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Shunt sig failure!

You are here: Home > Forum > Simulations > Released > North East Scotland > Shunt sig failure!

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Shunt sig failure! 29/09/2014 at 19:45 #64776
409 posts
Saved game attached.

Essentially, I've had to talk 1A59 past P61 to get to P97, because shunt signal 97 is unlit. The train and the infrastructure give off all the standard indications you would expect from an unlit signal. Except for the fact, that shunt signal 97 appears as OFF.

Over to you guys... I'm sure I'm not the first to have a shunt signal fail.

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Shunt sig failure! 29/09/2014 at 20:01 #64778
Stephen Fulcher
1588 posts
This is a possible bug, depending on the exact nature of the real installation.

Not all shunt signals are proved, those which are "preset" shunts generally are in modern practice. Preset meaning that the shunt signal is called automatically by another route from a main signal to main signal.

It is fairly common (although much less so now that most shunt signals are LED) for a ground signal to show an aspect on the panel but in reality be unlit. The panel indication is generally driven off the aspect control relay with no lamp proving involved, therefore if it goes out then the indication as to what it should be doing will remain on the panel.

I do not believe Perth is particularly modern, so I am not sure what standards would have been in force when it was commissioned.

Last edited: 29/09/2014 at 20:03 by Stephen Fulcher
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Shunt sig failure! 29/09/2014 at 20:09 #64779
409 posts
Perth opened 27/3/62 if that helps.
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Shunt sig failure! 29/09/2014 at 20:43 #64780
Peter Bennet
4797 posts
I vaguely recall this has been discussed before and that the answer was as Stephen says. It's core-code rather than Sim specific.

From Andrew's flicker.


I identify as half man half biscuit - crumbs!
Last edited: 29/09/2014 at 20:46 by Peter Bennet
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Shunt sig failure! 30/09/2014 at 06:28 #64786
310 posts
" said:
I vaguely recall this has been discussed before
On this thread: Shunt signal failed

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The following user said thank you: AndyG