Location : The M4 westbound exit slip at junction J15 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Vehicle fire. Status : Currently Active. Time To Clear : The event is expected to clear between 21:00 and 21:15 on 23 September 2021. Return To Normal : Normal traffic conditions are expected between 21:00 and 21:15 on 23 September 2021. Lanes Closed : There is one of two lanes closed.