But I think the point BBM is making is that the announcements are about where, across the five cars of two coupled Turbo sets, you will find the first class compartments - not something that the CIS▸ can handle, so far as I'm aware. It's rather more straightforward with an HST▸ /Voyager/Pendolino, where it's all at one end of the train.
It's not quite as necessary though either is it? With the worst case scenario being that you're two carriages away from a first class compartment, whereas it could be up to five carriages with a HST. Also there's no need to hunt down the guards van if you have a bike - which is a bigger reason for station delays.
Wasn't suggesting it was necessary, just trying to clarify the original point which got lost in a welter of complaints about reverse formation HSTs, etc. Nothing wrong with a bit of added customer care though at Twyford though, is there? From what I can see, the CIS can happily identify two-car, three-car, etc, formations, assuming the right info is entered but the two-car 166 seems to throw a spanner in the works, as it turned up one morning last week on the 09.29 from Moreton-in-Marsh and was being announced as a three-car train.
