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| Re: SAS termini questions (126299) | |||
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Re: SAS termini questions |
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Posted by Rail Blue on Sat Aug 13 07:20:36 2005, in response to Re: SAS termini questions, posted by stephenk on Sat Aug 13 05:09:24 2005. Actually, at Morden the trains presently only reverse in 2 of the 3 tracks. The 3rd track is used for trains entering or leaving service. This makes the stepping back operation simpler, as all reversing trains share an island platform. It also means that passengers don't have to swap islands if they miss a train.I'll have to go and see if they still open up trains on both sides on p3/4. I haven't been there for a couple of months. When the Northern line gets its planned capacity upgrade after CBTC is installed in 2011, then probably all 3 platforms will need to be used to reverse the proposed 35tph. Firstly, what's the idea behind it being 35tph? I'd've thought 36tph would have made headways much simpler. Even if all platforms were used to reverse this 35tph, the most efficient way would still have all boarding on p4/5: 1) Train arrives on p1/2. 2) Train arrives on p3/4; train on p1/2 moves beyond station to relay on track 45. 3) Train on p3/4 departs; train on track 45 moves onto p5; train arrives on p1/2. 4) Train on p5 departs; train arrives on p3/4; train on p1/2 moves beyond station to relay on track 45. (repeat stages 3 and 4) |
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