why is port talbot closed
Image caption The aim of the junction closure is to improve traffic flows on the M4 around Port Talbot. A junction of the M4 motorway in south Wales will be closed as part of a trial to ease congestion.The closure of junction 41 at Port Talbot starts this summer and aims to boost traffic flow in both directions.Economy and Transport Minister Edwina Hart said studies predicted it would increase the capacity of the M4 by 11% westbound and 2% eastbound.anagers at Aberafan shopping centre in Port Talbot have previously said they were against the idea of closing junctions because it would lead to customers heading elsewhere. The Welsh government has been carrying out a study into traffic flows around the Port Talbot area.