About 6:40 p.m. daylight savings time, on Monday, August 28, 2006, a 2000 Motor Coach Industries, Inc. (MCI), 45-foot, 55-passenger motorcoach operated by Greyhound Lines, Inc. (Greyhound), transporting 52 passengers and the driver, was traveling northbound on Interstate 87 (I-87) near Westport, New York. The motorcoach had departed the Port Authority terminal in New York City about 1:00 p.m. and was en route to its final destination of Montreal, Quebec. The weather was partly cloudy and the roadway was dry.