A pedestrian has suffered serious injuries after being hit by a van.
The crash happened just after 8am on the A4130 in Didcot near the Hadden Hill Golf Club.
Thames Valley Police and South Central Ambulance Service were both called to the scene.
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Officers closed the road as the pedestrian was treated by paramedics.
A Thames Valley Police spokesperson confirmed the pedestrian was left seriously injured.
There were no other injuries caused to anyone else from the incident.
A spokesperson for the South Central Ambulance Service said: "We no longer provide information on these type of incidents."
Oxon Travel, who provide travel and transport updates and information for Oxfordshire Council, told drivers to "please approach with caution and expect delays".
Drivers experienced delays between the roundabout at Broadway and the junction with Long Wittenham Road
The road reopened at around 10am.
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