Drivers are warned to expect delays on the A1123 Huntingdon Road at Banks End, Wyton after warnings of a crash involving two cars.
There are reports that the road is partially blocked and slow moving traffic in both directions between the A141 junction and the Huntingdon Road junction.
Cambridgeshire police were called to the incident at 11.20am this morning (Friday) to reports of a head on collision involving a blue Citroen Saxo and a grey Volkswagen Polo.
The extent of injuries is not known at this stage.
Motorists are being advised to avoid the area and to expect delays