This annotated bibliography explores the epidemiology of elderly driving safety through five peer-reviewed studies. The sources address cognitive training interventions that reduce motor vehicle collision rates among older drivers, mortality and injury patterns following crashes, the influence of state license renewal policies on driving mobility, predictors of lane-change errors, and clinical screening tools designed to identify at-risk older drivers. Together, these studies provide a multidisciplinary perspective on the physical, cognitive, and policy-related factors that affect driving safety in adults aged 65 and older.
The following annotated bibliography examines five peer-reviewed studies on the epidemiology of elderly driving safety. The sources collectively address cognitive interventions, crash mortality, state licensing policy, lane-change performance, and clinical screening tools for older drivers. Together, they reflect the multidisciplinary nature of research into older adult driver safety and the range of factors — cognitive, physical, and regulatory — that influence driving outcomes in this population.
Ball, K., Edwards, J. D., Ross, L. A., and McGwin, G. (2010). Cognitive Training Decreases Motor Vehicle Collision Involvement of Older Drivers. The American Geriatrics Society, Journal Compilation, 58, 2107–2113.
The work of Ball, Edwards, Ross, and McGwin (2010) reports a randomized, controlled, multisite, single-blind clinical trial conducted in communities of seniors across four U.S. cities: Birmingham, Alabama; Baltimore, Maryland; Indianapolis, Indiana; and State College, Pennsylvania. The mean age of drivers in the study was 73.1 years, with 18.6% of participants identified as African American. The intervention consisted of cognitive training targeting memory, reasoning, and speed of processing. Outcomes were measured using state-recorded motor vehicle collision (MVC) involvement up to six years following study enrollment.
The results indicate that the interventions produced a 50% decrease (per person-mile) in at-fault MVCs compared to the control group (p. 2107). The study concludes that cognitive speed-of-processing and reasoning training were effective in reducing at-fault motor vehicle collision rates among older drivers. This study demonstrates the value of cognitive training in older drivers as a means of lowering motor vehicle collision rates within this age group.
Bauza, G. (2008). High Mortality in Elderly Drivers is Associated with Distinct Injury Patterns: Analysis of 187,869 Injured Drivers. Journal of Trauma, 2008.
The work of Bauza (2008) reports that while seatbelt use in the United States had risen significantly to approximately 85%, more than six million motor vehicle collisions (MVCs) were recorded in 2004, resulting in approximately 40,000 deaths — equivalent to one death every 12 minutes (p. 304). Bauza further reports that fatality rates, while declining after age 25, rise sharply to 18.0 per 100,000 among those aged 65 or older, accounting for 14% of all traffic fatalities, despite the fact that elderly drivers typically spend the least amount of time on the road (2008, p. 304).
Bauza (2008) reports a study in which the Institutional Review Board at Boston University Medical Center obtained records of injured drivers from October 2001 through February 2005. Of the 187,869 records meeting the inclusion criteria, 15,755 involved drivers aged 70 years or older. The study found that, despite similar rates of seatbelt use, elderly drivers experienced the worst outcomes: they were more likely to be admitted to the intensive care unit (ICU), had the longest ICU and hospital stays, and were less likely to be discharged directly home following hospitalization. Mortality rates for individuals aged 70 and above were reported at 17.1%, compared to only 2.6% among younger adults.
Specific injury types were cited as contributing to the higher mortality rates, including concussion, intracranial hemorrhage, fracture of the vertebral column, spinal cord injury, injuries to the thoracic cavity, fracture of the clavicle, scapula or humerus, neck or femur fracture, and ankle fracture. The value of this study lies in the detailed information it provides regarding the outcomes elderly individuals face following motor vehicle collisions.
Kulikov, E. (2011). The Social and Policy Predictors of Driving Mobility Among Older Adults. Journal of Aging & Social Policy, 23, 1–18. Taylor and Francis Group, LLC / Routledge.
"State license requirements affect older driver mobility"
"Auditory attention predicts lane-change failure in older drivers"
"Clinical 4Cs tool screens older drivers for safety"
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