A421 Black Cat Roundabout

Layout and signage

The NORTH
Peterborough A1 Link
Cambridge (A428)
London
Stevenage A1 Link
Great Barford
 





A1
(A428)
   





A1
  N/A

Lane configuration

LanesLanesLanesLanes

  • Lane 1 terminates.
  • Lane 2 terminates.

LanesLanesLanesLanes

  • Lane 1 continues ahead.
  • Lane 2 continues ahead.

Other events

  • Signs 60mph speed limit begins
  • Signs National Speed Limit begins