Location : The M25 clockwise between junctions J17 and J18 . Lane Closures : Lane four is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 17:45 and 18:00 on 14 September 2021. Return To Normal : Normal traffic conditions are expected between 17:45 and 18:00 on 14 September 2021. Lanes Closed : There is one of four lanes closed.