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| Re: Old LIRR Rockaway Beach Branch (1252680) | |||
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Re: Old LIRR Rockaway Beach Branch |
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Posted by SelkirkTMO on Wed Oct 9 20:21:08 2013, in response to Re: Old LIRR Rockaway Beach Branch, posted by italianstallion on Wed Oct 9 19:45:26 2013. As an artifact of the times when key-by was still permitted, there are several advantages. One is entering stations. If you're following your leader who is leaving the station and they continue to keep pulling away from you rather than you catching up with them, then you can enter a station on a red knowing that you can stop. In fact the IND did this on "station time" signals which would clear as a train was entering as another one was leaving.The other advantage is tightening up behind your leader in the case of congestion, stopping two car lengths away. It meant that when your leader started moving, you could also because you were in the same block with them, ever mindful that at some point, they'd have to stop and thus you kept your distance. Keying by did allow a little more capacity and for your follower to at least pull into the station behind you. |
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