Older Drivers’ Foot Movements [Traffic Tech]
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 the foot movements of older drivers to identify characteristics associated with pedal application errors, a crash type previously found to be more common among older and female drivers. Motivated by limited prior understanding of how medical conditions, physical attributes, and driver-vehicle fit influence these errors, the research aimed to determine if medical status, sex, or anthropometry affects foot positioning and movement, and whether these factors relate to proper vehicle fit. The study involved two components. First, a foot movement study included 26 cognitively normal drivers aged 60 and older, categorized into normally aging (NA), peripheral neuropathy (PN), and orthopedic (OP) groups. Participants underwent in-clinic assessments of physical functioning, cognition, and vision, followed by driving an instrumented 2011 Chevrolet Malibu over a 27-mile course comprising suburban, urban, freeway, and parking maneuvers. Data were collected via vehicle instrumentation and scoring by a certified driving rehabilitation specialist (CDRS). Second, a driver-vehicle fit study included 33 participants (including those from the first study) who were measured for anthropometric variables such as height, leg length, and foot size. Researchers compared self-selected seat positions against optimal positions defined by CarFit guidelines to assess fit. Results indicated that medical status did not significantly affect foot positioning or movement variability during on-road driving. However, drivers with medical conditions (MC) applied less brake pressure during required stops and performed worse in parking tasks, exhibiting errors in judging turning radius and shifting. In contrast, sex and anthropometry significantly influenced foot behavior. Females, who were generally shorter with smaller feet and shorter leg bones, demonstrated faster foot transfer times from accelerator to brake and positioned their feet closer to the lateral center of the brake pedal. Anthropometric variables like shorter femur and tibia lengths were associated with specific movement patterns, including faster transfer times and greater brake coverage. Regarding vehicle fit, logistic regression revealed that functional leg reach was the only significant predictor of acceptable fit; drivers with longer functional leg reach were more likely to achieve proper seat positioning. The findings suggest that older adults with medical conditions perform comparably to healthy peers in on-road driving but struggle with complex parking maneuvers, likely due to cognitive or sensory limitations. The study highlights that observed sex differences in foot movement are likely driven by anthropometric variations rather than sex itself. Crucially, the results imply that many older drivers, particularly those with shorter functional leg reach, may require guidance to adjust their seats properly to ensure safe pedal access. This underscores the importance of considering physical dimensions and vehicle fit in strategies to reduce pedal application errors among older drivers.
Key finding
Drivers whose self-selected seat position provided a good fit had an average functional leg reach about three inches longer than drivers who had not adjusted their seats properly.
Methodology
on_road
Sample size: 26
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 (8 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 | — | — | — | 4 | 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.
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: behavioral performance data