Speeding Study
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