Fast Lane - Exploring Human Behavior - Volume 16
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Summary
This document is a biannual progress report from the Federal Highway Administration’s Human Factors Team at the Turner-Fairbank Highway Research Center (TFHRC), summarizing research activities and milestones from early 2022. The report highlights ongoing Safety Research and Development Program efforts focused on human factors related to automated vehicles (AVs), vulnerable road users (VRUs), and traffic control devices. Several key studies have completed data collection. The "Enhancing Vulnerable Road User Detection and Volume Data Through Advanced Imaging Techniques" project evaluated infrared thermal sensors’ ability to detect various VRUs, including pedestrians, bicyclists, electric scooter riders, wheelchair users, and an articulated child pedestrian dummy, during both day and night conditions. In the realm of AV safety, the "Response to Emergency Vehicles When Driving in a Mixed Vehicle Fleet" study used the FHWA Highway Driving Simulator (HDS) to assess how cooperative technology and vehicle automation influence driver responses to emergency vehicles. Additionally, the "Driver Interaction With Partial Driving Automation Technology When Passing Bicyclists in a Shared Use Lane" study examined how automation affects driver interactions with VRUs. Another completed study, "Exploring the Effects of Vehicle Automation and Cooperative Messaging on Mixed Fleets Eco-Drive," evaluated the impact of in-vehicle messages, AVs, and adaptive cruise control on driver behavior. Infrastructure-related research included the conclusion of two miniSim™ experiments on truck platooning sign design and the completion of data collection for the "Evaluation of Additional Alternatives and Arrow Sizes for Overhead Arrow-Per-Lane Guide Signs," which is now undergoing analysis. The "Evaluation of Aesthetically Treated Crosswalks" project also finished data collection for both pedestrian and vehicle studies to determine the impact of aesthetic treatments on road user perception and behavior. Recent milestones include the completion of the literature review for the "Ensuring Cooperative Driving Automation and VRUs’ Safety Through Infrastructure" project, which examined the role of infrastructure in safe interactions between automated vehicles and VRUs. The team also finalized the "Driver Acceptance of Vehicle Automation–Function-Specific Automation (Level 1) Applications" project, which assessed driver acceptance and safety issues related to advanced driver assistance systems. Looking forward, the team has upgraded its Virtual Reality Lab with new equipment, including an omnidirectional treadmill, to facilitate future pedestrian safety research. The FHWA HDS is undergoing renovations to enhance simulation realism. The team plans to present findings on AV human factors and VRU safety at upcoming conferences, including the Automated Road Transportation Symposium and the Intelligent Transportation Systems World Congress, demonstrating research using articulated dummies and VR bike simulators.
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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 (17 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 | — | — | 6 | 2026-06-15 |
| 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 | 17 | 2026-06-15 |
| tag | success | vector_similarity | — | — | 19 | 2026-06-11 |
| verify | success | — | — | — | 1 | 2026-06-15 |
Summary generated by qwen3.6-27b-prismaquant on 2026-06-15; verification: verified.
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