Development, Implementation, and Evaluation of a Pedestrian Safety Zone for Elderly Pedestrians
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Summary
This study aimed to develop and evaluate a method for defining pedestrian safety zones to target countermeasures for adults aged 65 and older. Researchers applied a crash-based approach to identify high-risk areas in Phoenix and Chicago, using one-mile radius circles containing at least ten crashes. Comprehensive countermeasure programs, including engineering improvements and public education materials, were implemented in both cities, though full evaluation was conducted only in Phoenix. Data from Phoenix revealed a significant 46.3% reduction in crashes within the defined zones, despite an overall increase in city population and pedestrian crashes. The study concluded that the zone-based approach is an efficient and effective strategy for deploying pedestrian safety countermeasures.
Key finding
The implementation of targeted countermeasures in defined pedestrian safety zones resulted in a significant 46.3% reduction in crashes involving older adults in Phoenix.
Methodology
field_study
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 (7 acquisition events logged).
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | rosap | — | — | 2 | 2026-05-23 |
| archive | success | — | — | — | 1 | 2026-05-23 |
| extract | skipped | pdf_extracted | — | — | 4 | 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 | — | 3 | 2026-06-01 |
| tag | success | vector_similarity | — | — | 19 | 2026-06-11 |
| verify | success | — | — | — | 1 | 2026-06-03 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-01; verification: verified.
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Information type
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- Applied Guidance: countermeasure evaluation