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Bristol TT query

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Bristol TT query 16/11/2012 at 19:51 #37573
DaveHarries
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1285 posts
Hi all,

I have decided to do another Bristol TT which could cause chaos for some trains in terms of timing: more later when the TT is done. However a query: what entry point do I use for FGW HST sets starting empty from St. Philips Marsh depot?

Thanks,
Dave

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Bristol TT query 16/11/2012 at 22:57 #37574
Ben86
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Dave, I think you need to use either St. Philips Marsh TMD A or B.

Ben

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Bristol TT query 17/11/2012 at 00:01 #37577
Underwood
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Victoria Sidings or St Philips Marsh A or B (as mentioned). A or B will hold one HST set, though I believe a couple may go from Victoria Sidings via A or B road? (assuming some shunt to the shed first).

EDIT: Last time I visited there was a set or two in Marsh Jn Sidings too, and they exit via Bedminster. Weather they still do or not is another matter..

Last edited: 17/11/2012 at 00:03 by Underwood
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Bristol TT query 18/11/2012 at 14:08 #37651
DaveHarries
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Thanks for your replies. Another query though.

One of the first trains - coded 5O93 - runs via. Temple Meads. It is comprised of a Class 158 (bound for Cardiff) along with a 2-car Class 150 which gets left at Platform 5 for another train. Of course, the Class 150 would come in head first. So, in order to get the Class 150 dropped off and the 158 to depart for Cardiff, do I use DF (Detach Forward) or DR (Detach Rear)?

I ask because I am not used to doing new TTs where things get detached.

Thanks,
Dave

Last edited: 18/11/2012 at 14:08 by DaveHarries
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Bristol TT query 18/11/2012 at 14:17 #37652
Ben86
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Use 'Divide Front' (DF) to form the new train. N.B. This is sligthly different to 'Detach Front' (DEF), which would leave the original portion with no power. Divide/Detach instructions are based on the direction the train is facing on arrival.

Hope that makes sense!

Ben

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Bristol TT query 18/11/2012 at 15:13 #37654
DaveHarries
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Thanks for the reply. That is fine. However I now have discovered it to be a double drop. That is to say that 5O93 drops trains for two other services not just one. How do I write that in?

Dave

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Bristol TT query 18/11/2012 at 15:23 #37655
Ben86
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You should be able to write two DF instructions. DF to drop the one at the front end first. Then DF again to drop the set in the middle of the original trio.

Hope that logic makes sense.

Ben

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Bristol TT query 18/11/2012 at 18:50 #37666
DaveHarries
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Next point: I need to create a new train type. So:

1. How do I do so?
2. What length & max speed for a train consisting of 1x Class 150 + 2x 3-car Class 158?

Dave

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Bristol TT query 18/11/2012 at 19:26 #37668
sloppyjag
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480 posts
I always find this page in the Wiki helpful for setting up MU characteristics.

http://www.SimSig.co.uk/dokuwiki/doku.php?id=usertrack:ttuse:munits

Planotransitophobic!
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Bristol TT query 18/11/2012 at 19:27 #37669
Steamer
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3985 posts
Quote:
1. How do I do so?

F4>'Train Types' tab> New.
Quote:
2. What length & max speed for a train consisting of 1x Class 150 + 2x 3-car Class 158?

159 meters, 75 mph. This Wiki page lists all the neccessary information for all multiple units and fixed-formation stock.

EDIT: Sloppyjag posted while I was writing my post.

"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)
Last edited: 18/11/2012 at 19:31 by Steamer
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Bristol TT query 07/01/2013 at 10:31 #40305
DaveHarries
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Sorry to bump this thread but another hitch has come up with this TT.

I had planned to have the TT finished by Xmas 2012 but problems with the online data source, since fixed, prevented the TT being completed. I have now gone back to work on it and am fixing a few errors. It is one of these errors that is the cause of this post.

With train 1C31 I have the next working as 5C31. When I used the SimSig tool which allows you to Analyse the TT for errors it said that train 5C31 was "already used" although I only have one train with that code. I presume this is a bug with the sim. Correct?

Also it says that several of the trains that I have put in to pass Filton Abbey Wood non-stop are "booked to reverse but have passing time ticked". Why would this come up as a reversing movement?

Cheers,
Dave

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Bristol TT query 07/01/2013 at 13:16 #40306
jc92
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"train already used" indicates that there are two or more trains in your timetable which form 5C31 via N:5C31 as an activity. if bristol TT editor has the function, you can highlight 5C31 and use the "referenced by" button to see which two trains form 5C31, then edit as appropriate.
"We don't stop camborne wednesdays"
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Bristol TT query 07/01/2013 at 13:36 #40307
dwelham313
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As a 'quick fix' you could alter the trains headcode to 5C31-1 or 5C31-A for example. Im currently playing Kings Cross 2012 olympic timetable, (fantastic timetable BTW) and the tools says that 1S06 is 'already used' but I cant find a duplicate in the timetable.
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Bristol TT query 07/01/2013 at 13:39 #40308
clive
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" said:
Also it says that several of the trains that I have put in to pass Filton Abbey Wood non-stop are "booked to reverse but have passing time ticked". Why would this come up as a reversing movement?
The timetable consists of a sequence of stations that the sim interprets as requiring a reversal. It's then picked Filton Abbey Wood as the reversal point. I'd need to see both the sequence you'd picked and the source code for Bristol to be able to say why.

For example, in Cambridge, if you schedule a train Royston-Shepreth Branch Jn-Whittlesford, the sim will demand a reversal at Shepreth Branch Jn.

In complex layouts it can be quite hard to get this right, both in writing the sim and then in writing timetables. The Ely loop was a particular nightmare.

