Location : The M1 northbound between junctions J21 and J22 . Lane Closures : Lane four is closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 19:45 and 20:00 on 21 March 2024. Return To Normal : Normal traffic conditions are expected between 20:30 and 20:45 on 21 March 2024. Lanes Closed : There is one of four lanes closed.News Courtesy: highwaysengland.co.uk