Shay Brennan (Dublin Rathdown, Fianna Fail)

Going back to value for money, I might draw on a project in my constituency to illustrate this, but I am making a broader point. I have referred to it in the infrastructure committee also. It has been much debated over the past decade that the Luas green line needs to be upgraded to a full metro. The infrastructure is there to do it. The underlying system was built to take an upgrade to a full metro. Furthermore, this will have to happen within the next ten years at most given the amount of development in the area and the projected usage. The economics would suggest that if this is done at the same time as the Dublin metro, it will come in at a fraction of the cost of the two projects being done independently. In other words, I mean a scenario where the Dublin metro goes ahead and we come back in five to ten years and start work on the green line metro upgrade. How will the Department make the decision to either proceed with or defer the green line upgrade on the basis of what I have just outlined?