Location : The M4 westbound between junctions J21 and J22 .
Reason : Accident involving an overturned vehicle.
Status : Currently Active.
Time To Clear : The event is expected to clear between 00:15 and 00:30 on 5 August 2025.
Return To Normal : Normal traffic conditions are expected between 00:15 and 00:30 on 5 August 2025.
Lanes Closed : There are lane closures.
