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Track Circuit Failure in rear of Approach Controlled Signal

You are here: Home > Forum > Miscellaneous > The real thing (signalling) > Track Circuit Failure in rear of Approach Controlled Signal

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Track Circuit Failure in rear of Approach Controlled Signal 11/05/2014 at 07:18 #60320
Andrew G
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In real life if the approach track fails will an Approach Controlled Signal come off as soon as the route is set and if so will a Signaller delay clearing the signal until they are confident the train speed has been checked sufficiently?

If no what controls prevent the signal coming off?

Thanks in advance for anybody who can help with this query, generated by a TCF at Bushbury Junction.



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Last edited: 11/05/2014 at 07:20 by Andrew G
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Track Circuit Failure in rear of Approach Controlled Signal 11/05/2014 at 07:28 #60321
Firefly
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521 posts
Hi

Yes the approach controlled signal will come off. This is protected by the fact that the signal in rear will be held at red by the TCF so the train would be proceeding at caution towards the signal in question.

We have to be very careful to make sure that the signal in rear is fed by the same or a later repeat of the track circuit relay that releases the approach control. (Known as Raynes Park control)

FF

Last edited: 11/05/2014 at 09:22 by Firefly
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The following user said thank you: Andrew G