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Rollover of Truck-Tractor Semitrailer and Collision with Motorcoach on Interstate 94, Wisconsin

On October 16, 2005, a serious accident occurred on Interstate Highway 94 near Osseo, Wisconsin involving a rollover of a truck-tractor semitrailer and a collision with a motorcoach. The investigation, led by David S. Rayburn and a team of experts, examined factors including highway conditions, vehicle performance, operator fatigue, and survival factors. The truck driver, exhibiting signs of severe fatigue and having slept less than 5 hours prior to the incident, caused the vehicle to drift from the right-hand lane at approximately 1:58 a.m.

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Rollover of Truck-Tractor Semitrailer and Collision with Motorcoach on Interstate 94, Wisconsin

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  1. Truck-Tractor Semitrailer Rollover and Motorcoach Collision With Overturned Truck, Interstate Highway 94 Near Osseo, Wisconsin October 16, 2005

  2. Introduction David S. Rayburn

  3. Investigative Team • Robert Accetta – Forensic Mapping and Accident Reconstruction • Dan Walsh – Highway Factors • Jennifer Morrison – Vehicle Factors • Burt Simon – Human Performance • Hank Hughes – Survival Factors • Jim LeBerte – Motor Carrier Operations

  4. Investigative Team, Cont’d. • Mitch Garber, M.D. – Medical Factors • Chris Voeglie – Electronic Data Recorders • Kris Poland, Ph.D.; Dan Horak, Ph.D.; and Shane Lack – Vehicle Simulation Study • Jana Price, Ph.D. – Fatigue Technology Countermeasures • David S. Rayburn – Investigator-in-Charge

  5. Report Development Staff • Gwynne O’Reagan – Editor • Robert Molloy, Ph.D. – Audio Visuals • Julie Perrot – Safety Recommendations • Meg Sweeney, Ph.D. – Project Manager

  6. Parties To The Investigation • Federal Motor Carrier Safety Administration • Wisconsin Department of Transportation • Wisconsin State Patrol • Whole Foods Market • Chippewa Trails, Inc. • Haldex Brake Products Corporation • Bendix Commercial Vehicle Systems, L.L.C. • Motor Coach Industries, Inc. • Ryder Logistics and Transportation

  7. Safety Issues • Operator Fatigue • Fatigue Technologies and Countermeasures • Collision Warning Systems

  8. View of Accident Scene

  9. Accident Description • 7:30 p.m., October 15, 2005 • 436-mile trip from Munster, Indiana, to Minnesota • At 1:58 a.m., had completed 323 miles of trip

  10. Tractor-Trailer Departure and Overturn

  11. Accident Description • 11:00 p.m., left University of Wisconsin near Whitewater on 225-mile trip • Completed 195 miles • In right-hand lane of I-94 • No precrash skidmarks but passengers felt deceleration

  12. Motorcoach Collision Sequence (1)

  13. Motorcoach Collision Sequence (2)

  14. Motorcoach Collision Sequence (3)

  15. Motorcoach Collision Sequence (4)

  16. Motorcoach Collision Sequence (5)

  17. View of Motorcoach

  18. Truck Driver Activities

  19. Truck Driver Fatigue • At most, the truck driver obtained 12.5 hours of sleep in the 2 days before the accident • Less than 5 hours of sleep in last sleep period • Was awake for at least 15 hours before the accident • Sleep was disrupted by alcohol use • Accident occurred at 1:58 a.m.

  20. Truck Driver Fatigue, Cont’d. • Driver said he was “pulling over” • Truck traveling about 66-70 mph • Roadway departure was at 3 degrees • Witnesses observed truck drifting • Driver was asleep

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