As part of this plan key partners, including local authorities and Transport for Wales, have been tasked with developing regional transport plans for all four parts of Wales.
Fel rhan o'r cynllun hwn mae partneriaid allweddol, gan gynnwys awdurdodau lleol a Thrafnidiaeth Cymru, wedi cael y dasg o ddatblygu cynlluniau trafnidiaeth rhanbarthol ar gyfer y pedair rhan o Gymru.