Dechreuodd yr ymgynghoriad, sy'n canolbwyntio ar opsiynau i gael gwared ar y cylchfannau wrth Gyffyrdd 15 ac 16, ddydd Llun 4 Mehefin a daw i ben ddydd Llun 28 Awst.
The consultation, which looks at options to remove the roundabouts at junctions 15 and 16, began on Monday 4 June and comes to an end on Monday 28 August.