A blue sign with a diagram showing a branch off the road ahead and the following text.
Forward destinations: SOUTH WALES; Cardiff; Newport (M4) .
Exit destinations: .
Junction number: 1.
This is the M49’s ghost junction. For many years this motorway had no junctions at all - now, thanks to a property dispute, it has a £50m interchange that doesn’t connect to anything. A line of barriers will stop you exiting here.