Location : The M40 southbound between junctions J4 and J3 . Reason : Accident involving an overturned vehicle. Status : Currently Active. Time To Clear : The event is expected to clear between 17:00 and 17:15 on 7 July 2021. Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 7 July 2021. Delay : There are currently delays of 10 minutes against expected traffic. Lanes Closed : There are lane closures.