Location : The M1 southbound between junctions J31 and J30 . Lane Closures : Lanes 1 and 2 are closed. Reason : Accident involving an overturned vehicle. Status : Currently Active. Time To Clear : The event is expected to clear between 20:45 and 21:00 on 16 June 2021. Return To Normal : Normal traffic conditions are expected between 21:00 and 21:15 on 16 June 2021. Lanes Closed : There are two of four lanes closed.