The A34 north of Oxford has now reopened to traffic following a crash this morning between a tanker and a lorry carrying flour.
One driver needed hospital treatment after the two heavy goods vehicles collided near Bicester but his injuries were not life-threatening.
The accident happened at 11.30am on the northbound carriageway between the Weston-on-the-Green turn and junction nine of the M40. The crash led to long tailbacks - with reports of congestion as far south as Didcot.
Martin Dellar, a spokesman for the Highways Agency, said the northbound carriageway was fully reopened at 2.30pm after police accident investigators finished working at the scene, and Highways Agency staff removed debris from the road.
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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