title: The relationship between age and driving attitudes and behaviors among older Americans.
abstract: BACKGROUND
  Due to a decreasing birth rate and longer life expectancy, the proportion of Americans over the age of 65 is expected to rise in coming years. Drivers over 65 drive two billion miles yearly, a number that will increase. For that reason, it is imperative to understand their attitudes and perceptions. It is also important to understand whether drivers over 65 can be treated as one cohesive group, or if there are differences among them.
  
  
  METHODS
  A web-enabled survey was conducted among Americans in the years 2011-2013. Responses from 1793 persons over 65 regarding attitudes towards driving behaviors, support for safety interventions, and engagement in unsafe behaviors were analyzed. Respondents were stratified by age: 65-69, 70-74, and 75 and older. Age groups were compared using logistic regression. Other potential explanatory factors were analyzed and controlled for.
  
  
  RESULTS
  The three groups were similar on many outcomes. However, statistically significant differences were found between them with regard to perceptions on speeding and the support for speed cameras, among other outcomes. In nearly all cases, those 75 and older were the most "pro-safety." However, when adjusted for demographic characteristics other than age, a larger proportion of respondents 75 and older reported engaging in red light running and drowsy driving in the last 30 days, and the difference was statistically significant.
  
  
  CONCLUSIONS
  Older drivers are strongly "pro-traffic safety." However, the finding that those 65-69 are less so is concerning. This is especially true if it is the result of a cohort effect instead of an age effect. The increase in certain behaviors among those 75 and older is also concerning; drivers over this age are more prone to fatal injury when involved in a motor vehicle crashes. This poses a public health issue as the 75and older population expands.
authors.affiliation: AAA Foundation for Traffic Safety, 607 14th Street, NW, Suite 201, 20005, Washington, DC, USA. ajm2231@cumc.columbia.edu.
authors.forename: Alexander J
authors.initials: AJ
authors.lastname: Mizenko
authors.affiliation: AAA Foundation for Traffic Safety, 607 14th Street, NW, Suite 201, 20005, Washington, DC, USA.
authors.forename: Brian C
authors.initials: BC
authors.lastname: Tefft
authors.affiliation: AAA Foundation for Traffic Safety, 607 14th Street, NW, Suite 201, 20005, Washington, DC, USA.
authors.forename: Lindsay S
authors.initials: LS
authors.lastname: Arnold
authors.affiliation: AAA Foundation for Traffic Safety, 607 14th Street, NW, Suite 201, 20005, Washington, DC, USA.
authors.forename: Jurek G
authors.initials: JG
authors.lastname: Grabowski
keywords: Aging; Driving; Safety; Seniors; Traffic