All non-military airplane traffic in the United States was grounded, and the stock exchange on Wall Street was closed until Monday, September 17. The White House, the UN headquarters, the Sears Tower in Chicago, the Transamerica building in San Francisco, the Renaissance Center in Detroit, are evacuated, along with parts of Washington, D.C., and New York City and many other private and public buildings.
National landmarks across the United States, including the Washington Monument and the Statue of Liberty, closed, as did the Virginia State Capitol. The Supreme Court closed; Justices were taken into protective custody, as were various senators and congressmen. Heightened security remains
All train service through Union Station was been suspended. All schools in Maryland closed.
Broadway theater shows were cancelled until Thursday evening. They resumed with dimmed marquees.
Most major US sporting events are cancelled until the Monday following, including Major League Baseball, the National Football League games, and NASCAR events.
Air traffic was suspended until Thursday. First stranded planes were allowed to go to their intended destinations, then limited service resumed. On Thursday night the New York area airports (JFK, La Guardia, Newark) were closed again, and were reopened Friday morning.
Reagan airport (in Washington, D.C.) is still closed one week after the attack.
Beginning September 27, one-occupant cars were banned from crossing into Lower Manhattan from Midtown on weekday mornings, in an effort to relieve some of the crush of traffic in the city (the morning rush hour was lasting from 5:30 AM to noon), caused largely by the increased security measures put in place.
The Commonwealth Heads of Government Meeting, a meeting of the heads of state of the nations of The Commonwealth to be held in Brisbane, Australia, was postponed (As of November 2001, it has been rescheduled to March 2002 and moved to a holiday resort outside Brisbane involving a more restricted program). The organisers of the meeting claimed the cancellation was not so much a fear of terrorist attack on the meeting itself, but a desire by many Commonwealth leaders to stay at home in case of any further crisis-making world events (such as the commencement of overt military action in Afghanistan or elsewhere).
Greyhound closed nationwide bus service at 7:45 AM EDT on October 3, after a man slit the throat of a bus driver, causing the bus to crash, killing four passengers.
See also World economic effects.
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