Speeding Study

  • December 13th, 2018

Most Counter-Intuitive Findings

  • Weather Conditions and Speed
    • Lowest % speed related fatalities occur in rain
    • Speed increases wet pavement crash % by a factor of 3.5
  • Impaired Driving and Speed
    • DUI alcohol use increases 69% for speed crashes
    • Reported drug use increases 44% for speed crashes
  • Age and Speed
    • Highest frequency ages, in order: 18, 17, 19, 20, 16
    • Drop-off after 20 is consistent to 33
    • Ages 16-21 cause about 33% of all speed crashes
    • Six years = 6/50 = 12% of the miles driven (approximate)
  • Roadway
    • More county speed fatal crashes than I/S/F combined
    • Trees are most deadly hit objects in speed crashes
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