A driver managed to escape with only minor injuries when a tractor overturned and landed on his car.
Emergency crews including the air ambulance were called to the crash on the A10 at Hilgay on Monday morning.
A spokesman for Norfolk Fire and Rescue Service said: “The car was under the tractor, with one person trapped inside the car, which was upside down.
“Heavy rescue equipment and airbags were used to release the casualty.”
Firefighters from Terrington St Clement, Littleport and King’s Lynn and the urban search and rescue team attended the crash, which happened at around 7.30am.
The East of England Ambulance Service sent a rapid response vehicle and two ambulances, as a well as an air ambulance from the East Anglian Air Ambulance (EAAA) charity.
“At the scene three patients were treated and assessed, all of which had sustained minor injuries and were taken to Queen Elizabeth Hospital in King’s Lynn via land ambulances in stable conditions,” the spokesman said.
The A10 was closed at Hilgay for around six hours to allow recovery of the vehicles.
Witnesses are asked to call Norfolk police on 101.