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Platform 5 Glasgow Queen Street

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Platform 5 Glasgow Queen Street 15/02/2013 at 15:45 #41560
John
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Whilst waiting for the overlap in advance of 2N60 to drop-out, I set the route from CQ66 to CQ64 in readiness for the departure of 1R80 in platform 5.

Next thing I know 1R80 has proceeded towards CQ66.

Last edited: 15/02/2013 at 16:14 by John
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Platform 5 Glasgow Queen Street 15/02/2013 at 16:31 #41561
GeoffM
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It's an unfortunate quirk of chicken-and-egg situations where the train won't move until the signal shows a proceed aspect, and the signal won't show a proceed aspect until the train is closer to the signal. This is a case where it shouldn't have happened.
SimSig Boss
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Platform 5 Glasgow Queen Street 15/02/2013 at 16:47 #41562
jc92
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" said:


Whilst waiting for the overlap in advance of 2N60 to drop-out, I set the route from CQ66 to CQ64 in readiness for the departure of 1R80 in platform 5.

Next thing I know 1R80 has proceeded towards CQ66.
another good example of this is any long multi track circuited platform (euston and Lime Street spring to mind) where the exit signal has a time released shunt aspect. the train will ring out, then proceed against the red signal, until the signal clears to a shunt aspect, for instance when putting a loco into the neck siding at lime street, or one of the BORS at Euston.

it does beg the question as to why these aspects are approach/time released at all, given the train in question will always have been stationary. theres no apparent requirement to check the trains speed? (perhaps a little off topic from the situation at QS, but still a valid question?)

Joe

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