Pa gyfran o'r trenau newydd sy'n cael eu defnyddio ar hyn o bryd gan Trafnidiaeth Cymru, yn benodol trenau Dosbarth 197, Dosbarth 230, Dosbarth 231 a Dosbarth 756, a adeiladwyd yng Nghymru?
Wedi'i ateb gan Y Dirprwy Weinidog Newid Hinsawdd | Wedi'i ateb ar 14/11/2023
CAF Class197 trains - which are assembled in Wales – provide the backbone of Transport for Wales new and upgraded fleet.
This means c. 70% of all new trains currently in daily use by Transport for Wales were assembled in Wales.