Mae Comisiwn Trafnidiaeth De-ddwyrain Cymru heddiw wedi lansio 'Dweud eich Dweud' – arolwg ar-lein i gasglu syniadau ac awgrymiadau ar gyfer mynd i'r afael a thagfeydd ar yr M4 a gwella trafnidiaeth ar draws yr ardal.
The South East Wales Transport Commission has today launched ‘Have your Say’ an online survey to gather ideas and suggestions for tackling congestion on the M4 and improving transport across the region.