The Senedd passed the legislation (The Restricted Roads (20 mph Speed Limit) (Wales) Order 2022) to bring in the new default speed limit across Wales by an almost two-thirds majority.
Gwnaeth y Senedd basio'r ddeddfwriaeth (Gorchymyn Ffyrdd Cyfyngedig (Terfyn Cyflymder 20 mya) (Cymru) 2022) i ddod â'r terfyn cyflymder diofyn newydd ledled Cymru o fwyafrif o bron i ddwy ran o dair.