Transport for Wales will be publically consulting on proposals in early 2017, subject to that consultation process, it is anticipated that the final contract will be awarded by the end of 2017.
Bydd Trafnidiaeth Cymru yn ymgynghori â’r cyhoedd ar y cynigion yn nechrau 2017 a chan ddibynnu ar ganlyniadau’r ymgynghoriad hwnnw, rhagwelir rhoi’r contract terfynol ddiwedd 2017.