A man has been seriously injured in a crash in Wainuiomata, Lower Hutt.
Emergency services were called to the crash around 2:30pm when the man's car was hit as he backed out of his driveway on Wise St.
The force of the impact caused his car to flip onto its side and the man sustained injuries to his head and his arm.
His arm was trapped under the vehicle in the accident but was freed by emergency services.
The man was taken to Wellington Hospital by helicopter.
The three occupants of the other vehicle sustained moderate injuries and were taken to Hutt Hospital.
A serious crash unit investigation has begun.