The A40 in West Oxfordshire is closed in both directions following a two-vehicle accident.
The collision happened at the Burford roundabout and the A40 is closed in both directions.
Thames Valley Police officers are re-directing the traffic and there is congestion between the roundabout and White Hill.
Ambulances have been called and there are reports of injuries, Thames Valley Police spokeswoman Charlotte Redman said, but she did not have any more details.
Get the latest on this incident with our Live Travel Page.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereComments are closed on this article