Age-Related Differences in the Cognitive, Visual and Temporal Demands of In-Vehicle Information Systems
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Summary
This study addresses the gap in understanding how older drivers interact with In-Vehicle Information Systems (IVIS) compared to younger drivers. While previous research had comprehensively assessed the cognitive, visual, and temporal demands of IVIS tasks, it primarily focused on younger populations. This research, conducted by the University of Utah for the AAA Foundation for Traffic Safety, aimed to determine how task type, interaction mode, and vehicle make/model affect the demands placed on drivers aged 21–36 versus those aged 55–75. The methodology involved 128 licensed drivers with normal or corrected-to-normal vision and clean driving histories, divided into younger (mean age 24.8 years) and older (mean age 65.8 years) groups. Participants were tested in six different 2018-model vehicles from various manufacturers, each offering auditory/vocal commands and either center stack displays or center console controls. Drivers performed four specific tasks: programming music, calling/dialing, text messaging, and programming navigation. Testing occurred on a 2-mile residential road with low traffic, with a safety investigator present. Objective measures included task completion time and visual/cognitive demand assessed via the Detection Response Task (DRT), while subjective workload was measured using the NASA Task Load Index. Benchmark trials included a baseline driving condition and high-demand cognitive and visual tasks. Key findings revealed that older drivers consistently took longer to complete IVIS tasks and experienced higher cognitive and visual demands than younger drivers. These differences were most pronounced during navigation tasks, which took over 24 seconds for both age groups, compared to faster music and calling tasks. Regarding interaction modes, auditory/vocal commands took the longest to complete, followed by center console controls, with center stack interactions being the fastest. However, both age groups subjectively reported that voice commands felt less demanding than manual controls. Vehicle design significantly influenced performance; task completion times and visual demands varied considerably across manufacturers, with some vehicles allowing both groups to complete tasks under 24 seconds and others exceeding this threshold. Subjective workload ratings also depended on the specific vehicle model. The study concludes that IVIS designs should be optimized to minimize demands on older drivers, such as by placing controls closer to the forward vision or improving voice control effectiveness. The authors recommend that drivers of all ages restrict IVIS use to legitimate emergencies or urgent driving-related purposes. These findings provide a framework for technology companies and automakers to identify significant sources of driver distraction and improve interface designs to enhance safety for aging populations.
Key finding
Older drivers experienced higher cognitive and visual demand and longer IVIS task completion times than younger drivers across tasks, interaction modes, and vehicles, with navigation and text messaging especially prolonged and age gaps largest during IVIS use.
Methodology
on_road
Sample size: 128
Provenance
The full processing record for this entry. Every stage of this paper's journey through the pipeline is logged — what ran, with which tool and model, how many attempts it took, and when it last completed. Discovered via bulk_ingest_aaa_foundation on 2026-05-23 (5 acquisition events logged).
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | aaa_foundation | — | — | 2 | 2026-05-23 |
| archive | success | — | — | — | 1 | 2026-05-23 |
| extract | success | cached | — | — | 2 | 2026-06-10 |
| clean | success | — | — | — | 1 | 2026-06-01 |
| chunk | success | — | — | — | 1 | 2026-06-01 |
| embed | success | — | — | — | 1 | 2026-06-02 |
| enrich | success | — | — | — | 1 | 2026-05-23 |
| promote | success | — | — | — | 1 | 2026-05-23 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 2 | 2026-06-10 |
| tag | success | vector_similarity | — | — | 19 | 2026-06-11 |
| verify | success | — | — | — | 2 | 2026-06-10 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.
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- Applied Guidance: design guidelines
- Empirical Findings: behavioral performance data
- Methodological Resource: measurement protocol