23% increase in carriages, so excluding Caledonian Sleeper.
Class 156 48x2
Class 158 48x2
Class 170 59x3
Class 314 16x3
Class 318 21x3
Class 320 22x3
Class 334 40x3
Class 380/0 22x3
Class 380/1 16x4
= 796 carriages 23% increase = 980
New stock
AT200 46x3
AT200 24x4
HST 27x5
(dependent on franchise extension)
AT200 10x4
Assuming only committed procurement in figure (though not unlike a politician to embellish) 369 more carriages.
796 + 369 - 980 = 185 carriages released
Now bit of margin for error and they could have included the 40 optional carriages in that tally but thats not a lot, its either all the old EMU's or all the 170's or if the 40 extras included as well its exactly the tally of all 170s + 314's.
Great post! Really starting to understand some of the details now.
If we add in the 7 x 4 Class 321s that seem to be coming as well (and I reckon the 40 optional will be included in the 23% increase number) that brings our carriages released to a grand total of 253 carriages.
I think we are now also fairly sure the 314s are going to be scrapped in 2017 or 2018 so we can definitely remove those 48 carriages. That leaves 205 to be cascaded from the other fleets.
I suspect we are looking increasingly like the entire Class 170 fleet will be released. The big question for 170s is still what will operate the Fife Circle and Edinburgh - Dundee semi fast services?
How many of the 48 x 2 car 158s are needed to operate Far North / Kyle / Inverness - Elgin / Edinburgh - Tweedbank / West Highland services?
Are there enough units left after those confirmed/suspected 158 routes to operate Fife Circle and Dundee and thus eliminate 170s entirely?
Perhaps not quite but there certainly won't be many 170s left in Scotland by 2019.