OTW sections without train staff

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OTW sections without train staff 03/05/2014 at 18:48 #60002
Muzer
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When you have an OTW section without a train staff (pretty sure these exist?), how are trains kept track of? Is the whole section track circuited, or is it just track circuits at the entrance/exit to the OTW section that have to be kept track of? If the latter, what happens after a power failure when the occupation of such a section is unknown?
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OTW sections without train staff 03/05/2014 at 19:38 #60006
BarryM
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http://www.SimSig.co.uk/dokuwiki/doku.php?id=usertrack:glossary:otw
Barry, Sydney, New South Wales, Australia
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OTW sections without train staff 03/05/2014 at 20:48 #60009
Muzer
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Ah, thanks, don't know why I didn't think to check there. That clears it up.
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OTW sections without train staff 04/05/2014 at 09:33 #60018
Late Turn
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I'd guess that, in the event of a loss of power to the interlocking (and no batteries, standby generators etc), it'd revert to showing occupied - though I'd welcome confirmation from my S&T colleagues! I've only ever dealt with one OTW (without staff) section showing occupied out of course, and I think that was caused by routine maintenance rather than a power failure - easily restored by the S&T, though a train going in and out (under pilotman working) would undoubtedly have the same effect.
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OTW sections without train staff 04/05/2014 at 09:38 #60019
Stephen Fulcher
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A power failure would indeed cause it to show occupied.
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The following users said thank you: Late Turn, Muzer