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Human Performance

Human Performance. Dennis Collins. Human Performance Issues. General information Driver’s head congestion Accident trip DriveCam II data Summary. General Driver Information. Valid license, years of experience 71 years old with valid medical certificate

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Human Performance

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  1. Human Performance Dennis Collins

  2. Human Performance Issues • General information • Driver’s head congestion • Accident trip • DriveCam II data • Summary

  3. General Driver Information • Valid license, years of experience • 71 years old with valid medical certificate • Obstructive sleep apnea (OSA) in personal medical records • Reported head congestion in the 3 days prior to accident trip

  4. Driver’s Head Congestion • Runny nose, head congestion • Driver believed he had cold • 7,000+ foot altitude change • Consistent with altitude sickness • Congestion interfered with use of CPAP device while in Telluride • Sleep quality poor

  5. The Accident Trip • Awoke 6:45 a.m., began trip at 3:15 p.m. • Stopped to remove chains from bus • Interviewed passengers said: • Drifted onto shoulder • Steering caused objects to slide • Passengers concerned about speed

  6. DriveCam II System • Forward view • Audio • Forward/lateral acceleration • Interior view • No hands, steering wheel • 20 seconds (10 before crash)

  7. DriveCam II Interior Video • Cannot tell if driver showing signs of fatigue • Two steering inputs to the left • Objects in motorcoach move and passengers react • Driver only reacts as crash occurs–after passengers

  8. Summary • Reduced quality sleep 3 nights prior to crash • Long day with long period of vigilance • Vehicle’s excessive speed • Reduced situational awareness • Slowed/delayed reactions

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