FOUR separate accidents have caused delays on the A34 northbound.
Three of them were between the Peartree Interchange and Weston-on-the-Green and all there were blocking different lanes.
The fourth was north of the Wolvercote viaduct at 3.15pm and involved two vehicles. A police spokesman said they'd had reports of a child being treated at the scene for a head injury.
There are reports that four vehicles have been involved and that traffic is building up between Wytham Lane and the Islip turn-off.
Queues are backed up to the Botley Interchange, and on the A44 Woodstock Road to the A40 Northern bypass road at Wolvercote Roundabout.