A blue sign with a diagram showing a branch off the road ahead and the following text.
Forward destinations: Caerdydd; Cardiff; Pen-y-bont; Bridgend.
Exit destinations: Port Talbot; Cymer; A4107.
Junction number: 40.
A right turn here will get you straight into the densely packed terraced streets of Port Talbot. A left will have you on a single track road through the hills. There really is no in-between in some parts of Wales.