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| Thingley Reversals 19/05/2015 at 17:57 #72489 | |
DaveHarries
1285 posts |
In regards of the new timetables I am working on I have been doing the ECS moves in Swindon, and more specifically at Thingley Junction / Thingley East Junction and I am hitting a snag. Certain HST services from London Paddington are starting from / terminating at Chippenham. The WTT for one such move looks like this: http://www.opentraintimes.com/schedule/V52108/2015-08-03 Presumably the way this would work would be to make the HST go as far as signal SN1074 where it could be reversed back into Chippenham by setting the relevant signals. Meanwhile there are a few short DMU services between Swindon and Chippenham which have ECS moves specifying Thingley Junction, not Thingley East Junction, as the reversal point. http://www.opentraintimes.com/schedule/V52153/2015-08-03 Presumably the Thingley Junction reversal point would be on the DM while the Thingley East Junction reversal point would be on the UM. However I can't get the UL line code to work for departures from Chippenham on the HST reversals> the sim insists on ML being the right line code. It would take ML to UL even. Any tips? Dave Log in to reply |
| Thingley Reversals 19/05/2015 at 18:13 #72491 | |
GeoffM
6377 posts |
Firstly, timetable planners often specify a junction as a reversal point even though the train has to cross the junction twice to get to where it needs to go. It's assumed the signallers know what is meant, which invariably they would. It would be a different matter if it was an ARS area though - actual reversal locations would have to be specified, just like SimSig (I wonder why :whistle: ). I would have thought reversing behind SN27 from Chippenham to be the less preferable since it involves Bristol panel and the SIMBIDS. But without a line code in the timetable, it's not obvious to me (maybe it is to the planners and signallers). Without trying, I would have expected that Chippenham-ThingleyEast-Thingley-ThingleyEast-Chippenham would work in the sim. If not, perhaps Peter will be along later to confirm if/why. SimSig Boss Log in to reply |
| Thingley Reversals 19/05/2015 at 20:36 #72496 | |
Peter Bennet
5402 posts |
The data appears to allow Chippenham/Thingly Jn with or without EJ involved but I've not tried so I'm not sure if the ARS will validate all the paths and line codes. You have to remember that the in real life a train can physically stop anywhere and reverse anywhere but in SimSig you need locations and what can happen there set out in the data. So the permutations and combinations of locations could be almost limitless. Peter I identify as half man half biscuit - crumbs! Log in to reply |
| Thingley Reversals 19/05/2015 at 20:41 #72497 | |
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Peter Bennet
5402 posts |
" said:The data appears to allow Chippenham/Thingly Jn with or without EJ involved but I've not tried so I'm not sure if the ARS will validate all the paths and line codes.Actually I think it will validate if you insert EJ in the down direction but not the Up. I identify as half man half biscuit - crumbs! Log in to reply |
| Thingley Reversals 19/05/2015 at 22:17 #72500 | |
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DaveHarries
1285 posts |
" said:I would have thought reversing behind SN27 from Chippenham to be the less preferable since it involves Bristol panel [.....] Would it? How come? SN27 is, when coming from Bristol, just past the line to / from Thingley Yard so whoever did Panel 1 on SwinDid could bring any entering train to a halt. It is slightly more confusing when you realise that some of the waits by reversing trains are more than 10 minutes and there is, for good measure, one ECS where it would make sense to halt at SN1074 reverse behind SN27. Anyway, in this TT the line from Bathampton Junction to Thingley Junction is closed: the TT reflects the 24/7 closure throughout August of the lines between Bathampton Junction and Chippenham, as well as between Bathampton Junction and Bradford Junction, for major engineering works so no reason to inviolve Bristol on this line as all trains to & from Bristol will use the Badminton route. Info for anyone interested: https://www.firstgreatwestern.co.uk/bath2015 Thanks all for your replies. I will code the TT and run it to see what happens with those HSTs. Dave Last edited: 19/05/2015 at 22:25 by DaveHarries Log in to reply |
| Thingley Reversals 19/05/2015 at 22:29 #72501 | |
Steamer
3986 posts |
" said:It is slightly more confusing when you realise that some of the waits by reversing trains are more than 10 minutes and there is, for good measure, one ECS where it would make sense to halt at SN1074 reverse behind SN27.Most of that wait is for good reason, it takes about 8 minutes for a driver to change ends on a HST. "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 |
| Thingley Reversals 19/05/2015 at 22:42 #72502 | |
postal
5265 posts 
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" said:" said:FGW driver Lazzer says it takes at least 7 minutes in this topic so 10 minutes doesn't err too far on the side of caution.It is slightly more confusing when you realise that some of the waits by reversing trains are more than 10 minutes and there is, for good measure, one ECS where it would make sense to halt at SN1074 reverse behind SN27.Most of that wait is for good reason, it takes about 8 minutes for a driver to change ends on a HST. “In life, there is always someone out there, who won’t like you, for whatever reason, don’t let the insecurities in their lives affect yours.” – Rashida Rowe Log in to reply |
| Thingley Reversals 19/05/2015 at 22:47 #72503 | |
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GeoffM
6377 posts |
