Motorists travelling along the M4 near Cardiff faced major disruption on Tuesday morning, November 10, 2026, after a multi-vehicle collision forced the closure of several lanes in both directions and brought traffic to a standstill.
The crash occurred between junction 33 at Capel Llanilltern and junction 32 at Coryton. According to traffic reports, the incident involved multiple vehicles, with debris scattered across the motorway carriageway, creating hazardous conditions for approaching drivers.
The collision initially resulted in all westbound traffic being temporarily held, while multiple lanes were also closed in both directions. The disruption caused significant congestion, with motorists experiencing lengthy delays as emergency services and traffic officials responded.
Traffic monitoring updates reported delays of approximately 30 minutes in both directions. Queues extended towards junction 32 in the westbound direction and junction 34 at Miskin in the eastbound direction, leaving commuters facing difficult journeys during the morning rush.
By 9:02am, reports indicated that the incident had been cleared, although heavy congestion remained on the affected stretch. Traffic Wales camera images showed debris from one of the vehicles spread across the carriageway during the disruption.
A later update at 9:29am confirmed that queues were beginning to ease, particularly on the westbound carriageway near junction 33 and the Cardiff West services. However, drivers were still warned to expect residual delays as traffic gradually returned to normal.
The number of vehicles involved has been reported as multiple, but details about possible injuries, the identities of those involved and the precise cause of the collision have not been provided in the supplied report. Motorists were advised to remain cautious and allow extra time for their journeys while congestion cleared.