Two lanes and a slip road on the M4 near Cardiff have been blocked following a collision, causing heavy traffic during the evening rush hour on what is the hottest day of the year in Wales.
Crash Location and Impact
The accident occurred on the eastbound carriageway between junction 34 Miskin and junction 33 Capel Llanilltern. Traffic Wales, the agency responsible for monitoring Welsh roads, reported that lanes one and two, along with the slip road, are blocked due to the collision.
Camera footage shows significant congestion in the area, with motorists experiencing delays. The incident comes as Wales sees temperatures approaching 30°C, marking the hottest day of the year so far.
Authorities Advise Caution
Traffic Wales has urged drivers to approach the area with caution and consider alternative routes if possible. The agency continues to monitor the situation and provide updates as the scene is cleared.



