A CAR flipped over on the A127.
The London-bound carriageway came to a standstill after the car, which was pulling a horse box, collided with a camper van between the junctions for Dunton and Halfway House.
Police and paramedics rushed to the scene just after 11am on Sunday.
It took several hours for the scene to be cleared.
It is not thought anyone was seriously injured in the accident.