It doesn't - For journeys 13 stages or less you need to tell the driver your destination and then hold your Leap Card to the validator on the driver’s ticket machine. The correct fare will be deducted for your journey.
For journeys over 13 stages / Airlink / Nitelink you use the Validator on the right hand side as you enter the bus. The appropriate fare will then be deducted from your credit.
Click here for the Dublin Bus fare calculator to work out the number of stages for your journey.
road_high Registered User
Oh great thanks. I'll be option B I think, pretty sure Heuston to UCD is over 13 stages!
Losty Dublin Registered User
The seven day ticket doesn't limit you to any specific train at any specific time unlike an online booking. Just walk on and board the train as you please.
Googled this for you. It's exactly 13 stages to the UCD stop on the stillorgan road, so the fare is 2.15 which you get from the driver. The machine on the side will charge you 2.80.
Just say UCD or even 2.15 to the driver and you'll get the right ticket
Carawaystick Registered User
Place your leapcard on the green validator while talking to the driver