How does this work on the bus network, which has some form of a zonal system (at least in Cork and for Bus Eireann services in Dublin). If you want to go beyond your ticket, do you have to pay for the whole journey. e.g. If a Dublin Red Zone ticket holder wants to travel to Clane, are they liable for the whole fare or just from the edge of the Red Zone?
I think more ticket holders have an ePurse balance than you'd think, however, for most, it's for completely different services. For example, my commuter ticket covers me for all buses in Cork, but I still have an ePurse balance that I have used for Midleton Rail and on LUAS, DART and Dublin Bus. Extending outside your permitted travel area on your regular service provider is obviously more complex.
Is there any hope of a zonal system being brought in across all travel operators at any time in the foreseeable future?