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Duplicate trains

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Duplicate trains 07/04/2015 at 20:58 #70853
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76 posts
All,

Not a complaint, merely a list.

6M62 is duplicated when starting the timetable at 0445.
More to come, just started a second run through, this time using 0.0.48. Thanks

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Duplicate trains 07/04/2015 at 21:00 #70854
Stephen Fulcher
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2078 posts
These have all been logged on Mantis, and are shown as fixed in the next version.
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Duplicate trains 08/04/2015 at 00:17 #70856
TheVillan
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3 posts
Think my favourites (which I also believe are fixed) are the 3 6M62's that like chasing each other all the way from Clay Cross to Kingsbury, and the 90mph edition of 6M99 which made me do a double take the first time it appeared...
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Duplicate trains 01/05/2015 at 04:59 #71564
maxand
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1637 posts
Here is a saved game showing the existence of two 6M62s, one behind the other.

In the Show Timetable window, both have the same UID (H74519), yet in the Train List, one of them is H74519 while the other is H74520.

To make matters worse, I received an incident report stating "6M62 is running with a loss of power" but no telling which one as they both have the same speed. Unfortunately Incident Reports don't seem to be saved along with the rest of the sim. I don't think including the UID along with the headcode would be of much use here since even the UIDs are identical!

I'm glad this bug has been reported and filed.

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Last edited: 01/05/2015 at 05:01 by maxand
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Duplicate trains 01/05/2015 at 08:15 #71575
GoochyB
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222 posts
The UIDs aren't identical, because they are by definition unique! The Train List correctly shows the two UIDs, it is the sim in picking up the timetable from the headcode for Show Timetable that just opens the first one it finds with that headcode rather than checking the UID.

I think that using Edit Timetable from the Train List shows the correct one for each train.

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The following user said thank you: maxand
Duplicate trains 01/05/2015 at 09:25 #71582
maxand
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Thanks GoochyB. In that case, we have not one problem but two. The first is allowing two services with identical headcodes to coexist, the second is deriving the UID from the first matching headcode and not the Train List.

It would be nice, though non-prototypical I guess, to include the UID along with the head code in any incident report, though this would be unnecessary as long as there are no duplicate coexisting headcodes.

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Duplicate trains 01/05/2015 at 13:52 #71586
postal
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" said:
Thanks GoochyB. In that case, we have not one problem but two. The first is allowing two services with identical headcodes to coexist, the second is deriving the UID from the first matching headcode and not the Train List.

It would be nice, though non-prototypical I guess, to include the UID along with the head code in any incident report, though this would be unnecessary as long as there are no duplicate coexisting headcodes.
Max

The issue of duplicated headcodes has been discussed on this Forum a number of times. This is something that happens every day in the real world and happens in some of the SimSig sims like Saltley, so there is nothing intrinsically wrong with having identical TDs for two different trains showing at the same time. In earlier SimSig timetables, you would have the same 4-character TD showing with the trains differentiated by suffix characters in the TD (e.g. 1A00-1, 1A00-2 etc). Now that there is the scope to use UIDs to differentiate between trains, some timetables are being written with all TDs as 4 characters only, the UID supplying the unique identity for each variant under the common TD.

In the case you are worried about presumably a rule has got lost in the TT writing process but that is the only problem with that case.

“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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The following user said thank you: Meld
Duplicate trains 05/05/2015 at 08:22 #71711
GoochyB
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222 posts
Although in this instance these are indeed variants of similar trains that should be mutually exclusive in the TT, this does identify a more general issue that where two trains with the same headcode are in the area at the same time (as has been identified in another thread as happening with ECS trains to Central Rivers/Etches Park) then clicking the headcode of either train will always bring up the same timetable (presumably that of the one with the alphanumerically first UID) rather than the one for that particular train.
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Duplicate trains 05/05/2015 at 22:38 #71735
pedroathome
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If we go back historically, a single headcode would operate a route for a whole day. Attatched is a scan from BR(LMR) CH 1979 showing the Ffestinniog branch. Note that 2D85 has been repeated twice here, and that after this, the passenger services are all running under the headcode 2D70.
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