Advanced Traveler Information Systems and Commercial Vehicle Operations Components of the Intelligent Transportation Systems: Design Alternatives for In-vehicle Information Displays

Campbell, JL; Colton, C; Finch, M; Gore, BF; Jamieson, G; Kinghorn, R; Lee, JD; Macauley, J; Stone, S · 1997 · ROSA P / United States. Federal Highway Administration

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 1997 report by the Federal Highway Administration addresses the lack of human factors guidelines for designing In-Vehicle Safety Advisory and Warning Systems (IVSAWS) and In-Vehicle Signing Information Systems (ISIS) within Advanced Traveler Information Systems (ATIS). The research was motivated by two critical design concerns: ensuring drivers comply with warning messages and preventing ATIS devices from undermining driving safety through distraction or overreliance. The study specifically examined how display modality (visual vs. auditory), message style (notification vs. command), and display location affected driver compliance and safety, while also considering driver demographics (age, gender) and environmental factors (roadway information availability). The researchers conducted an empirical study using a low-fidelity automotive simulator equipped with reconfigurable ATIS displays. Participants drove simulated scenarios where ATIS warnings were presented via liquid crystal displays or speakers. The experimental design manipulated independent variables including message style, sensory modality, and the presence of redundant roadway signs. Dependent variables included direct measures of warning compliance and driving safety, as well as intervening cognitive measures such as trust in the system, self-confidence, situational awareness, and mental workload. The results indicated that ATIS warnings generally generated higher compliance than traditional road signs. However, this increased compliance came with significant safety trade-offs. ATIS devices fostered an overreliance on in-vehicle information, causing drivers to ignore critical roadway cues, which degraded driving safety. Command-style messages (e.g., "Merge left") promoted greater compliance than notification messages (e.g., "Accident ahead") but reduced safety and trust. Conversely, notification messages were less effective at driving compliance but preserved situational awareness. Driver age moderated these effects; older drivers exhibited worse overall performance but were less negatively impacted by ATIS presence and trusted the system more than younger drivers. Gender also interacted with age and message style, with younger women assimilating notification messages more effectively than command messages, while older women preferred command messages. The study concludes that ATIS design requires careful balancing between compliance and safety. Providing ATIS information alongside redundant road signs achieved high compliance without compromising safety, whereas ATIS-only environments led to dangerous overreliance. The authors recommend reserving command messages for situations requiring immediate action where redundant roadway information is unavailable. These findings provide specific design implications for ITS developers, emphasizing that message style and information redundancy are critical factors in mitigating the risks of driver distraction and overreliance on automated systems.

Key finding

ATIS warnings generate greater compliance than road signs but can undermine driving safety by fostering driver overreliance on in-vehicle information, a risk exacerbated by command-style messages.

Methodology

simulator

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.

• feedback modes
• hud ar windshield
• situational awareness
• ehmi external hmi
• odd communication
• vru facing ehmi

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: observational prevalence
• Theoretical Contribution: theory or model