So, in effect there is no flexibility at all. You can only have 15 sets greater than 3 cars and there are already 15 6-car sets. The usual brilliant forward planning there from Irish Rail.
The fixed consists are hardly flexible if you can't send a 6-car set to Rosslare and there is no way of making up a set that will fit on platforms. There is also another constraint in the some of the 6-car sets can't be used on certain services because of the lack of catering and "first class". Why exactly some services (over 3 hours long) don't deserve catering and first class is beyond me, but that is the way it is.
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