Originally Posted by
Jumbodriver
You cant do that and run 3 trains. They have to be able to pass somewhere. It will still be arriving on inside and departing on outside (or vice versa in t5a). The layout in T5B station remains the same but only 1 side of the 'landside' (not UK sterile) central platform will be used. The trains heading to T5C can only open doors on the out/airside.
Dont know how they plan to run transfers but B to C should be possible by clearing security in B and boarding "sterile" train to C or by boarding "non sterile" train to A from C getting off at B and clearing security there. Might be a bit complex though!
Why do you need three trains? Surely the trains would just run A-B-C-B-A on both sides? You could allow pax from the B connection centre back down to the outside platform for transit to C. The issue is pax from C going to B, as far as I can see (pun not intended).