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Bristol TT query 07/01/2013 at 14:02 #40309
DaveHarries
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Thank you for your replies guys.

In regards the reversing request at Filton Abbey Wood, the trains in question - of which there look to be a total of 26 - are all services heading from Bristol Parkway to Bristol Temple Meads via. Filton Abbey Wood and Dr. Day's Junction. Not all of the trains on this route are flagging up with this problem though. I guess putting in a P/T for Stapleton Road would fix the problem but I don't have one.

Some of the problems that want fixing are:

Train never runs: 8 trains
Reversing at Filton A/W but P/T ticket: 26 trains
Reversing at Dr. Day's Jcn but P/T ticket: 1 train
Part of train "Got Lost": 2 trains

The other probs I can fix myself but I may call on help later and get someone to look it over. Does "Got Lost" mean wrong route / PF or something else? Hmm...

Dave

Last edited: 07/01/2013 at 14:02 by DaveHarries
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Bristol TT query 07/01/2013 at 14:25 #40310
dwelham313
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Im currently just tweaking a Cambridge Timeteable that i've written and i had a 'got lost': "train 1T86-joining train 5T09 got lost". A train arrives from Kings Lynn (1T86) and awaits a join but I had changed the original joining portion from 5T09, which exits the sim, to 5T86 which is a new entry, without amending 1T86s timetable. Perhaps your 'got lost' train is something similar?

I apologise if this makes no sense whatsoever!

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Bristol TT query 07/01/2013 at 16:58 #40314
Steamer
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3985 posts
" said:

Train never runs: 8 trains

The train originates within the Sim, but is not referenced in an N:, DF: or DR: activity.

" said:

Part of train "Got Lost": 2 trains
I think this means that if train 1X01 is booked to join 1X02, but train 1X02's TT is invalid, 1X01 will produce a 'associated train got lost' error.

"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)
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Bristol TT query 07/01/2013 at 19:03 #40317
guidomcc
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" said:
Not all of the trains on this route are flagging up with this problem though. I guess putting in a P/T for Stapleton Road would fix the problem but I don't have one.

If there are odds and bods of missing data the one thing I do is call up an existing TT for a date similar to that you are writing, and take the time between locations from a similar train. This could give you the Stapleton Road passing time you need.

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Bristol TT query 07/01/2013 at 21:26 #40319
clive
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2789 posts
Explanations for a few of the messages.

"Associated train 1A23 not defined" - you refer to 1A23 in an activity, but there's no such train.

"Spurious Next activity at Somewhere" - when two trains join, only one should do anything after the join. If both trains have further activities or timetable locations after the join, one is accepted and the other gets this message. If the wrong train gets accepted, you could get other errors as a result; fix this and they'll go away.

"No further activity after joining at Somewhere" - the converse of the previous one: if neither of the joining trains does anything after the join, one of them will get this message.

"Next at Somewhere not the final activity" - a train can't have activities after a "Next:1A23".

"Next train 1A23 already used" - two trains both have "Next:1A23". The first one the analyser spots gets to use it, while the second train gets this message.

"Terminates at Somewhere with no onward working" - the train's timetable ends at a location that isn't an exit from the simulation, and it doesn't join or have a "Next" activity. This can be valid if the train is just going to sit there until the end of the timetable.

"Never used" - there is no way for this train to run, since it doesn't have an entry point and isn't referred to in a "Next" or "Divide" activity.

"Never runs, referred to by 1A23" - this train appears in a "Next" activity for 1A23, but 1A23 never gets to it for some reason (usually one of the above errors).

"Joining train 1A23 got lost" - this train is supposed to join to 1A23, but 1A23 never gets to the joining location for some reason (usually one of the above errors).

Hope this helps.

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Bristol TT query 07/01/2013 at 22:03 #40322
postal
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5265 posts
" said:
"Next train 1A23 already used" - two trains both have "Next:1A23". The first one the analyser spots gets to use it, while the second train gets this message.
To add to Clive's helpful set of explanations, this message sometimes occurs "legitimately" when different trains on different days then form the same next working. This can happen either when one of the days of the week seed type TTs is used or where there are probablitiies and mutually exclusive rules set so that only one of the incoming trains runs.

For example there might be an outward working 1A00 normally formed from 5A00 ECS working. However, on FO 1A00 is formed from an incoming additional service. This certainly happens on jc92's Euston TT where one of the outbound services is formed from ECS on some days and from an incoming Northampton - Euston working which runs on the other days. In this case, you get the warning about "Next train 1A00 already used" when you analyse the TT, but in practice 1A00 runs, forming out of whichever incoming service appears on the day.

Therefore you need to watch whether you have actually dropped a clanger and want to use the same train twice or whether you only want to use it once on a run of the TT even though it appears twice in the Next activities.

“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
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Bristol TT query 07/01/2013 at 22:27 #40324
DaveHarries
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1285 posts
Guys,

Thank you all for your list of suggestions: much appreciated. I have gone through quite a few of the cases where the train "never runs" and found that they are tied up in other workings. I first thought this had gone wrong list night - when I tried to run a test for an hour - when there was no onward working for 5T08 but I have since added one. I called time on the session when 5O93 failed to enter as that brings in stock for other trains.

I so far have a total of 163 errors (96 for invalid TT data & 67 warnings). The Invalid TT data ones seem to be for trains running between Filton Abbey Wood and Dr. Days Junction but I think that may be a bug.

Anyway, I have a few more trains to add in for South Wales - Bristol Parkway - London Paddington that run when the Swindon - Reading line reopens so I shall get them done. I may then throw it open if anyone fancies running their eyes over it: if you wish to volunteer then please give me a PM.

Once I am done with this TT I may then go and create a Westbury sim TT for the same date which I think may not be quite so difficult...

Thanks,
Dave

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