Erroneous ACOA at Dunfermline Queen Margaret?

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Erroneous ACOA at Dunfermline Queen Margaret? 14/04/2012 at 00:42 #31575
Gwasanaethau
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509 posts 		I thought I'd report this in case it might've been a bug:

Train 2K26 (in the August 2006 timetable) stopped on the up line at Dunfermline Queen Margaret and called to say it was going to be delayed and asked if I wanted to replace the signal. I chose yes and replaced signal EO714 and left EO716 in automatic mode. EO714 proceeded to wait 120 seconds under approach locking. Every event so far is normal and as expected. However, once the 120 seconds elapsed, 2K26 received an "adverse change of aspect (ACOA) at signal EO716" . When I scrolled across to find out what had happened, the TD for 2K26 had moved into the berth for EO714, and EO716 was red (should've been yellow) even though the train list pane still said 2K26 was "Delayed at Dunfermline Queen Margaret".

Some additional information that might be useful:
2G23-2 arrived at Dunfermline Town on the opposite line a few seconds after 2K26 arrived and proceeded to call me saying it too was going to be delayed. It is still waiting at EO715 (at Dunfermline Town).
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Re: Erroneous ACOA at Dunfermline Queen Margaret? 14/04/2012 at 00:51 #31576
Gwasanaethau
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509 posts 		Scrap that - a box has just popped up telling me there is a track circuit failure in the Charlestown interlocking area :whistle:. Very weird coincidence that! I wonder if there's some cable-thieving going on around there or something…
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Re: Erroneous ACOA at Dunfermline Queen Margaret? 14/04/2012 at 06:59 #31578
Peter Bennet
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5362 posts
Online 		Just to be clear here- have you concluded that the ACoA was caused by the TCF knocking back the signal?

Peter
I identify as half man half biscuit - crumbs!
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Re: Erroneous ACOA at Dunfermline Queen Margaret? 14/04/2012 at 14:45 #31593
UKTrainMan
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1803 posts 		Sounds like the driver of 2K26 (or someone they know and are colluding with) nipped out of the train and nicked some cabling :blink:
Any views and / or opinions expressed by myself are from me personally and do not represent those of any company I either work for or am a consultant for.
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The following users said thank you: guidomcc, Gwasanaethau
Re: Erroneous ACOA at Dunfermline Queen Margaret? 14/04/2012 at 16:31 #31595
guidomcc
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246 posts 		that's even better than wrong food trolley. "train delayed due to driver stealing cables, await TCF/SLF/points failure"
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The following user said thank you: Gwasanaethau
Re: Erroneous ACOA at Dunfermline Queen Margaret? 14/04/2012 at 17:27 #31599
Gwasanaethau
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509 posts 		" said:
Just to be clear here- have you concluded that the ACoA was caused by the TCF knocking back the signal?

Peter
That is correct. The TCF happened to occur between EO716 and EO714 immediately after the approach locking on EO714 timed out, causing EO716 to drop from yellow to red, in turn causing the ACoA.
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Re: Erroneous ACOA at Dunfermline Queen Margaret? 12/07/2012 at 19:10 #33863
Albert
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1313 posts 		The train probably saw 2 adverse changes of aspect (first to yellow, then to red) while it expected to see only one after the phonecall to the signaller.
AJP in games
Last edited: 12/07/2012 at 19:10 by Albert
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