Investigating the roles of touchscreen and physical control interface characteristics on driver distraction and multitasking performance.
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Summary
This study investigates how touchscreen and physical control interface characteristics affect driver distraction, multitasking performance, and roadway awareness. Motivated by the increasing adoption of touchscreens in vehicles, which replace natural haptic and auditory feedback with synthetic cues, the research aims to determine if these impoverished feedback mechanisms compromise driving safety. The authors hypothesized that the lack of rich sensory feedback in touchscreens would degrade performance and reduce a driver’s ability to detect safety-critical objects compared to physical interfaces. The researchers conducted a real-world driving experiment with 29 participants on a closed-course track. Participants drove a vehicle at 20 mph while performing a multitasking protocol consisting of an input task (entering sequences on a keypad) and an acknowledgment task (detecting and responding to obscured roadside signage). The study compared six interface conditions: a physical keypad (P), a standard touchscreen keypad (TK), and a large touchscreen keypad (L), each with varying combinations of synthetic feedback (visual, auditory, and vibro-tactile). Performance was measured via input accuracy, efficiency, and time; detection rate and response promptness for roadside signs; speed maintenance; and perceived workload using the NASA-Task Load Index. The results indicated that the absence of auditory and vibro-tactile feedback in touchscreen interactions significantly degraded input task performance compared to the natural haptic feedback of the physical interface. Crucially, this insufficiency in synthetic feedback significantly deteriorated drivers’ ability to detect and promptly respond to sudden roadside objects, a key metric for Level 1 situation awareness. Drivers using touchscreens without comprehensive synthetic feedback exhibited slower response times and lower detection rates for safety-critical cues. However, perceived workload did not differ significantly across interface types, suggesting that drivers did not subjectively recognize the increased cognitive demand or safety risk associated with poorer feedback conditions. The findings highlight that synthetic feedback plays a critical role in regulating visual attention resources during multitasking. While touchscreens offer design flexibility, their reliance on artificial cues can impair a driver’s situational awareness and reaction to hazards if not properly supplemented with auditory and vibro-tactile feedback. The study concludes that interface designers and policymakers must consider the impact of feedback richness on driving safety, as the transition from physical to touchscreen controls introduces measurable risks to roadway awareness that are not always apparent to the driver.
Key finding
Touchscreen interaction without auditory and vibro-tactile feedback significantly degraded input task performance and reduced drivers' ability to detect and respond to roadside objects compared to physical interfaces.
Methodology
on_road
Sample size: 29
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_rosap on 2026-05-23 (6 acquisition events logged).
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | rosap | — | — | 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 | 3 | 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
- Theoretical Contribution: conceptual framework