Accident; analysis and prevention
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The empirical basis for legislation to limit cell phones while driving is addressed. A comprehensive meta-analysis of the effects of cell phones on driving performance was performed. A total of 33 studies collected through 2007 that met inclusion criteria yielded 94 effect size estimates, with a total sample size of approximately 2000 participants. ⋯ In addition, drivers using either phone type do not appreciably compensate by giving greater headway or reducing speed. Tests for moderator effects on RT and speed found no statistically significant effect size differences across laboratory, driving simulation and on-road research settings. The implications of the results for legislation and future research are considered.
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National seatbelt observation surveys indicate commercial vehicle drivers' seatbelt usage is lower than passenger vehicle drivers. Seatbelts are effective at preventing injuries and death following motor vehicle crashes and an important component in decreasing morbidity and mortality related to commercial vehicle crashes. ⋯ Our observations demonstrate a need to increase seatbelt usage among heavy commercial vehicle drivers. Specific programs and resources for intervention programs targeting heavy commercial vehicle drivers are warranted.
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Age is often used as a predictor of injury and mortality in motor vehicle crashes (MVCs), however, the age that defines an "older" occupant in terms of injury-risk remains unclear, as do specific injury patterns associated with increasing age. The objective of this study was to evaluate the relationship between age and serious injury (including injury patterns) for occupants involved in MVCs. ⋯ Age is a strong predictor of serious injury from motor vehicle trauma, the risk of which increases in non-linear fashion as age increases. There is no specific age that clearly defines an "older" occupant by injury risk.