School Bus and Dump Truck Collision, Central Bridge, New York, October 21, 1999. Highway Accident Report NTSB/HAR-00/02. Washington, DC. Abstract: On October 21, 1999, about 10:30 a.m. near Central Bridge, New York, a school bus was transporting 44 students and 8 adults on a field trip. The bus was traveling north on State Route 30A as it