Visual and cognitive demands of using in-vehicle infotainment systems
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Summary
This study addresses the critical safety concern regarding how complex multimodal In-Vehicle Information Systems (IVIS) impact driver workload and performance. With the rapid expansion of infotainment features in 2017 model-year vehicles, there was a significant knowledge gap concerning the specific visual and cognitive demands of these systems. The research aimed to determine which task types are most distracting, how different interaction modes (e.g., center stack, auditory vocal, center console) affect workload, and whether significant differences exist between Original Equipment Manufacturers (OEMs). The researchers conducted an on-road study involving 30 vehicles from various manufacturers and 24 participants per vehicle. Participants drove on residential roads with a 25 mph speed limit while performing up to four task types: audio entertainment, calling and dialing, text messaging, and navigation. These tasks were executed using up to three interaction modes. To quantify demand, the study utilized a Detection Response Task (DRT) to measure cognitive and visual/manual loads, alongside subjective workload ratings via the NASA Task Load Index. The study employed two referent tasks for calibration: an N-back task for high cognitive demand and a Surrogate Reference Task (SuRT) for high visual/manual demand. Metrics were standardized against these referents to create an overall demand score, allowing for direct comparison across tasks, modes, and vehicles. The findings revealed substantial variations in distraction potential. Audio entertainment and calling/dialing tasks were equivalent in demand, while text messaging imposed significantly higher demand. Navigation destination entry was the most demanding task, with an overall demand more than twice that of the high-demand referent. Regarding interaction modes, all IVIS interactions exceeded the high-workload referent. Center stack interactions were significantly less demanding than auditory vocal interactions, which were less demanding than center console interactions. Although voice commands reduced visual demand, they resulted in significantly longer interaction times, averaging 30 seconds. Furthermore, there were large disparities between vehicles: seven vehicles had moderate demand, eleven had high demand, and twelve had very high demand, with the latter group exhibiting higher cognitive, visual, and subjective loads. The study concludes that many IVIS features are too distracting to be enabled while the vehicle is in motion. The authors argue that the mere availability of a feature does not imply safety, noting that 83% of vehicles with very high overall demand allowed navigation entry while moving. The results suggest that automakers and policymakers must prioritize restricting interactions that impose high cognitive and visual loads, rather than simply expanding the range of available features. The research provides empirical evidence that workload systematically varies by task, mode, and vehicle design, highlighting the need for stricter guidelines on which interactions should be permitted during driving.
Key finding
Navigation destination entry and text messaging tasks imposed significantly higher visual and cognitive demands on drivers than audio entertainment or calling tasks, with many vehicle systems exhibiting workload levels that exceeded established high-demand reference benchmarks.
Methodology
on_road
Sample size: 720
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 author_sweep_intake on 2026-05-28 (3 acquisition events logged).
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | author_sweep | — | — | 8 | 2026-05-28 |
| archive | success | canonical_url | — | — | 7 | 2026-06-06 |
| extract | success | cached | — | — | 3 | 2026-06-10 |
| clean | success | clean | — | — | 1 | 2026-06-07 |
| chunk | success | chunk | — | — | 1 | 2026-06-07 |
| embed | success | embed | Qwen/Qwen3-Embedding-8B | — | 1 | 2026-06-07 |
| enrich | skipped | — | — | — | 5 | 2026-07-02 |
| promote | success | — | — | — | 2 | 2026-05-06 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 2 | 2026-06-10 |
| tag | success | vector_similarity | — | — | 15 | 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
- Methodological Resource: measurement protocol
- Theoretical Contribution: conceptual framework