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signal 399 Peterborough

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signal 399 Peterborough 26/03/2018 at 02:03 #107016
Airvan00
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81 posts
I realise that there will be soon an update to the Peterborough sim due to the problem of signal 329. So i thought it was a good time to mention the unsusal behavior of signal 399.
At every other signal in Sim Sig. The following sequence occurs. The train passes the signal, the description jumps to the next section and then the signal changes to Red. At signal 399 the signal changes to red before the description jumps. There is a delay of a few seconds before the description jumps.
Attached is a screen shot of the display 1B10 has just passed 399 at speed and the signal has changed to red.
It is not an important issue, but it does cause heart palpations :-)
Is the proximity of the frame in the next section the cause of this unusual behavior?
[attachment=9423]Screen Shot 2018-03-25 at 12.40.31 pm.png[/attachment]

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The following user said thank you: VInce
signal 399 Peterborough 26/03/2018 at 13:50 #107022
VInce
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302 posts
I'd agree with that.

Its caught me more than once...

Vince

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The following user said thank you: Airvan00
signal 399 Peterborough 26/03/2018 at 14:45 #107023
headshot119
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2614 posts
Though I can't comment on this specific case, it's not unheard of if the signal has a separate track circuit for the overlap on the ground, but it's shown as a combined track on the panel.
"Platform 1 your Maesteg service. Platform 1A your Aberdare. Platform 2 your London!"
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The following user said thank you: VInce
signal 399 Peterborough 26/03/2018 at 19:38 #107027
clive
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1666 posts
headshot119 in post 107023 said:
Though I can't comment on this specific case, it's not unheard of if the signal has a separate track circuit for the overlap on the ground, but it's shown as a combined track on the panel.
That is indeed the situation in this specific case.

There's no technical reason why it couldn't trigger as the train moves into the overlap, but this makes more sense in terms of likely feeds back to the train describer. Of course, if Network Rail would stop claiming that they don't have any information about the inputs to the TD, I could answer this for certain.

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The following users said thank you: Airvan00, VInce
signal 399 Peterborough 13/04/2018 at 00:00 #107502
DaveHarries
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817 posts
Glad someone has picked up on the issue with 329: I only noticed it this evening.

Dave

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