I extend our thanks to Lord Burns, the Commissioners, and the Welsh Government and Transport for Wales officials who supported them, for their comprehensive and considered reports.
Rwy'n diolch i'r Arglwydd Burns, y Comisiynwyr, a swyddogion Llywodraeth Cymru a Trafnidiaeth Cymru a'u cefnogodd, am eu hadroddiadau cynhwysfawr ac ystyriol.