Zephyr's activities and projects span 3 pillars—build community, expand knowledge, and promote standards. Filter above to explore each. Prefer to get involved at the organization level instead? Check out our committees.
We connect people across academia, public agencies, consultancies, and data and software providers to strengthen collaboration throughout the profession.
We steward the profession's knowledge by helping the community discover, preserve, and share technical expertise and practical experience.
We improve professional practice by advancing open standards, shared tools, and best practices that make travel analysis more transparent, interoperable, and reproducible.
An online Community of Practice for the Travel Model Improvement Program, sharing decades of webinars and expertise.
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Open-source, activity-based travel behavior modeling software built and maintained by a consortium of planning agencies.
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A working group promoting practical approaches to travel forecasting and planning decisions under deep uncertainty.
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Open data specifications and tools—like GMNS and NetworkWrangler—for building and sharing routable travel model networks.
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Badges recognizing open-source software tools that meet Zephyr's development and transparency criteria.
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Badges recognizing open, reproducible transportation research to encourage sharing of data, code, and models.
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A data standard for fixed-route transit ridership, revealing where and how riders actually use the system.
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Periodic online sessions sharing practical travel-modeling knowledge with the Zephyr community.
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The premier conference for professionals working with travel models, transportation data, and quantitative analysis.
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A working group developing shared methods and practice for travel diary survey design and analysis.
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A community of practice for planners and researchers using the UrbanSim land use modeling platform.
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