One lane is closed and there is very slow traffic because of an accident involving two cars and a van in the M4 Brynglas Tunnel Eastbound between J26 (Malpas Road) and J25A (Newport/Grove Park Roundabout).
There is congestion on to J28 (Tredegar Park).
Two lanes are blocked and there is queueing traffic because of an overturned vehicle on the M4 Westbound at J33 (Cardiff West And Services).
Lanes two and three (of three) are blocked. The vehicle has overturned and come to rest between lanes two and three.
It is opposite where the entry slip merges with the main carriageway.
Vehicle overturned M4 westbound between junctions 33-34 - delays
One lane closed and there is very slow traffic on the M4 Eastbound between J47 (Penllergaer/Swansea West Services) and (Llangyfelach).
A vehicle has left the carriageway and gone down an embankment. Lane two is closed while emergency services attend the scene on the hard shoulder.
The accident on the M4 Eastbound exit slip road at J33 A4232 (Cardiff West And Services) has been cleared.
There is queueing traffic after an earlier broken down vehicle on the M4 Eastbound between J25 (Caerleon) and J24(Coldra)
There is congestion to J29 A48(M). All lanes have been re-opened.
There are reports of one lane being blocked and slow traffic after an accident on the M4 Westbound between J45 (Ynysforgan) and J46 (Llangyfelach).
Two lanes are closed and there is queueing traffic for eight miles after a multi-vehicle accident on the M4 Eastbound before J23A.
There is congestion through the Brynglas Tunnel to J26 (Malpas Road). Travel time is around 90 minutes.
All three (of three) lanes were closed. Lane one has re-opened.
There are long queues on the M4 Eastbound after an accident just before J23A (Magor Services).
Three lanes are closed and traffic is using the hard shoulder. There are queues back to the Brynglas Tunnels.
There is slow traffic and one lane closed after a multi-vehicle accident on the M4 Eastbound before J23A (Magor Services).
There is queueing traffic and a lane is blocked because of a broken down van on the exit slip road Eastbound at J33 of the M4 (Cardiff West And Services)