Mr. Ciar?n Rogan:

That is why I said it could be driver sickness or something for which we have no immediate cover. In the same way mobile phone coverage can drop out, the coverage of the bus may drop out. It can happen if a bus goes off route because of a demonstration, congestion or something happening in the city. It can happen because there is a failure by the driver to log on. For example, if a bus in Parnell Square is changing drivers and it is not done effectively, it can take a number of minutes for the system to-----