I think its more like the internal system at Stansted that takes you from
the departure/arrival areas out to the piers. There is a picture of one of
the 'trains' being craned down an access shaft in Modern Rail this month. It
is referred to as a 'tracked transit system (TTS)' but looks just like a bus
to me - the large rubber tyres being the biggest giveaway!


Rubber tyres don't necessarily make it a bus. How about Metro line 1
in Paris? Those
trains have rubber tyres.


Phil