Mae teithwyr yma yng Nghymru yn dioddef rhwydwaith annibynadwy, siwrneiau araf a diffyg lle, sy’n golygu bod cyfran lai o lawer yn gallu dewis teithio ar drenau o gymharu â Lloegr a’r Alban.
Passengers in Wales experience poor network reliability, low speeds, and capacity constraints which results in a much smaller proportion of people being able to choose to travel by train than in England and Scotland.