Location : The M4 eastbound between junctions J12 and J11 . Reason : Police incident. Status : Currently Active. Time To Clear : The event is expected to clear between 03:30 and 03:45 on 31 August 2021. Return To Normal : Normal traffic conditions are expected between 03:30 and 03:45 on 31 August 2021. Lanes Closed : There are lane closures.