Older driver highway design handbook : recommendations and guidelines
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 document provides design recommendations and guidelines to accommodate the needs and capabilities of older drivers on highways, particularly at intersections and interchanges. It synthesizes findings from accident data analyses, observational studies, and surveys to identify specific challenges older drivers face, such as difficulty with left turns, merging, and reading signage. The handbook offers specific engineering guidance on geometric design, signage, lighting, and traffic control to enhance safety and operational efficiency for this demographic. Key recommendations include increasing perception-reaction time allowances, improving contrast and visibility of road markings, and modifying signal timing. The conclusion emphasizes that these design adjustments can significantly improve highway safety for older drivers and the general driving population.
Key finding
Older drivers experience increased difficulty with complex driving tasks such as intersection navigation and freeway merging due to age-related sensory and cognitive declines, necessitating specific highway design modifications to improve safety.
Methodology
review
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 | empty | — | — | 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.
Topics
Ranked by relevance to this paper. Hover a topic for its definition.
- rail grade crossings
- perceptual countermeasures
- roadway lighting effects
- road geometry
- signage environment
- sign visibility legibility
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).
- Applied Guidance: design guidelines