Location : The M40 southbound entry slip at junction J15 . Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 23:30 and 23:45 on 16 April 2022. Return To Normal : Normal traffic conditions are expected between 23:30 and 23:45 on 16 April 2022. Lanes Closed : All lanes are closed. Previous Reason : Following an earlier accident.