Traffic from the A14 East and wishing travel north would have previously used the A14 northern spur to access the A1 ( M ) at Alconbury .
East and west traffic on the A14 uses the roundabout to join the A1 southbound and to continue on the A14 .
Traffic from the A14   and wishing travel north would have previously used the A14 northern spur to access the A1 ( M ) at Alconbury .
East and west traffic on the A14 uses the roundabout to join the A1 southbound and to continue on the A14 .