"Clive D. W. Feather" wrote:

SDO is normally used to allow one set of doors to be off the platform,
not an entire coach at each end.

SDO is presently used at Bletchley for 4 cars (a whole unit) off the end of
the 8 car platform on a number of trains. The platform is being extended,
but it has been used in that manner for well over 2 years.

I've also seen SDO 4 in use of 12 when (because of a points failure) a 12
car set departed Bletchley P6.

Why not? It of course helps if your units are gangwayed as LM's are and
all should be, IMO.

Neil
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Neil Williams in Milton Keynes, UK. Put first name before the at to reply.