A blue sign with a diagram showing a branch off the road ahead and the following text.
Forward destinations: London; Cas-gwent; Chepstow.
Exit destinations: Casnewydd; Newport; A48; Risca; Brynmawr; A467.
Junction number: 28.
The Newport Bypass starts here, one of Wales's oldest motorways. There have been extensive works to widen and improve it over the years but it remains one of the most stubborn bottlenecks on the M4.