Sir: The Lyari Expressway is open for traffic coming from Sohrab Goth to Mauripur for 24 hours, but 60 to 70 per cent movement is between 7:00 am and 12 noon. After that, the traffic drops. The National Highway Authorities (NHA) should think of using this track for downward traffic during peak evening hours from 4:00 pm to 8:00 pm or so. This would reduce the traffic rush on city roads plus the NHAs’ revenue, by way of toll tax, will multiply three times. Murtaza Bhatti Karachi