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Human Performance

This overview explores critical aspects of driver fatigue, particularly related to motorcoach operations. It addresses human performance drivers, the importance of valid licensing and medical cards, and the implications of an inverted work/rest schedule. Key indicators of fatigue include driver statements and passenger observations, revealing a lack of initial response during an accident. This analysis also reviews previous recommendations for fatigue management, such as dedicated fatigue technology assessments and dissemination of awareness materials, ensuring the safety of drivers and passengers alike.

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Human Performance

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  1. Human Performance

  2. Driver Information • Valid license and endorsements • Intrastate restriction • Valid medical card • 3.5 months driving motorcoaches • No evidence of drug/alcohol use

  3. Driver’s Work/Rest Schedule • 456 miles, 10.5 hours • Accident trip was overnight run • Overnight runs typical • Inverted wake/rest schedule • Humans naturally diurnal • Daytime sleep problematic

  4. Other Indicators of Fatigue • Driver’s initial statement • Passenger statements • No initial braking or steering • Driver’s lack of explanation • Overcorrection

  5. Previous Recommendations • H-99-4a: Fatigue video should include inverted duty-sleep information • Classified Closed-Acceptable • After Victoria, Texas, accident: • Updated information available • Improved distribution methods

  6. Previous Recommendations • H-08-13: Fatigue technologies plan • Classified Open-Unacceptable • H-08-14: Fatigue plan assessment • Classified Open-Acceptable

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