Older Driver Support System Field Operational Test
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 addresses the elevated crash risk associated with older drivers, who exhibit the highest fatality rate per 100 million miles driven due to factors such as cognitive decline, visual limitations, and physical fragility. While previous research demonstrated that real-time feedback apps could reduce risky behaviors in teen drivers, little evidence existed regarding their efficacy for older adults. The researchers aimed to evaluate the impact of "RoadCoach," a universally designed smartphone application providing real-time feedback on risky driving behaviors, on the actual driving performance and user acceptance of older drivers in a naturalistic setting. The study employed a field operational test using an ABA reversal design involving 28 drivers aged 65 and older (mean age 69.5) from Minnesota and Kansas. Participants drove their own vehicles equipped with the RoadCoach app, which monitored metrics including speeding, hard braking, aggressive turning, and stop sign violations. The experimental design consisted of three phases: a three-week baseline period with no feedback, a six-week intervention period with active RoadCoach feedback, and a three-week follow-up period with no feedback. Data were collected via Bluetooth synchronization to the participants' Android smartphones. The study also assessed user experience through standardized measures of mental effort, usability, and trust, alongside post-study interviews. The results indicated that RoadCoach feedback significantly reduced hard braking and stop sign violations during the intervention phase. Crucially, these improvements persisted during the post-feedback follow-up period, suggesting a sustained training effect for these specific behaviors. In contrast, speeding behaviors showed only marginal reductions during the feedback phase and significantly worsened after the feedback was discontinued, indicating no lasting training effect for speed management. Subjective measures revealed high user satisfaction and trust, with drivers reporting that the app improved their attention and focus. However, usability scores were slightly lower than in prior controlled tests, attributed to auditory alerts occasionally intruding on driver attention. The findings suggest that in-vehicle coaching systems like RoadCoach can effectively mitigate specific risky driving behaviors in older adults, particularly those related to braking and intersection compliance, with benefits that endure after the technology is removed. The lack of sustained improvement in speeding highlights the need for further research into optimal feedback strategies for speed management. The study concludes that such technologies hold promise for helping older drivers maintain safe driving habits and independence, though design refinements are needed to minimize distraction. This work provides empirical evidence supporting the integration of real-time feedback systems into older driver safety interventions.
Key finding
Hard braking and stop sign violations were significantly reduced during feedback and remained reduced in the post-feedback phase, whereas speeding behaviors worsened after feedback cessation.
Methodology
field_study
Sample size: 28
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.
Topics
Ranked by relevance to this paper. Hover a topic for its definition.
- older drivers
- older driver retraining
- novice drivers
- age related perceptual decline
- useful field of view
- in vehicle coaching
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).
- Empirical Findings: observational prevalence, behavioral performance data
- Methodological Resource: tool software