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Mental workload when driving in a simulator: effects of age and driving complexity
Vincent Cantin1, Martin Lavallière, Martin Simoneau
1Université du Québec à Trois-Rivières, Département des sciences de l'activité physique, Trois-Rivières, Canada.
Accident; Analysis and Prevention
|June 23, 2009
Summary
Older drivers experience higher mental workload, especially during complex driving tasks like overtaking. This increased cognitive load, measured by reaction time (RT), suggests greater challenges for older adults on the road.
Area of Science:
- Gerontology
- Human Factors
- Cognitive Psychology
Background:
- Older drivers may face increased mental workload in complex driving scenarios, potentially leading to errors.
- Understanding age-related differences in cognitive load during driving is crucial for road safety.
Purpose of the Study:
- To investigate if mental workload differs between young and older drivers based on driving context complexity.
- To quantify age-related variations in mental workload using the probe reaction time (RT) technique.
Main Methods:
- Utilized a driving simulator to assess mental workload via the probe reaction time (RT) technique.
- Participants (young and older drivers) completed a 26.4-km driving scenario with stimuli presented during straight roads, intersections, and overtaking maneuvers.
- Measured reaction time (RT) to auditory stimuli as an indicator of mental workload.
Main Results:
- Both age groups exhibited increased RTs with driving complexity, with RTs rising from straight roads to intersections and overtaking.
- Older drivers consistently showed longer RTs than younger drivers across all driving contexts.
- The most significant difference in RTs between age groups was observed during overtaking maneuvers, indicating a disproportionately higher workload for older drivers.
Conclusions:
- Driving imposes a greater mental workload on older drivers compared to younger drivers.
- This age-related increase in mental workload is exacerbated by complex driving situations, particularly overtaking maneuvers.
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