And here we see the legendary RailUK knee jerk aggression in the face of anything that could be remotely interpreted as criticism of rail staff...
He did make it abundantly clear that he was just asking if it was POSSIBLE and that no criticism of the Driver for going forward (after all, if that what the procedures say...) was intended.
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Reading the report its unclear whether the cess back to the last would have been blocked - the site photos do not show a long line of stacked rail in the cess, just blocks, one of which is where the driver would have had to walk to avoid the wire.
It occurs to me that an update of procedures should be considered to:
a) Suggest that drivers consider, depending on the situation (obviously if the wire is son on your own train it would probably be a bad idea), walking back down the track to the mast in rear to ID the location
b) Holding a table or database, and making it easily accessible to signallers, of Signal locations relative to masts in the Signal Box / Control Centre. The database could/should hold information on other lineside landmarks that can be unambiguously identified (eg. numbered location cases?). This could, again depending on the location and situation, remove the need for anyone to leave the train or, if they had to, reduce the distance they have to travel whilst exposed to potential danger.
No doubt these will be considered as one of the recommendations is:
RSSB should review Module AC of the Rule Book (GE/RT8000/AC)
and appropriately clarify the actions that train crew should take if they
are required to leave their train in situations where the OLE is electrically
live, and may possibly be damaged (paragraph 101b).
Oh, and it wasn't residual charge he was hit with, it was the full traction current. He is a very lucky driver to be alive.