The September 11 attacks resulted in service disruptions on lines running through Lower Manhattan . Tracks and stations under the World Trade Center were shut down within minutes of the first plane crash . All remaining New York City Subway service was suspended from 10:20 am to 12:48 pm . Immediately after the attacks and more so after the collapses of the Twin Towers , many trains running in Lower Manhattan lost power and had to be evacuated through the tunnels . Some trains had power , but the signals did not , requiring special operating procedures to ensure safety
September 11 attacks
September 11 attacks
History of the New York City Subway