Dubai International, the busiest airport in the Middle East, has announced two measures to contain noise. First, it announced the phased withdrawal of older generation aircraft that do not conform to international noise and emission standards set by the International Civil Aviation Organisation. ICAO classified Chapter 1 and 2 aircraft will be banned from operating cargo flights at Dubai International from October 31, 2010 and passenger flights effective March 27, 2011 consistent with the International Air Transport Association's seasonal schedule change. However, these aircraft will be allowed to continue operations at Dubai World Central-Al Maktoum International airport until April 1, 2012. Second, it has undertaken a "silent airport" project that will curtail the number of public announcements made in all three terminals.