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Driving exposure by driver age in Michigan
J P Ehsani1, C R Bingham, J T Shope
1University of Michigan Transportation Research Institute, USA. jpehsani@umch.edu
Journal of Safety Research
|August 23, 2011
Summary
Younger drivers have fewer miles and minutes but similar trips compared to older drivers. Employment significantly impacts driving exposure across all age groups, raising workplace safety concerns for employed teens.
Area of Science:
- Traffic safety research
- Human factors in transportation
- Sociology of driving behavior
Background:
- Compares driving exposure in high-crash-risk groups (16-17 and 18-24-year-olds) versus a low-crash-risk group (35-64-year-olds).
- Examines associations between driving exposure and demographic/behavioral variables.
Purpose of the Study:
- To compare driving exposure across different age groups.
- To identify factors associated with driving exposure in various age demographics.
Main Methods:
- Utilized state-wide survey data from 2004-2005.
- Calculated total miles, minutes, and trips driven within a 48-hour period for respondents.
Main Results:
- Youngest drivers (16-17) drove fewer miles/minutes but similar trips compared to older groups.
- Employment and high vehicle access correlated with increased driving exposure for younger drivers.
- Employment, high income, large household size, and low vehicle access correlated with increased driving exposure for older drivers.
- Driving alone and during the day was more common across all ages.
- Miles and minutes driven showed positive associations with demographic/behavioral variables, unlike trips driven.
Conclusions:
- Driving exposure is influenced by life stage, with high school students' driving patterns distinct from older groups.
- 18-24-year-olds exhibited driving patterns closer to older drivers but with retained differences.
- Greater driving exposure in older drivers may reflect significant household responsibilities.
- Findings highlight potential workplace safety issues for employed teens due to higher driving exposure and crash risk.
- Further research is recommended to develop evidence-based safety recommendations for employed teens, particularly those in driving-related jobs.
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