O’r holl drafnidiaeth gyhoeddus yng Nghymru, bysiau sy’n cael eu defnyddio fwyaf. O bob 4 taith ar gludiant cyhoeddus, mae 3 ar fws sy’n cyfateb i ryw 100 miliwn o deithiau teithwyr y flwyddyn.  Mae gan fysiau rôl allweddol o ran cysylltu cymunedau, lleihau allyriadau a chynnal gweithgarwch economaidd, ond yn bwysicach na hynny efallai, maen nhw’n cefnogi rhai o’n cymunedau a’n hunigolion mwyaf anghenus ledled Cymru.  Mae bysiau’n ganolog i’n nod o ddarparu system trafnidiaeth gyhoeddus aml-foddol, integredig, carbon isel o ansawdd uchel.
Buses are the most used form of public transport in Wales.  They account for 3 out of 4 journeys made by public transport, allowing around 100 million passenger journeys a year.  They have a key role in connecting communities, reducing emissions and supporting economic activity, but perhaps most crucially of all they provide a critical support system for some of the most deprived communities and individuals across Wales. As we move forward buses are central to our ambition for a high quality, multi modal, integrated and low carbon public transport system.