On 18 Nov, 17:07, D7666 wrote:
On Nov 18, 3:38 pm, wrote:

A couple of points. Southern use SDO on 377s at Battersea park on the
up slow and down fast as they are that little bit longer than 455s.

So the analogy then is 377/5 are using GPS for normal doors use as a
319 is more or less same as a 455 in this respect ?

--
Nick

Indeed, however I have to correct my post as the 455s also show front
7 coaches only for Battersea Park on the up slow, which I discovered
yesterday. I was in the back coach but alighted at Clapham Junction so
have no idea what if anything is in place to stop peole opening the
doors, one assumes nothing except grandfather rights ? Will try and
find out.

Richard