Motorway fork sign
A blue sign with a diagram showing a branch off the road ahead and the following text.
Forward destinations: Caerfyrddin; Carmarthen; Abertawe (Gn); Swansea (W) [Hospital (with A&E) symbol] .
Exit destinations: Pontardawe; Abertawe (G); Swansea (N); A4067.
Junction number: 45.
We've just crossed the River Tawe, which gives its name to Swansea (Abertawe means "estuary of the Tawe") and to Pontardawe, which means "bridge on the Tawe".