A coach and a car were involved in a collision on the A44 Oxford Road at Bladon yesterday.
Thames Valley Police were called to the scene at 7.44am after reports of the crash at the A4095 Upper Campsfield Road, at the Bladon roundabout.
But spokeswoman Lucy Billen said the vehicles had gone when officers arrived.
There were reports motorists faced disruption in both directions of the A44 at the time of the crash.
South Central Ambulance Service spokeswoman Michelle Archer said they had not been called.
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