One lane is closed and there's queueing traffic because of emergency repairs on the M4 Westbound between J27 B4591 (Highcross) and J28 A48 / A467 Forge Road (Tredegar Park). There's congestion to J25 A4042 / B4596 (Caerleon).
One lane is closed because of over running resurfacing works on the M4 Westbound between J33 A4232 (Cardiff West And Services) and J34 A4119 (Miskin).
Traders in Port Talbot say they fear jobs and businesses will be hit hard if the Welsh Government goes ahead with plans to close two motorway junctions that serve the town.
Proposals have been made to close both junctions 40 and 41. The suggestion is being made to reduce bottlenecks and improve safety.
The stretch is one of the oldest pieces of motorway in Wales and it regularly sees long delays. But traders have launched a petition saying the plan would kill their businesses. Sarah Powell has been speaking to some of them.
Paul Watter, from the AA, told ITV News that bottlenecks on motorways can be incredibly dangerous, because they spill back on to the carriageway. He said that it was understandable for work to be carried out to reduce congestion, but it would come with difficulty for the local area.
Residents and traders in Port Talbot fear the closure of the junctions would lead to the town being 'cut off' from business.
Steve Redmore, manager of Aberafan Shopping Centre, said the closure would restrict people coming into the town, which is not needed in the current economic climate.
Traders in Port Talbot have set up a petition against the possible closures of the M4 junctions leading to their town.
Proposals have been made to close slip roads at junction 40 and 41 - two of the main entrances in and out of Port Talbot - for a six month trial over the summer months.
The Welsh Government says it is looking to reduce traffic congestion in the area, but no decisions have yet been made.
A 35 year-old woman is in hospital with "serious injuries" after a collision on the M4 last night, involving a car towing a horse box.
The incident happened at around 9pm on the westbound carriageway between junctions 36 and 37.
It involved a red Nissan Terrano towing a horse box and a grey Vauxhall Insignia. Occupants of both cars were sent to Morriston, Princess of Wales and University of Wales Hospitals.
The horse box became detached, forcing police to block the motorway while the horses were rounded up.
South Wales Police has confirmed the horses were "uninjured."
Update M4:5 fire engines and 2 rescue tenders are now responding to the RTC on M4. RTC involving horse box which has come loose from vehicle
M4 Westbound blocked with queueing traffic due to several horses on road between J36 A4061 / A4063 (Bridgend / Sarn Service Area) and J37 A4229 (Pyle / Porthcawl).
Police have blocked the road, whilst the horses are rounded up.
We are responding to RTC M4 Eastbound Coldra to Magor, take care as we approach from Malpas+Maindee area 07:18
Update M4: There will be delays this morning at the RTC i'm afraid, we have stabilised a vehicle and now preparing to extricate a casualty
Traffic is easing after the earlier accident on the M4 Eastbound between J24 A48 / A449 (Coldra) and J23A B4245 (Magor Services).