Commuters wait to travel as other commuters alight at a Delhi Metro station in New Delhi on July 28, 2012. Over two million passengers Travel by Delhi metro and 2500 train trips are made each day. A major mock drill in 11 Metro stations across the National Capital Region to check the preparedness of various agencies in case of an emergency. This is the first time that the Delhi Disaster Management Authority (DDMA) undertook such a major exercise without making public the exact timing of the drill. (AFP Image)