Road accident level data, Cardiff (Southern Way, Ipswich Road, Rhymney River Bridge Road and Newport Road) January 2013 to December 2017
Data ar lefel damweiniau ffyrdd Caerdydd (Southern Way, Heol Ipswich, Heol Pont Afon Rhymni a Heol Casnewydd) Ionawr 2013 i Ragfyr 2017