Most of the road schemes currently in development in Wales were conceived before the adoption of Net Zero Wales, Llwybr Newydd the Wales Transport Strategy and Future Wales.
Cafodd y rhan fwyaf o’r cynlluniau ffyrdd sy’n cael eu datblygu yng Nghymru ar hyn o bryd eu llunio cyn mabwysiadu Cymru Sero Net, Llwybr Newydd: Strategaeth Drafnidiaeth Cymru a Cymru’r Dyfodol.