Transportation Research Board Annual Meeting

2026 · Washington, D.C. — Three poster presentations connecting network-scale safety analytics, emerging sensing, and the transportation workforce.

Presentation archive

Research shared at this conference.

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Poster presentation

Can Surrogate Safety Measures Explain Crash Patterns at Signalized Intersections? Evidence from Large-Scale Connected-Vehicle Data Using Negative Binomial, Random Forest, and Diffusion GNN Models

Examines how connected-vehicle surrogate safety measures relate to observed crash patterns through complementary statistical, machine-learning, and graph-based models.

Publication: Journal of Safety Research article ↗Request slides or poster ↗

Poster presentation

AI-Driven Extraction of Network-Wide Safety Indicators from Next-Generation Sensing Sources

Presents a pipeline for turning emerging sensing sources into consistent, network-scale indicators that can support proactive safety screening.

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Poster presentation

Identifying and Addressing Workforce Gaps in Transportation Infrastructure Projects: Evidence from Employer-Practitioner Surveys and Topic Modeling

Uses survey evidence and natural-language methods to surface workforce needs that affect transportation-infrastructure delivery and implementation.

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Conference photos

Selected moments from the event.

Mehrdad Nasri with a connected-vehicle safety research poster at TRB 2026 — Presenting network-wide connected-vehicle safety research at TRB 2026.

TRB 2026 research presentation — A research exchange during the Transportation Research Board Annual Meeting.

TRB 2026 conference moment — Discussing transportation-safety methods with the research community.

TRB 2026 professional gathering — A conference moment from Washington, D.C.