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| Re: SAS termini questions (126637) | |||
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Re: SAS termini questions |
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Posted by stephenk on Sun Aug 14 08:17:52 2005, in response to Re: SAS termini questions, posted by Rail Blue on Sun Aug 14 07:25:21 2005. "And IIRC Brixton (London, Vic) was designed for something crazy like 42tph"It takes about 97secs for a train to leave one of Brixton's platforms, and the next train to arrive . So taking into account, trains being able to leave on the NB side track sooner than that, as there is no conflicting movement, then the maximum capacity would be around 42tph. However, when you add green light to door closing time (10-15secs), and the fact that departing headways should be fairly even, then realistically the terminus cannot handle much more than 30tph. It presently handles 30tph, and should handle 33tph after the lines upgrade. Strangely, the lesser used terminus at Walthamstow can actually get a train in and out of the platform in just 90secs. Quite why the slightly more modern Brixton has an inferior run out run in time I don't know! |
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