Motorists are facing significant delays as the M4 motorway has been closed following a serious collision involving an overturned lorry. The incident occurred early this morning, with police alerted at approximately 5am. The closure affects the westbound carriageway between Junction 37 (Pyle) and Junction 38 (Margam).

A spokesperson for South Wales Police stated, "We're at the scene of a serious collision on the M4 westbound just prior to junction 38. The road is currently closed from junction 37 onwards and from junction 38 eastbound so that emergency services can access the incident. It is expected to remain closed for some time; please avoid the area and use alternative routes where possible. We're grateful for your patience."

As of 08:29, Traffic Wales South confirmed that the westbound carriageway remains closed, while the eastbound lane has reopened. Earlier updates indicated that the M4 was closed in both directions, causing severe congestion.

According to AA Traffic, motorists are experiencing delays of up to 73 minutes on the M4 near Porthcawl, prior to the crash site. The average speed in the area has dropped to just five mph.

Traffic monitoring system Inrix reported that the accident has resulted in queueing traffic from Junction 38 A48 (Margam) to Junction 37 A4229 (Pyle/Porthcawl). Congestion is also building through Pyle as drivers seek alternative routes.

Authorities are advising all motorists to avoid the area and plan for extended travel times as emergency services continue to manage the situation.