Location : The M4 eastbound exit slip at junction J4 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 13:45 and 14:00 on 24 September 2021. Return To Normal : Normal traffic conditions are expected between 13:45 and 14:00 on 24 September 2021. Lanes Closed : There is one of three lanes closed.