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Related Experiment Video

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Tactile Vibrating Toolkit and Driving Simulation Platform for Driving-Related Research

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Published on: December 18, 2020

Factors leading to older drivers' intersection crashes.

Keli A Braitman¹, Bevan B Kirley, Susan Ferguson

¹Insurance Institute for Highway Safety, Arlington, VA 22201, USA. kbraitman@iihs.org

Traffic Injury Prevention

|August 22, 2007

Summary

Older drivers, especially those 80 and older, are more prone to intersection crashes due to specific age-related errors like failing to yield or detect vehicles. Identifying these factors is key to improving older driver safety.

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Area of Science:

Gerontology
Traffic Safety
Human Factors in Driving

Background:

Older drivers are disproportionately involved in intersection crashes.
The specific reasons behind this overinvolvement are not fully understood.
Understanding age-related differences in crash causation is crucial for developing targeted safety interventions.

Purpose of the Study:

To identify the specific factors contributing to intersection crashes among older drivers.
To compare crash causation among different age groups, including older adults.
To inform strategies for reducing intersection crashes involving elderly drivers.

Main Methods:

The study compared three groups: drivers aged 70-79, drivers aged 80+, and a younger control group (35-54).
Data sources included police reports, driver interviews, and intersection photographs.
Crash analysis focused on driver actions and errors leading to nonfatal intersection collisions.

Main Results:

Intersection crashes involving failure-to-yield increased with age, particularly at stop-sign controlled intersections during left turns.
Drivers aged 70-79 made more evaluation errors (misjudging gaps), while those 80+ predominantly failed to detect vehicles.
Younger drivers (35-54) showed more search errors, often linked to distraction.

Conclusions:

Intersection crash factors differ significantly across age groups, including within older driver demographics.
Infrastructure improvements like roundabouts and protected left-turn lanes may mitigate failure-to-yield crashes.
Crash avoidance systems show promise but require further real-world validation for all age groups.