Location : The M4 westbound between junctions J15 and J16 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 19:30 and 19:45 on 27 April 2026.
Cause : Accident involving a vehicle that has left the carriageway.
Delay : There are currently delays of 1 hour against expected traffic.
