One lane of the M4 near Newport is closed after a car collided with the central reservation.
It has happened on the eastbound carriageway between junction 24 Coldra and junction 23A at Magor Services.
Traffic cameras are showing that congestion has already built up in the area.
They are showing a car has collided with the central reservation on the bend not far from junction 24.
There is a lorry on the hard shoulder but its not clear if its involved.
Monitoring system Inrix is showing that queues are back to junction 25 Caerleon.