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| Sea Wall SLW 09/08/2013 at 15:23 #48172 | |
GW43125
495 posts |
Does anyone know what the priorities are for a signaller if SLW is in force on the Dawlish Sea Wall. (Is it first-come-first-served, right-direction then wrong-direction or by the timetable, or is it something else?) Any help would be appreciated, Thanks in advance. Log in to reply |
| Sea Wall SLW 09/08/2013 at 15:33 #48173 | |
Temple Meads
307 posts |
I usually give priority to trains to London, after that it's first come first served, but I'm not sure of the official procedure.
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| Sea Wall SLW 09/08/2013 at 17:20 #48184 | |
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Jan
906 posts |
It also helps to flight several trains together in one go, especially in the Up direction, where you can make use of the regular signal spacing.
Two million people attempt to use Birmingham's magnificent rail network every year, with just over a million of them managing to get further than Smethwick. Last edited: 09/08/2013 at 17:20 by Jan Log in to reply The following user said thank you: GW43125 |
| Sea Wall SLW 09/08/2013 at 17:34 #48186 | |
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Zoe
252 posts |
Single Line Working is not often used at Dawlish these days due to weather as when the area was resignalled in the 1980s, bi-directional signalling was installed on the Up Main between Dawlish Warren and Teignmouth so if the Down Main is closed then Down trains would now be signalled to use the Up Main without needing SLW. If for some reason the Up Main was closed but the Down Main was open though SLW would still be used and I believe it was last year when there was a landslide near Teignmouth and also overnight earlier in the year due to engineering work.
Last edited: 09/08/2013 at 18:09 by Zoe Log in to reply |
| Sea Wall SLW 09/08/2013 at 18:15 #48189 | |
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GW43125
495 posts |
Zoe- that's exactly what I meant, when the UM is used bi-di as I am running that scenario... seems we're not thinking the same thing. I was asking which trains are supposed to be sent along the line first, what the real way is to do that. Last edited: 09/08/2013 at 18:18 by GW43125 Log in to reply |
| Sea Wall SLW 09/08/2013 at 18:52 #48191 | |
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Danny252
1461 posts |
I guess you could argue that SLW refers to a specific set of arrangements for double line where it isn't possible to signal "wrong road" normally, but I'd argue that Zoe is being overly pedantic and that it was entirely clear what was meant! I'd have thought that sending Up trains first would result in the fewest delay minutes - the Up would clear the section faster, as it isn't using crossovers at a reduced speed. If Down trains also run at a reduced speed over the Up Main, even more time is saved. Last edited: 09/08/2013 at 18:54 by Danny252 Log in to reply The following user said thank you: GW43125 |
| Sea Wall SLW 09/08/2013 at 19:15 #48192 | |
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John
884 posts |
And of course you have the added complication of two stations in the single line section, so I don't think there is a simple formula for the signaller to follow. If you hold back a stopper in favour of a class 1 then you invariably cause a problem further down the line when the stopper has to traverse the Exmouth branch and now clashes with another train, which in-turn may then encounter platforming difficulties at St Davids. I think it's probably best to give priority to Exeter bound trains where possible to try and avoid delays around St Davids. Log in to reply The following user said thank you: GW43125 |
| Sea Wall SLW 09/08/2013 at 19:45 #48193 | |
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Danny252
1461 posts |
" said:And of course you have the added complication of two stations in the single line section, so I don't think there is a simple formula for the signaller to follow.Ah, the old "let it become the next signalbox's problem" trick! Log in to reply |
| Sea Wall SLW 09/08/2013 at 20:55 #48196 | |
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Sam Tugwell
494 posts |
Its actually used far more than people think it is. Now that control allow them to use it for regulating, a fair few trains go 'down the up' to allow a faster service to overtake. A prime example is 6C62 (the down fuel tanks from Fawley - Tavistock Junction). "Signalman Exeter" Log in to reply The following user said thank you: Steamer |
| Sea Wall SLW 09/08/2013 at 21:33 #48198 | |
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Hooverman
306 posts |
Not forgetting that you need the pilotman to be at the right end of the single line, otherwise that hot class 1 is not going anywhere in a hurry.
