Location : The M4 westbound between junctions J15 and J16 .
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 17:45 and 18:00 on 21 July 2025.
Return To Normal : Normal traffic conditions are expected between 17:45 and 18:00 on 21 July 2025.
Lanes Closed : All lanes are closed.