Eye Glance Analysis of the Surrogate Tests for Driver Distraction
DOI: 10.17077/drivingassessment.1563
archive: archived pipeline: cataloged verified
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Summary
This study evaluates the efficacy of Detection Response Tasks (DRTs) as surrogate measures for assessing driver distraction, specifically examining how different DRT modalities and secondary tasks affect eye glance patterns and reaction times. Motivated by the need for standardized methods to quantify visual and cognitive loads during driving, the research was conducted as part of the ISO Driving Distraction working group. The primary objective was to determine whether specific DRTs could distinguish between visual-manual demands and auditory-verbal cognitive demands, and to correlate these objective metrics with subjective situational awareness ratings. The experimental design involved sixteen participants engaged in a simulated driving task using a semi-static simulator, where they performed lane-tracking while executing secondary tasks. Three types of DRTs were employed: Head-mounted DRT (visual), Remote DRT (visual), and Tactile DRT (tactile vibration). Participants performed two secondary tasks with varying difficulty levels: a visual-manual Surrogate Reference Task (SuRT) and an auditory-verbal N-Back task. Data collection included DRT reaction times and accuracy, eye glance metrics recorded via an eye-tracking system (such as Total Eyes-Off-The-Road Time and Mean Glance Duration), and subjective workload ratings. The study also compared laboratory results with open-road data from a separate cohort to validate the surrogate tests. The results demonstrated that visual DRTs increased visual load more than the tactile DRT, significantly increasing detection response times by 135.79 ms and marginally increasing total forward glance time. Secondary task analysis revealed that visual-manual tasks resulted in significantly longer total eyes-off-the-road times and slower DRT response times compared to auditory-verbal tasks. Crucially, the Tactile DRT (TDRT) proved sensitive to cognitive load (increasing from easy to hard N-Back tasks) but not visual load, whereas Total Eyes-Off-The-Road Time was sensitive to visual load but not cognitive load. This orthogonality confirmed that these metrics measure distinct dimensions of distraction. Additionally, the study identified a "looked-but-did-not-see" phenomenon, where participants missed visual stimuli despite looking in the correct direction. Subjective situational awareness ratings showed significant inverse correlations with DRT reaction times and positive correlations with DRT accuracy. The significance of this research lies in its validation of TDRT as a sensitive surrogate for measuring cognitive distraction, independent of visual demand. The findings support a dimensional model of driver distraction, suggesting that a combination of TDRT, eye glance analysis, and subjective ratings provides a comprehensive assessment of driver workload. The strong correlation between laboratory and on-road data further establishes the reliability of these surrogate tests for evaluating the safety of in-vehicle systems and multitasking behaviors.
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.
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | Crossref | — | — | 1 | 2026-06-07 |
| archive | success | canonical_url | — | — | 1 | 2026-06-09 |
| extract | success | pdftotext | — | — | 2 | 2026-06-09 |
| clean | success | clean | — | — | 1 | 2026-06-09 |
| chunk | success | chunk | — | — | 1 | 2026-06-09 |
| embed | success | embed | Qwen/Qwen3-Embedding-8B | — | 1 | 2026-06-09 |
| enrich | success | openalex | — | — | 3 | 2026-07-02 |
| promote | success | — | — | — | 1 | 2026-06-07 |
| summarize | success | llm | qwen3.6-27b-prismaquant | summ-v5 | 1 | 2026-06-09 |
| tag | success | vector_similarity | — | — | 8 | 2026-06-11 |
| verify | success | — | — | — | 1 | 2026-06-09 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-09; verification: verified.
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- Empirical Findings: behavioral performance data
- Methodological Resource: measurement protocol, tool software