Assessing the Effectiveness of Advanced Traveler Information on Older Driver Travel Behavior and Mode Choice
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Summary
This study addresses the growing challenge of meeting the safety and mobility needs of older drivers, a demographic that comprised over 50% of the U.S. population at the time of publication. As Intelligent Transportation Systems (ITS) and Advanced Traveler Information Systems (ATIS) are deployed to manage traffic, their effectiveness for older adults remains unclear due to age-related declines in perception, decision-making speed, and general unfamiliarity with technology. The research aimed to identify specific needs and barriers for older drivers (defined as those over 55) to facilitate better ATIS design and utilization. The researchers employed a mixed-methods approach in the San Antonio, Texas area, capitalizing on recent ATIS implementations. Data collection included paper surveys distributed to older drivers in the Lower Rio Grande Valley (498 respondents), online surveys administered to younger employees at USAA (137 respondents) for comparative purposes, and two focus groups involving 34 participants. The focus groups provided hands-on experience with three ATIS technologies: desktop web applications, in-vehicle navigation units, and information kiosks. This design allowed for the isolation of age-specific needs by comparing older and younger cohorts. The results revealed significant disparities in technology familiarity and access. Older drivers had substantially lower familiarity with and access to internet-based technologies compared to younger drivers, relying primarily on radio and television for travel information. While both groups valued ATIS for reducing stress and allowing schedule adjustments, older drivers placed higher importance on weather information and lower importance on traffic congestion data. In response to anticipated delays, older drivers were more likely to change their departure time (48%) or cancel trips (7%) compared to younger drivers, who predominantly chose to change routes (86%). Barriers to ATIS adoption for older drivers included cost (27%), lack of awareness (32%), and difficulty understanding technology (22%). Focus group findings indicated that while older drivers found web and kiosk interfaces relatively easy to use, they frequently requested larger print sizes and valued the ability to print route information. The study concludes that older drivers have distinct needs that must be addressed in ATIS development to ensure equitable mobility as the population ages. Key recommendations include improving public awareness campaigns, as lack of awareness was a significant barrier for both age groups, and designing interfaces with larger fonts and clearer instructions. The authors argue that ignoring these specific needs could detrimentally impact the success of ITS deployments and the mobility of the growing elderly population.
Key finding
Older drivers demonstrated significantly lower familiarity with and access to ATIS technologies compared to younger drivers, yet they valued the information and would utilize it if awareness and legibility were improved.
Methodology
mixed_methods
Sample size: 669
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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- Empirical Findings: observational prevalence