A national 20mph limit will come into force in Wales from next year. A vote was held in the Senedd today (July 12) about Welsh Government plans to residential roads and busy pedestrian streets 20mph which passed. The Welsh Government say it will reduce the …A national 20mph limit will come into force in Wales from next year. A vote was held in the Senedd today (July 12) about Welsh Government plans to residential roads and busy pedestrian streets 20mph which passed. The Welsh Government say it will reduce the …