Location : The M1 northbound between junctions J23A and J24 . Lane Closures : Lanes 2, 3 and 4 are closed. Reason : Accident involving an overturned vehicle. Status : Currently Active. Time To Clear : The event is expected to clear between 00:00 and 00:15 on 3 July 2021. Return To Normal : Normal traffic conditions are expected between 00:00 and 00:15 on 3 July 2021. Lanes Closed : There are three of four lanes closed.