In message , at 19:18:56 on Mon,
23 Aug 2010, Clive remarked:
LU trains in sidings often (used to) have "THIS TRAIN MUST NOT BE
MOVED" hung on the outside of the cab. Would that be because they had
chocks fitted or something?
BR used to use metal flags on poles fitted to lamp brackets saying "NOT
TO BE MOVED" when there was a fitter or anyone else that might be out
of sight but working on an engine.

Almost every EMT train I get to St Pancras seem to have a red hexagonal
"not to be moved" sign attached above the driver's door as soon as it
arrives.
--
Roland Perry