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Location : The M4 westbound between junctions J4 and J4B .
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 16:45 and 17:00 on 18 March 2026.
Return To Normal : Normal traffic conditions are expected between 16:45 and 17:00 on 18 March 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Lanes Closed : There are three of five lanes closed.
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