People should be able to make journeys with just one simple ticket that gets them where they want to go, whatever combination of services they need to take to get there.
Dylai pobl allu gwneud teithiau gyda dim ond un tocyn syml sy'n mynd â nhw i ble bynnag maent am fynd, ni waeth pa gyfuniad o wasanaethau mae angen iddynt eu defnyddio i gyrraedd pen eu taith.