Location : The M4 westbound between junctions J4B and J5 .
Lane Closures : The hard shoulder, lanes 1, 2 and 3 are closed.
Reason : Road traffic collision.
Status : Currently Active.
Time To Clear : The event is expected to clear between 18:30 and 18:45 on 29 March 2026.
Return To Normal : Normal traffic conditions are expected between 18:30 and 18:45 on 29 March 2026.
Lanes Closed : There are three of four lanes closed.
