Older-Driver Foot Movements
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, conducted by researchers from TransAnalytics, Clemson University, and the University of North Carolina under sponsorship from the National Highway Traffic Safety Administration (NHTSA), investigates the foot movements and pedal control behaviors of drivers aged 60 and older. The research was motivated by the need to understand factors contributing to pedal misapplication crashes, building upon previous findings regarding the prevalence of such errors. The primary objectives were to measure how older drivers control the accelerator and brake during driving and parking, assess the impact of medical conditions and anthropometry on these behaviors, and evaluate the relationship between driver physical characteristics and vehicle fit. The methodology involved an instrumented vehicle equipped with TekScan pressure mapping systems, video cameras, and a videometric tracking system to record foot movements, positioning, and force application. Participants were divided into two groups: a medical conditions group comprising six drivers with peripheral neuropathy and two with recent right hip replacements, and a group of 18 normally aging drivers. Researchers collected data on anthropometry (height, femur, and tibia length), functional abilities, and cognitive status. The study analyzed foot movements during specific on-road maneuvers, including three-way stops, emergency stops, reversing, and parking, as well as gate access tasks. Additionally, the study examined seat positioning relative to the brake pedal to determine if poor vehicle fit was associated with stature, leg length, or sex. The results indicated that anthropometry, rather than medical status, accounted for the majority of significant differences in foot movements. Drivers with shorter stature and shorter tibia or femur lengths were more likely to lift their foot when transferring from the accelerator to the brake, rather than pivoting. These drivers also exhibited more efficient foot movements, longer foot hover times, and placed their feet closer to the center of the brake pedal. Sex differences were also observed; females were more likely to lift their foot and had faster transfer times, while males tended to pivot. Although normally aging participants pressed the brake slightly harder than those with medical conditions, there were no significant differences in on-road performance between the groups. However, drivers with medical conditions performed significantly poorer during parking tasks. Logistic regression analysis revealed that leg functional reach was significantly related to vehicle fit; as leg functional reach decreased, the probability of a good fit decreased. The study concludes that pedal extenders may offer a solution for drivers who must fully extend their legs to reach pedals while maintaining a safe distance from the airbag. The authors recommend that power-adjustable pedals be made standard equipment to improve fit for all drivers, particularly in multi-operator vehicles, thereby reducing the inconvenience of installing aftermarket extenders. Furthermore, the report suggests education initiatives to reinforce safe seat positioning for every trip. These findings provide critical insights for vehicle design and safety interventions aimed at reducing pedal misapplication errors among older drivers.
Key finding
Anthropometric factors, particularly leg functional reach and stature, accounted for the majority of significant differences in foot movements and pedal control, whereas medical status had minimal impact on on-road performance.
Methodology
on_road
Sample size: 24
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.
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
- Methodological Resource: validation psychometrics