Motorway gantry sign
A gantry spanning the motorway with blue overhead signs indicating one lane exiting and two continuing ahead, and the following text.
Left lane destinations: Casnewydd; (Dn) ; Newport (E) A48 Trefynwy; Monmouth A449 .
Right-hand two lanes destinations: Caerdydd; Cardiff M4 .
Junction number: 24.
This is Coldra Interchange, where traffic from the English Midlands joins us. The motorway gets a lot busier from here.