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| Sea Wall SLW 09/08/2013 at 21:35 #48199 | |
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Sam Tugwell
494 posts |
Pilotman? What pilotman?
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| Sea Wall SLW 09/08/2013 at 21:39 #48200 | |
Steamer
3984 posts |
Ironically, during the flooding earlier this year, a landslide from one of the cliffs blocked the Up line, requiring SLW with pilotman on the Down! Out of interest, how well to the Voyagers stand up to spray off the wall these days? "Don't stress/ relax/ let life roll off your backs./ Except for death and paying taxes/ everything in life.../ is only for now." (Avenue Q) Log in to reply |
| Sea Wall SLW 09/08/2013 at 22:01 #48201 | |
Simdmuk
155 posts |
" said:Its actually used far more than people think it is. Now that control allow them to use it for regulating, a fair few trains go 'down the up' to allow a faster service to overtake.Indeed and also overtaking on the Up as on Sunday last when 1C81 1206 Paddington-Penzance overtook "down the up" the late running 1C81 1157 Paddington-Paignton. Theres a little video here of another occurance in July. Log in to reply |
| Sea Wall SLW 10/08/2013 at 03:44 #48205 | |
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Late Turn
699 posts |
" said:Pilotman? What pilotman? The pilotman that would be required if it was actually SLW as the thread title suggests  .
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| Sea Wall SLW 10/08/2013 at 15:53 #48213 | |
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Temple Meads
307 posts |
" said:Out of interest, how well to the Voyagers stand up to spray off the wall these days? A lot better than they did, although I'm still not sure I'd entirely trust one in a storm.. Username TIM in multiplayer Log in to reply |
| Sea Wall SLW 10/08/2013 at 16:56 #48215 | |
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Sam Tugwell
494 posts |
Not heard of a Voyager sitting down on the wall for a while now.
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| Sea Wall SLW 10/08/2013 at 18:29 #48219 | |
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Mooson
9 posts |
Unlike normal Single Line Working, where a pilotman would indeed be required, since the up line is signalled for bi-directional working, a pilotman is not required and trains are signalled by the signaller. There are less signals for trains in the down direction over the up line but trains can still be signalled a few minutes apart - not as closely as when running a batch of up trains where the normal signalling would apply.
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| Sea Wall SLW 10/08/2013 at 19:38 #48221 | |
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Zoe
252 posts |
If the line is bi-directional then SLW is not used at all. Trains in both directions will use the same line (in this case the Up Main between Dawlish Warren and Teighmouth) but this will not be under SLW.
Last edited: 10/08/2013 at 20:47 by Zoe Log in to reply |
| Sea Wall SLW 10/08/2013 at 22:35 #48224 | |
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Temple Meads
307 posts |
I got this video of an XC Voyager departing Dawlish for Paignton on the up line last month: http://youtu.be/bP79AwLFfZA Apologies for the poor quality. Username TIM in multiplayer Last edited: 10/08/2013 at 22:36 by Temple Meads Log in to reply |
| Sea Wall SLW 15/08/2013 at 17:01 #48445 | |
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GW43125
495 posts |
It would appear that I misunderstood the term 'SLW'...
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| Sea Wall SLW 15/08/2013 at 17:16 #48446 | |
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Temple Meads
307 posts |
" said:It would appear that I misunderstood the term 'SLW'...Easily done, it's only pedantry, everyone knew what you meant
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| Sea Wall SLW 02/02/2014 at 13:46 #54840 | |
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maxand
1637 posts |
Thought you might like this video [video]http://www.youtube.com/watch?v=nH8ZfgyhMZo[/video] Log in to reply |