Location : The M4 westbound between junctions J11 and J12 .
Lane Closures : The hard shoulder, lanes 1 and 2 are closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 20:45 and 21:00 on 19 March 2026.
Return To Normal : Normal traffic conditions are expected between 20:30 and 20:45 on 19 March 2026.
Lanes Closed : There are two of four lanes closed.
