Islineclear3_1
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Does the OP mean no fixed lineside signals?
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Trivia: Unsignalled, but electrified
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R
RailUK Forums
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Who knows? I don't think they've been back
It’s one train working. At the start of the day, the unit is signalled on to the branch ; once it is clear of the track circuit protecting the branch the train is then ‘locked in’. The signaller then has no further interaction with it unless an issue arises, and then communication can be made by the GSM-R.
At the end of the day the driver will contact the signaller to request a route off the branch. I don’t know the exact arrangements at Watford, but it could be via GSM-R, or via a plunger on (or near) the platform.
One Train Working prevents another train being locked in the branch; both in the interlocking and through the paperwork procedures.
In an emergency, the driver contacts the signaller via GSM-R (or vice versa).
The location of the train is established by the driver telling the signaller where he/she is!
Not to mention double track almost throughout, 2 platforms and associated pointwork at BMN. It may be worked by one train these days but that's all.
As far as the signaller is concerned, the train takes a siding off the slow lines at Watford (which happens to be platform 11) which he/she then treats a a tokenless 'one train on branch running'* until the trains is released back onto the mainline. Return is protected by signal 856 and there is no connection to any other track including sidings north of that signal. The driver would have full contact with signallers via GSM-R.
Strictly speaking, the Bushey Mill Lane crossing is really no more than a track circuited operated pair of half-booms with AFAIK no functional connection to the WCML signalling system. The signals are really only there to warn the train to slow (and stop at the platform going northbound). Yes there is a signal facing away from the actual crossing, more like traffic lights.
* not sure what the signalling description of such a situation might be.
Ooops, didn't notice Bald Rick's more authoritative explanation above. That's the problem working with a tablet that repeatedly reboots unexpectedly.
I assume that my description of Bushey Mill Road crossing is somewhere near factual.
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Before the Romford Upminster Branch was electrifried it was signallined. There was a double semaphore signal which was always stuck in the same position except for when the DMU arrived and departed. It had its own signal box/garden shed with the name Romford Ground Frame.
Only in the peak hours (it's not electrified, of course!).
You really need to explain what you mean by "entirely unsignalled".
mjmason1996
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Are the Ardrossan harbour/ Largs branches up on the Ayrshire coast signalled at their extremities?
Dr Hoo
Established Member
Plenty of funicular railways are electrically powered but there are usually no signals at all.
A few are water-balance, of course.
A few are water-balance, of course.
MadMac
Member
Largs is fully signalled. Ardrossan Harbour is, I believe, a “one in-one out” arrangement.
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