Location : The M4 westbound entry slip at junction J15 . Reason : Accident involving a vehicle crossing the central reservation. Status : Currently Active. Time To Clear : The event is expected to clear between 07:45 and 08:00 on 2 April 2022. Return To Normal : Normal traffic conditions are expected between 07:45 and 08:00 on 2 April 2022. Lanes Closed : All lanes are closed.