M4 J29 Castleton Interchange

Layout and signage

      A48(M)   Caerdydd (Dn a D)
Cardiff (E & S)
A48(M) Link

Lane configuration

LanesLanesLanesLanesLanes

  • Lane 1 continues, with option to exit.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.