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Driver Factors and Collision Warning Systems

Driver Factors and Collision Warning Systems. Introduction. Driver factors Freightliner, specialty bus Collision warning systems NTSB actions NTSB recommendations status. Truck Driver’s Qualifications. Valid Class A CDL, corrective lenses restriction Glasses in use

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Driver Factors and Collision Warning Systems

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  1. Driver Factors and Collision Warning Systems

  2. Introduction • Driver factors • Freightliner, specialty bus • Collision warning systems • NTSB actions • NTSB recommendations status

  3. Truck Driver’s Qualifications • Valid Class A CDL, corrective lenses restriction • Glasses in use • Valid medical certificate • 13 years experience

  4. Bus Driver’s Qualifications • Valid Class B CDL, no restrictions • Expired medical certificate • Medically recertified following accident • Diabetes well controlled by diet, medication • 6.5 years experience

  5. Driver Factors • Freightliner driver • On duty 9.5 hours • Normal sleep pattern, well rested • Specialty bus driver • On duty 8.5 hours • Normal sleep pattern, well rested • Toxicological examinations • Negative for alcohol, drugs

  6. Precollision Conditions • Bright sun, above and behind • Bus brake lights illuminated • Degraded brake light contrast unlikely • No collision warning system

  7. Profile of Rear-End Crashes • One-third of all highway crashes • 90% involve driver inattention • 12% of multivehicle crashes are fatal • 40% of fatal crashes involve commercial vehicles

  8. Capabilities of CWS and ACC • Collision warning system (CWS) • Detects slowed, stopped objects ahead • Alerts the driver to take action • Adaptive cruise control (ACC) • Detects slowing vehicles ahead • Cruise control in use • Automatic throttle closure, engine braking

  9. NTSB Actions • 1995 accident investigation • Recommended truck CWS testing • Closed – Unacceptable Action in 1999 • 1999 public hearing • Advanced safety technologies • 2001 special investigation report • 9 rear-end crashes, 20 fatalities

  10. NTSB Recommendations H-01-06 • Complete CWS, ACC rulemaking H-01-07 • Require CWS in new commercial vehicles

  11. Action by NHTSA • July 2005 response to NTSB • Completed CWS, ACC field testing • Evaluating test data • Classified as Open – AcceptableResponse • Report not published in 2005 • Anticipated in May 2006

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