We continue to believe 20mph is the right speed limit in places such as near schools, hospitals, nurseries, community centres, play areas and in built-up residential areas.
Rydyn ni'n dal i gredu mai 20mya yw'r terfyn cyflymder cywir mewn ardaloedd o amgylch ysbytai, ysgolion, meithrinfeydd, canolfannau cymuned, mannau chwarae ac ardaloedd preswyl poblog.