A wnaiff Llywodraeth Cymru ddarparu copi o lythyr cylch gwaith presennol Trafnidiaeth Cymru?
Wedi'i ateb gan Ysgrifennydd y Cabinet dros yr Economi a Thrafnidiaeth | Wedi'i ateb ar 05/12/2018
Remit letters relating to Transport for Wales can be found on the Welsh Government website at the following link: