 Since the western link roads were built , a number of major developments have been built , such as the Cardiff Bay Retail Park , <unk> , Celtic Gateway , Cardiff International Sports Village that includes the Cardiff International Pool , Cardiff International White Water and Cardiff Arena , which have all generated additional traffic at the Ferry Road Interchange . In addition , the Leckwith development , which includes Cardiff City Stadium , Cardiff International Sports Stadium and the Capital Retail Park with a new <unk> supermarket , have also significantly increased traffic on the Leckwith Interchange . At the Culverhouse Cross Interchange , older developments such as the <unk> Retail Park , <unk> Retail Park and <unk> Retail Park , including <unk> and Marks & Spencer have also significantly increased congestion along with commuter traffic from the Vale of Glamorgan . From 1989 to 1997 there had been an increase in traffic of 78 % and a further increase of 35 % by 2016 is predicted by the Assembly . The Vale of Glamorgan Council also expressed reservations about the new developments of the Cardiff International Sports Village and the Cardiff City Stadium , which includes the Capital Retail Park . On 18 October , 2006 , the council requested that the WAG assess the existing traffic conditions and future growth in traffic on the network . 
