Mr. Peter Walsh:

For example, Luas cross-city was being constructed through the streets. The contractor would come up with the means of taking possession of a street and carry out the construction of that piece of rail through that section of the street and organise the traffic management. It is only possible to predict to a certain extent how that would operate. The Garda might review it and determine it to be too dangerous because it is unacceptable for pedestrians to be making their way out into the traffic. We need to be able to decide to take it down and start again.