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Re: 7 local vs. express

Posted by Broadway Lion on Fri Apr 10 11:08:22 2015, in response to Re: 7 local vs. express, posted by gbs on Thu Apr 9 23:12:41 2015.

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"It's happened to me so many times! The worst is when both an express and local are being held (with holding lights) at Willets Point, and no one will tell the passengers which train will arrive at Main Street first. (They won't even say which one will leave Willets Point first, although that doesn't guarantee a first arrival at Main St!). Apparently they don't want us switching trains for the first one scheduled to arrive at Main, because that may delay service!"

They do not know which one will leave first, and they do not know if one will be held en route. They cannot know, because the tracks at Main are blocked with trains, and they do not know which one will be able to leave first. If the one on the south platform leaves first then it will block all tracks until it is clear. If the one on the north platform leaves first then a local or an express can enter the station depending upon which track is clear, assuming that they always want to bring the express in on the middle track.

Does the dispatcher know which one will leave first? Well d'uh of course he knows which one is *supposed* to leave first, but maybe there is a problem with that train, and so he waits a bit to see if it will be cleared up before sending someone else out first.

Suppose a train is stuck on the middle track, they can let locals in and out, but the express will have to wait until the middle platform is cleared, on until the dispatcher despairs of it being cleared and brings express trains in on say the south track.

So you wait a little while while things sort themselves out. How is this the end of the world.

ROAR

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