"Roland Perry" wrote in message
...
In message , at 12:09:45 on Sun,
3 Aug 2008, Paul Scott remarked:
As I've mentioned before, TOCs such as SWT use SDO by whole unit,
sometimes
only releasing the doors in 4 coaches of 12; or using single door only in
444s at 4 platform stations such as Beaulieu Rd, or Shawford.

Do those trains have a corridor connection between each set of 4
carriages?


Yes - and so do Southern, (on their EMUs) which also have the benefit of SDO
by carriage number, rather than whole unit.

Paul