Swansea Council is urging people attending tonight's Kings of Leon concert to plan their journeys carefully to avoid possible travel disruption.
The American rockers are performing at the Liberty Stadium as part of a worldwide tour.
"Events often lead to congestion around the stadium, and so concert goers are urged to plan your route, arrive in plenty of time and use official travel options" said a spokesperson.
"A free shuttle bus service will operate to and from High Street train station".
The A4067 dual carriageway opposite the Liberty Stadium will be closed for "at least" 30 minutes after the end of the concert.
Park & ride sites at Felindre and Fabian Way will open two hours before the stadium gates, while the High Street multistorey park & ride will be open throughout the day.