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Signal not clearing?

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Signal not clearing? 05/09/2023 at 23:00 #153208
p72endragon
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I have a route set from K977, but the signal won't clear and eventually 1C37 rings up. If I cancel the route and set it again immediately, the signal clears. I think I've seen similar with a signal on the other line as well, and I've a feeling it's somehow related to the sequence of events with me setting the route quickly after a preceding train. Is there something I'm doing wrong?


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Signal not clearing? 05/09/2023 at 23:53 #153209
GeoffM
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Hard to tell from a picture alone rather than a saved game, but I believe you have set a call-on route. If a preceding train is still (even partly) within the station, and you set the route over it, the interlocking automatically selects a call-on route instead of a main route. The conditions for a call-on route to show proceed are that one or more platform tracks are occupied, which they no longer are.

One odd thing reproducing it though is that there is an overlap. Normally you wouldn't have an overlap with a call-on route because the protection is typically a large lump of metal (ie a train) preventing any SPADs.

SimSig Boss
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The following user said thank you: p72endragon
Signal not clearing? 06/09/2023 at 22:41 #153219
p72endragon
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Ah, that's probably it. Thanks!
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Signal not clearing? 06/09/2023 at 22:47 #153220
Hap
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Are you able to provide a .ssg (save), just to allow us to look into any possible issues that isn't obvious to the naked eye by looking at the snapshot.

Ta
Craig

How to report an issue: www.SimSig.co.uk/Wiki/Show?page=usertrack:reportanissue
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Signal not clearing? 06/09/2023 at 23:19 #153221
p72endragon
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As requested (don't worry about it on my account though)
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Signal not clearing? 06/09/2023 at 23:43 #153222
Hap
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Did you have a TCF on the Down line beyond K997 and also set the route from K997 to K981?
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How to report an issue: www.SimSig.co.uk/Wiki/Show?page=usertrack:reportanissue
Last edited: 06/09/2023 at 23:43 by Hap
Reason: None given

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Signal not clearing? 07/09/2023 at 00:31 #153223
p72endragon
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Hmm...the only TCF at this time was that one on the Up line at Meldreth station. There had been a TCF earlier somewhere around K977 if I remember correctly, but I can't be sure without going back through the save files
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Signal not clearing? 07/09/2023 at 21:51 #153234
clive
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The calling-on route is set but, as Geoff points out, the overlap is set as well.

You could, I think, cause this by setting a main route from K977, occupying an intermediate track circuit (e.g. by a TCF), cancelling the route, then stroking it again, then clear the occupied TC. The first half of the route is the call-on route caused by the re-stroke; the second half and the overlap is the original main route. Unfortunately the saved information doesn't tell me that level of detail.

The last failure in the Royston area was cleared over an hour earlier. I can't figure out an exact process that would cause this state.

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Signal not clearing? 08/09/2023 at 00:42 #153235
TUT
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Oversetting maybe? Possibly under specific circumstances.
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