Pa drafodaethau y mae'r Gweinidog wedi'u cael gyda Trafnidiaeth Cymru i fynd i'r afael â phryderon iechyd a diogelwch ynghylch teithio ar drenau yn ystod tywydd poeth?
Wedi'i ateb gan Y Dirprwy Weinidog Newid Hinsawdd | Wedi'i ateb ar 27/06/2023
I regularly meet with Transport for Wales and met with the Chief Executive and Chairman last week on a range of operational matters. As part of our investment of £800m for a brand new fleet, all of the new trains are fitted with air conditioning making journeys in hot weather more comfortable for passengers.