Browsing by Author "Ouimet, Marie-Claude"

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    An Overview of Methods and Key Findings from the NTDS: The Naturalistic Teenage Driving Study: Methods and Selected Findings
    Simons-Morton, Bruce G.; Klauer, Charlie; Guo, Feng; Lee, Suzanne E.; Ouimet, Marie-Claude; Albert, Paul S.; Dingus, Thomas A. (2014-08-25)
    This paper summarizes the findings on novice teenage driving outcomes (e.g., crashes and risky driving behaviors) from the Naturalistic Teenage Driving Study. Method Survey and driving data from a data acquisition system (global positioning system, accelerometers, cameras) were collected from 42 newly licensed teenage drivers and their parents during the first 18 months of teenage licensure; stress responsivity was also measured in teenagers. Result Overall teenage crash and near-crash (CNC) rates declined over time, but were > 4 times higher among teenagers than adults. Contributing factors to teenage CNC rates included secondary task engagement (e.g., distraction), kinematic risky driving, low stress responsivity, and risky social norms. Conclusions The data support the contention that the high novice teenage CNC risk is due both to inexperience and risky driving behavior, particularly kinematic risky driving and secondary task engagement. Practical Applications Graduated driver licensing policy and other prevention efforts should focus on kinematic risky driving, secondary task engagement, and risky social norms.
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    The Prevalence and Risk of Secondary Task Engagement with Novice Drivers: Distracted Driving and Risk of Road Crashes among Novice and Experienced Drivers
    Klauer, Charlie; Guo, Feng; Simons-Morton, Bruce G.; Ouimet, Marie-Claude; Lee, Suzanne E.; Dingus, Thomas A. (2014-08-25)
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    Variability in Crash/Near-Crash Risk Among Novice Drivers
    Guo, Feng; Simons-Morton, Bruce G.; Klauer, Charlie; Ouimet, Marie-Claude; Dingus, Thomas A.; Lee, Suzanne E. (2014-08-25)
    Using video monitoring technologies, we investigated teenage driving risk variation during the first 18 months of independent driving. Driving data were collected on 42 teenagers whose vehicles were instrumented with sophisticated video and data recording devices. Surveys on demographic and personality characteristics were administered at baseline. Drivers were classified into 3 risk groups using a K-mean clustering method based on crash and nearcrash (CNC) rate. The change in CNC rates over time was evaluated by mixed-effect Poisson models. Compared with the first 3 months after licensure (first quarter), the CNC rate for participants during the third, fourth, and fifth quarters decreased significantly to 59%, 62%, and 48%, respectively. Three distinct risk groups were identified with CNC rates of 21.8 (high-risk), 8.3 (moderate-risk), and 2.1 (low-risk) per 10 000 km traveled. High- and low-risk drivers showed no significant change in CNC rates throughout the 18-month study period. CNC rates for moderate-risk drivers decreased substantially from 8.8 per 10 000 km in the first quarter to 0.8 and 3.2 in the fourth and fifth quarters, respectively. The 3 groups were not distinguishable with respect to personality characteristics. Teenage CNC rates varied substantially, with distinct high-, moderate-, and low-risk groups. Risk declined over time only in the moderate-risk group. The high-risk drivers appeared to be insensitive to experience, with CNC rates consistently high throughout the 18-month study period, and the moderate-risk group appeared to learn from experience. (J Pediatr 2013;163:1670-6).