highway on the F has a center track for layovers with crossovers both north and south of the station. Lay-ups are unlikely due to the proximity to the yards at Coney Island. An A from the south could cross over north of 59th St., but would impede southbound A and D trains in doing so. An A from the north cannot turn at 59th. B & D trains from the south can turn on the center platform at 145th. Trains rom the Bronx must unload and lay over on a center track south of the station, then cross to the northbound to go back. Laying over at West 4th St. seems to be a questionable proposition at best. There are crossovers north of the station but any change of direction requires an adverse move on a busy track. A northbound could turn near 42nd St. while a southbound could turn at 2nd Av. Your question about the R needs to specify where the train is coming from since both locations are near the middle of a very long line. You can answer a lot of your own questions by checking out the track maps at nycsubway.org |
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