Glance strategies for using an in-vehicle touch-screen monitor.

Fuller, Helen; Simhoni, Omer · 2009 · ROSA P / University of Michigan. Transportation Research Institute

archive: archived pipeline: cataloged verified

Get this paper ↗ (full text — opens at the source; we link to it, we don't host it)

Summary

This study investigates how the physical and visual placement of in-vehicle touch-screen monitors affects driver glance behavior and task performance. Motivated by the increasing prevalence of secondary tasks in vehicles and the resulting distraction risks, the research specifically aimed to distinguish between visual difficulty (angle from the road) and physical difficulty (reach distance from the driver). The authors sought to determine how drivers allocate visual resources when interacting with displays located in non-ideal positions, particularly examining how these strategies vary by driver stature and vehicle dynamics. The experiment utilized a driving simulator with 14 licensed drivers representing four stature groups (short females, midsize females, midsize males, and tall males). Participants performed a secondary task involving icon matching on a touch-screen monitor while following a lead vehicle that changed speed sinusoidally. The monitor was placed in four positions: near-high, near-low, far-high, and far-low, varying both reach distance and visual angle. Additionally, vehicle weight was manipulated to simulate normal and heavy vehicle dynamics. Glance metrics, including total task time, total glance time, median glance duration, time between glances, and number of glances, were recorded via video analysis. Results indicated that monitor position significantly impacted secondary task performance but not driving performance. Total task time and total glance time increased substantially for far monitor positions compared to near ones, with shorter subjects taking significantly longer than taller subjects. Crucially, while the total time spent looking at the monitor increased for difficult positions, the duration of individual glances remained constant. Instead, drivers compensated for difficult monitor locations by increasing the number of glances and the time spent looking at the road between glances. Shorter subjects made more glances and had longer intervals between them, likely due to the need for more complex motor planning involving torso leaning. Visual distance (high vs. low) had a lesser impact than physical reach distance. The findings suggest that drivers cope with difficult in-vehicle task locations by breaking tasks into smaller subtasks, maintaining short glance durations to preserve situational awareness, rather than extending individual glances. This strategy allows drivers to manage the increased physical and visual demands of far or low monitor positions. The study highlights that physical reach distance is a more critical design factor than visual angle for minimizing distraction. These insights support modeling efforts to understand the combined visual and motor demands of secondary tasks, emphasizing the need for ergonomic designs that accommodate drivers of varying statures to reduce cognitive and physical load.

Key finding

Drivers increased the number of glances to the monitor when it was placed farther away, while the duration of individual glances remained unchanged.

Methodology

simulator

Sample size: 14

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).

Summary generated by qwen3.6-27b-prismaquant on 2026-06-10; verification: verified.

Topics

Ranked by relevance to this paper. Hover a topic for its definition.

• temporal
• visual
• visual manual
• attention allocation
• in vehicle displays
• eye movements scanning

Information type

What kind of knowledge this paper contributes, grouped by family — independent of topic (what it is about) and method (how it was studied).

• Applied Guidance: design guidelines
• Empirical Findings: behavioral performance data
• Methodological Resource: measurement protocol