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Northern line signals
On Wed, 16 Sep 2015 09:50:40 +0100
Mike Bristow wrote: In article , y wrote: Just wondering why all the signals are bagged on the northern. I realise its now running ATO but why not just disconnect the old signals entirely so they're off? I expect that is because a signal that is bagged is clearly decommisioned (or not yet commisioned), but a signal that is unlit is required to be treated as a red signal - becuase that's the safe thing to do if the bulb blows. Sure - if signals are still being used. But they're not and all the drivers know it. Besides which if the train is on ATO what the driver thinks is irrelevant because the train will just sail past anyway. -- Spud |
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