Dyma eiriau Ymgynghorydd Brys pediatrig Ysbyty Athrofaol Cymru, Dr David Hanna. Roedd yn siarad â Phrif Swyddog Meddygol Cymru yn ystod ymweliad â'r ysbyty, cyn cyflwyno’r terfyn cyflymder diofyn o 20mya ar ffyrdd cyfyngedig ledled Cymru o ddydd Sul 17 Medi.
Those were the words from University Hospital of Wales’ Paediatric Emergency Consultant, Dr David Hanna. He was speaking to the Chief Medical Officer for Wales during a visit to the hospital, ahead of the introduction of a 20mph default speed limit on restricted roads across Wales from Sunday 17 September.