Overcrowding on trains from the west today reinforce the point that rail will be used if the service is available. The counter argument is often made that we dont have the population for railways in IE. This is not the case, rail is the future but is currently run in a minimalist way and development like doubling track in places rarely happens.
I have used the network on all Ireland days and it was thronged yet IR say that "demand was unanticipated" this cant be the case as they have the data.
It looks as if the system is under strain but this should not happen if planning was in place to meet growing demand.