The A505 is still closed at the roundabout with the A10 in Royston this afternoon after a car flipped onto its roof.
Police and the ambulance service responded to reports of an incident on the eastbound side of the A505 at about 12.15pm, 200 metres before the roundabout.
An East Anglian air ambulance, two ambulances and an ambulance officer all attended and assessed four patients, three required no further treatment and one patient, a man, was taken to Addenbrooke’s hospital by land ambulance.
The road is still shut while recovery of the vehicle takes place.
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