Did you see anything around 4.30pm on Thursday on the Buckingham bound carriageway of the A421, H8 Standing Way, at Furzton?
The pedestrian, a man in his fifties was hit by a BMW X3 and was taken to the John Radcliffe Hospital with serious but non-life threatening injuries, where he remains.
The occupants of the car, a black BMW X3, were not injured.
Investigating officer, PC Ian Stevens, of Milton Keynes Roads Policing, said: “We are appealing for witnesses to this incident, where a man suffered serious injuries and is in hospital.
“We would like to speak to anyone who was in the area at this time and may have seen this incident.”
Anyone with information is asked to call 101 quoting URN 792 27/12.
