Pa asesiad y mae'r Gweinidog wedi'i wneud o effaith penderfyniad Trafnidiaeth Cymru i redeg 1 uned dosbarth ceir 153 ar lwybrau Caerloyw i Gaerdydd ar orlenwi?
Wedi'i ateb gan Y Dirprwy Weinidog Newid Hinsawdd | Wedi'i ateb ar 23/05/2023
Transport for Wales do not plan to operate one-carriage trains on the route between Cardiff and Gloucester. However, services were heavily disrupted by the lineside fire on the South Wales main line between Cardiff and Newport. This disruption resulted in rolling stock and train crew being out of position. Transport for Wales had to either cancel this service or to operate it with less capacity than normal.