The deadly Amtrak train derailment in Philadelphia triggered widespread delays and congestion along one of the nation's busiest travel corridors Wednesday, spurring thousands of commuters to change or cancel plans.
Bus lines and short-haul airlines did brisk business as travelers searched for alternatives.
Amtrak said Wednesday that service would be affected at key points in the company's Northeast corridor, a line known as "the busiest railroad in North America," with more than 2,200 trains operating over some portion of the route each day.
Amtrak announced that there would be no service between New York and Philadelphia as a result of the incident and limited service between Washington and Philadelphia; Harrisburg, Pa., and Philadelphia; and New York and Boston.
The move comes after Northeast Regional Train 188 derailed as it headed around a turn in Philadelphia on Tuesday night on a route from Washington to New York. Six cars came off the tracks, overturning and killing six passengers and injuring others, some critically.
The deadly wreck took place on the busiest passenger line in the nation -- a 456-mile corridor along the East Coast connecting Washington, Philadelphia, New York and Boston with trains regularly reaching speeds of up to 150 mph.