Development of Vehicle-to-Infrastructure Applications Program: Seventh Annual Report
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Summary
This report documents the activities and accomplishments of the Development of Vehicle-to-Infrastructure (V2I) Applications Program during its seventh year (July 1, 2020, through June 30, 2021). Sponsored by the U.S. Department of Transportation’s Federal Highway Administration and executed by Crash Avoidance Metrics Partners LLC (CAMP), the program aims to develop and test V2I safety, mobility, environmental, and automation applications. The work is conducted through consortia comprising major automotive manufacturers, including Ford, General Motors, Hyundai, Honda, Nissan, Toyota, and VW/Audi. The report details progress on four primary initiatives: Traffic Optimization for Signalized Corridors (TOSCo), Cooperative Automated Driving Systems (CADS), Event-Driven Configurable Messaging (EDCM), and Stakeholder Engagement. The TOSCo project, which focuses on optimizing traffic flow at signalized intersections, progressed from Phase 1 modeling to Phase 2 system implementation. During the reporting period, the consortium refined vehicle algorithms, built four test vehicles with TOSCo capability, and developed portable On-board Equipment (OBE) units. Significant technical work included integrating queue detection algorithms from the Texas Transportation Institute and Denso software contributions into vehicle-level simulations. The team conducted closed-course vehicle subsystem testing and infrastructure subsystem verification, shifting the test corridor from State Highway 105 to FM 1960 in Texas. Integration testing was performed at the Texas A&M RELLIS facility, and infrastructure deployment schedules were finalized. The Cooperative Automated Driving Systems (CADS) project concluded in July 2020. Its primary objective was to define cooperative automation technologies to improve freeway mobility. The consortium developed a high-level Concept of Operations (ConOps), system requirements, and hazard analyses for Improved Freeway Mobility (IFM). The team engaged with the FHWA and the IOO/OEM Forum to align these efforts with the USDOT’s cooperative automation research roadmap and the Cooperative Automation Research Mobility Applications (CARMA) platform. The Event-Driven Configurable Messaging (EDCM) project, focused on flexible messaging for work zone queue advisory and warning systems, concluded in December 2020. The consortium selected eXtensible Markup Language (XML) to support scalable, two-way data exchange between vehicles and Traffic Management Centers. They developed XML schemas for query and response messages, defined system requirements for low- and high-fidelity in-vehicle applications, and created an end-to-end reference bench test system. These efforts supported the development of Road Safety Message (RSM) data elements for work zone applications. Finally, the Stakeholder Engagement and Outreach project facilitated the deployment of V2I technologies by supporting standards development and infrastructure owner-operator needs. Key activities included contributing to SAE J2945 standards for mapping, signal phase and timing, and roadside safety messages. The consortium also promoted the use of work zone mapping tools and shared lessons learned from field tests in Texas, Arizona, and California. Collectively, these efforts advance the deployment of cooperative vehicle-infrastructure systems to enhance safety, mobility, and environmental performance.
Key finding
The report documents the completion of system architecture definitions, hazard analyses, and subsystem verification testing for the Traffic Optimization for Signalized Corridors project, alongside the finalization of messaging schemas and operational concepts for Event-Driven Configurable Messaging.
Methodology
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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 (6 acquisition events logged).
| Stage | Outcome | Tool | Model | Prompt | Attempts | Completed |
|---|---|---|---|---|---|---|
| discover | success | rosap | — | — | 2 | 2026-05-23 |
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| extract | success | cached | — | — | 2 | 2026-06-10 |
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| 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.
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- Applied Guidance: countermeasure evaluation, standards test procedures
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