Dr S Nagabhusan Rao, director of Engineering Staff College of India urged the government to reintroduce double deckers in the Hyderabad city, Andhra Pradesh to minimise transportation problems. Giving the 13th Koka Krishna Mohan Rao endowment lecture on 'Public Transportation of Hyderabad-Problem and Solutions', he said that double deckers and trolley buses would ensure smooth traffic with less amount of pollution as they can accomodate a large number of commuters.