Dros yr haf, mae’r Fframwaith Gwella Metro wedi’i ddatblygu gan Lywodraeth Cymru mewn cydweithrediad â Trafnidiaeth Cymru ac Awdurdod Trafnidiaeth Rhanbarth Prifddinas Caerdydd (CCRTA).  Ei bwrpas yw helpu i nodi y prif feysydd a choridorau trafnidiaeth sy’n flaenoriaeth.
Over the summer, the Metro Enhancement Framework has been developed by the Welsh Government in collaboration with Transport for Wales and the Cardiff Capital Region Transport Authority (CCRTA). Its purpose is to help identify key areas and priority transport corridors.