The Situation 963000 drivers aged 1619 involved in crashes in 2013 Resulted in 383000 injuries and 2865 deaths Driver behavior and actions immediately prior to the crash are difficult to ascertain after the fact ID: 781955
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Slide1
March 2015
Using Naturalistic Driving Data to Assess the Prevalence of Environmental Factors and Driver Behaviors in Teen Driver Crashes
Slide2The Situation
963,000 drivers aged 16-19 involved in crashes in 2013
Resulted in 383,000 injuries and 2,865 deaths
Driver behavior and actions immediately prior to the crash are difficult to ascertain after the fact
Some key factors may be systematically under-reported in the national statistics
Previous naturalistic studies have observed only a small number of moderate-to-severe crashes
Very few teens
Slide3Dr. Dan McGehee
University of Iowa
AAA Foundation for Traffic Safety
Largest naturalistic study of teen crashes in history
Released in March 2015
Slide4Overview
Researchers from the University of Iowa examined data from teen driver crashes captured on the Lytx Drive Cam in-vehicle video camera system
Drivers 16-19 who were participating in a program using a DriveCam
Mostly from the Midwest
Crashes occurred between August 2007 and July 2013
Results are based on examination of 1,691 eligible crashes
Video was examined for 6 seconds preceding the crash
Major crash types examined:
Single vehicle loss of control (LOC)
Single vehicle road departure
Rear-end
Angle (front-to-side)
Slide5Major Factor:
Inattention/DistractionDriver distracted in
58%
of crashes
NHTSA data: 14%
Major distractions
Passengers
Cell Phone
Unknown person/object outside of vehicle
Slide6#1 Distraction: Passengers
Passengers in vehicle in ~40% of crashes overall85% teens, some younger, very few adults (<5%)
Driver conversing/interacting/attending to passengers in 15% of crashes
Slide7#2 Distraction: Cell Phones
Present in 12% of crashes overallNHTSA data: 1.1%
Varied by crash type
34% of run-off-road crashes involved phone
1
8%
of rear-end crashes involved phone
- Drivers using phone had eyes off the road for 4.1 seconds
Slide8Cell Phone & Reaction Time
Drivers using phone took more than full second longer to react than drivers not using phone (3.4 sec vs.
2.3 sec)
> 50% of drivers using phone showed no reaction whatsoever (no brakes, no steering) before crashing into vehicle in front of them!
(Rear-end crashes only)
Slide9Other Key Findings
Decision errors (failing to yield right of way, running stop signs, and driving too fast) were involved in 66% of crashes
Driver was driving too fast for conditions in 79% of single-vehicle crashes
Following too closely in 36% of rear-end crashes
Failed to yield to another vehicle in 43% of angle crashes
Slide10Implications
Distraction due to cell phone use appears to be much more prevalent than is reflected in official government statistics derived from police reports
NHTSA statistics indicate that 14% of all crashes involve driver distraction, with 7% of those (1% of all crashes) involving distraction related to cell phone use
Driver education and training should teach young drivers to avoid taking excessively long glances away from the forward roadway