Location : The M1 northbound between junctions J16 and J18 . Lane Closures : Lanes 1 and 2 are closed. Reason : Accident involving a vehicle that has left the carriageway. Status : Currently Active. Time To Clear : The event is expected to clear between 10:15 and 10:30 on 28 June 2021. Return To Normal : Normal traffic conditions are expected between 10:15 and 10:30 on 28 June 2021. Lanes Closed : There are two of four lanes closed. Previous Reason : Following an earlier obstruction involving a broken down vehicle.