" said:" said:Well, I didn't know it was actually closed beyond Corsham so that changes factors somewhat. I also wasn't entirely sure the sim was right with routes from SN72 and SN672 to SN286 (1074 in the sim) but I've now seen a locking sketch which confirms that it is indeed possible.I would have thought reversing behind SN27 from Chippenham to be the less preferable since it involves Bristol panel [.....] SimSig Boss Log in to reply |
| Thingley Reversals 20/05/2015 at 05:43 #72506 | |
Forest Pines
525 posts |
" said:Bathampton Jn-Thingley Jn exclusive is closed for half of July then Bathampton Jn is blockaded completely for the whole of August - trackbed lowering prior to electrification. Of course, nothing public has stated the exact limits of possession, which might alter reversal locations. Bath's going to have an hourly service to Paddington via Temple Meads and the Badminton line, incidentally. My Bristol-Bath commute's going to be fun! Last edited: 20/05/2015 at 05:44 by Forest Pines Reason: fixed tags Log in to reply |
| Thingley Reversals 20/05/2015 at 05:50 #72507 | |
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Peter Bennet
5402 posts |
" said:" said:Yes it will work without EJ in the TT but you need to switch out the LUPTHING ARS control and manually route it. If you want to route it behind 27 you must NOT have EJ in the timetable. Note that the TD steps to behind 25 and you need to manually move it back (not necessarily a bug - remember you are doing something out of the ordinary).The data appears to allow Chippenham/Thingly Jn with or without EJ involved but I've not tried so I'm not sure if the ARS will validate all the paths and line codes.Actually I think it will validate if you insert EJ in the down direction but not the Up. Peter I identify as half man half biscuit - crumbs! Log in to reply |
| Thingley Reversals 20/05/2015 at 10:07 #72521 | |
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DaveHarries
1285 posts |
" said:Bath's going to have an hourly service to Paddington via Temple Meads and the Badminton line, incidentally. My Bristol-Bath commute's going to be fun! Yes it will. It seems that short trains will run Bath to Bristol so you won't be completely isolated. OTT & RTT currently suggest that all trains will use Platform 2 at Bath Spa though. Also both OTT and RTT suggest an hourly service will run Chippenham to London Paddington with some additional short trains between Swindon and Chippenham. In addition the Cardiff to Portsmouth Harbour services will instead operate Swindon to Portsmouth Harbour and these will also all call at Chippenham so you could still get to Swindon and pick up London Paddington services off the Kemble line from Gloucester. Dave Last edited: 20/05/2015 at 10:08 by DaveHarries Log in to reply |
| Thingley Reversals 20/05/2015 at 10:17 #72522 | |
headshot119
4869 posts |
I'm so glad that the Severn & Solent region won't be where I am over the summer, it's gonnah be a nightmare to get anywhere!
"Passengers for New Lane, should be seated in the rear coach of the train " - Opinions are my own and not those of my employer Log in to reply The following user said thank you: Forest Pines |
| Thingley Reversals 20/05/2015 at 20:45 #72539 | |
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Forest Pines
525 posts |
" said:" said:True - it's much worse for those of my staff who commute from Westbury or Swindon to Bath!Bath's going to have an hourly service to Paddington via Temple Meads and the Badminton line, incidentally. My Bristol-Bath commute's going to be fun! I've already done both of the crossovers between Bath and Oldfield Park, so I'm not bothered about P1 being out of use - the rumour I heard is that the other track is going to be slewed into the centre so the platform can be widened. The one bit of rare track I'm annoyed I haven't done - I could have if I'd waited for the next train from Bath - is that I once saw a down HST run wrong line from Bath to Bristol because a 150 had failed at Oldfield Park. I was on the failure instead! Log in to reply |
| Thingley Reversals 20/05/2015 at 22:47 #72542 | |
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DaveHarries
1285 posts |
" said:I've already done both of the crossovers between Bath and Oldfield Park, so I'm not bothered about P1 being out of use - the rumour I heard is that the other track is going to be slewed into the centre so the platform can be widened. This is what I heard from a rail enthusiast at Bath Spa back in December last year. Why only widen one platform, not the other, I wonder? Dave Log in to reply |
| Thingley Reversals 21/05/2015 at 11:51 #72555 | |
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Forest Pines
525 posts |
I would have thought Platform 2 to be the one most in need of widening, also. However if you had a free choice of platform to use for turnbacks regardless of engineering considerations, Platform 2 is probably easier overall for the station staff and has more passenger facilities - the big thing it doesn't have is straightforward level access for evacuation in an emergency situation.
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| Thingley Reversals 02/08/2015 at 16:21 #74678 | |
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BoxBoyKit
166 posts |
Have just discovered that the blockade is called the Bathampton TPOD. Was wondering if anyone knows what TPOD stands for as I can't decipher it or find it anywhere.... Many thanks.
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| Thingley Reversals 02/08/2015 at 21:23 #74685 | |
BarryM
2158 posts |
TPOD Track Preparation Overhead Distribution? Barry Barry, Sydney, New South Wales, Australia Last edited: 02/08/2015 at 21:24 by BarryM Log in to reply |
| Thingley Reversals 03/08/2015 at 08:25 #74691 | |
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tomsmith27
8 posts |
Temporary Period of Disruption I belive.
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