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level crosings on the LUL
"Clive D. W. Feather" wrote in message
... In article , MetroGnome writes Is it because the crossing has to be closed to road traffic before the train arrives, and while it dwells in the platform? I've seen this before on heavy rail (eg for London-bound trains at Higham's Park) - presumably because the crossing is within the signal overlap of the station starting signal, and therefore a train cannot be let into the platform until the crossing is clear of road traffic in case the train overshoots. No: an open level crossing is not counted as an obstruction in the overlap (unless, of course, there's a problem such as a broken-down car), so trains can be signalled up to a red signal right at the crossing. Really? I thought that it was standard practice to close a level crossing if it was just beyond the end of a platform in case the train overshot and strayed onto the crossing. Certainly that's what's done with London-bound trains at Sunningdale and Reading-bound trains at Egham. Or are you saying that it *is* done, but that it's for safety rather than purely signalling reasons? |
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