Location : The M4 westbound entry slip at junction J20 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Vehicle tyre change. Status : Currently Active. Time To Clear : The event is expected to clear between 17:00 and 17:15 on 26 July 2021. Return To Normal : Normal traffic conditions are expected between 17:00 and 17:15 on 26 July 2021. Lanes Closed : There is one of two lanes closed.