Human Factors Laboratory [Fact Sheet]
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Summary
This document serves as a fact sheet describing the Human Factors Laboratory (HFL) within the Federal Highway Administration’s (FHWA) Office of Safety and Traffic Operations R&D. The laboratory’s primary objective is to delineate the capabilities and limitations of drivers to inform transportation safety and design. The facility supports two categories of research: applied studies evaluating the effectiveness of new or modified traffic control devices through improvements in conspicuity, legibility, detection, and message content; and fundamental theoretical studies addressing human perception, cognition, and motor functions related to the driving task. The HFL comprises two distinct experimental areas equipped with specialized instrumentation. Experimental Area 1 is a 12-by-40-foot room designed for static measures, featuring rear-projection capabilities, noise control, and copper screening to exclude radio frequencies. This shielding allows for the collection of low-level physiological signals, including heart and respiration rates, galvanic skin response, and electroencephalograms. This area utilizes slide projectors, tachistoscopes, and stimulus control apparatus to study detection, reaction capabilities, information retention, and stress. Experimental Area 2 focuses on dynamic behavior at intersections, bifurcations, and ramps. It employs a modified A Etna Driv-O-Trainer with three wide-screen projection televisions and synchronized video cassette recorders to present 120-degree field-of-view scenes. This setup collects data on gap acceptance, head movements, and speed estimation to recommend improvements in road signing and geometry. A supporting Graphics Center produces stimulus materials for both the HFL and the DOT/FHWA Highway Driving Simulator (HYSIM), which is used for follow-up studies requiring a more dynamic environment. The laboratory’s findings and outputs serve three main purposes: defining objectives for larger research efforts, providing recommendations to the National Committee on Uniform Traffic Control Devices for updates to the Manual on Uniform Traffic Control Devices, and generating data for staff research reports. Representative past studies include analyses of interstate guide sign legibility, driver response to lane closure barricades, perception of risk relative to highway geometry, and the performance of drivers with physical limitations at T-intersections. The significance of the HFL lies in its role in translating human factors data into practical traffic control standards. Future research emphasis is directed toward defining the capabilities and limitations of senior drivers. These studies aim to identify special needs within this demographic and determine potential remediation strategies, while continuing to evaluate new and modified traffic control devices.
Key finding
The Human Factors Laboratory provides specialized experimental environments and equipment to conduct applied and fundamental research on driver capabilities, limitations, and responses to traffic control devices.
Methodology
other
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 | — | — | 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-prismaquant | summ-v5 | 6 | 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.
- rail grade crossings
- visual occlusion
- simulator validity fidelity
- crash reconstruction hf
- perceptual countermeasures
- useful field of view
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: tool software
- Theoretical Contribution: theory or model