Transportation

May 2026

Gridlock 2050: A Call to Action

“This report lays out a bold but achievable vision: an integrated and financially sustainable statewide transportation system that connects people, communities, and economic opportunity across all modes…”

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October 2025

Cascadia’s AI Moment?: Confronting Today’s Challenges to Become Tomorrow’s Global Leader

“The report outlines how Cascadia can strengthen its fundamentals while seizing a once-in-a-generation opportunity to lead in the defining technology of our time—artificial intelligence…”

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Transportation

June 2023

Keeping It on the Tracks: High-Speed Rail Success and Lessons Learned

This study provides information useful to transportation agencies, potential partners, and decision makers who seek to develop an ultra-high-speed line to connect Cascadia…

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Transportation

March 2023

2022 Seattle Commute Survey

This report provides insights from the Washington State Commute Trip Reduction (CTR) citywide dataset along with small businesses surveyed in the Center City and across the city…

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Transportation

June 2021

Beyond Incident Response: Mitigating Impacts of Major Traffic Incidents in the Seattle I-5 Corridor

Regional stakeholders came together to articulate a shared vision that builds on past accomplishments, works beyond agency silos, and embraces opportunities offered by new technological capabilities…

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Transportation

May 2017

Challenge Seattle 2017 Annual Report on Transportation

We made a commitment to publish an Annual Report to track the region’s progress on achieving the vision—a user-focused transportation system that is safe, reliable, equitable, and environmentally sustainable…

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Transportation

June 2016

Transportation: Working Together for a Better Future

We need to be bold. Considering the growth we face, this means not just preparing for tomorrow, but for the decades ahead…

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Gridlock 2050: A Call to Action

Cascadia’s AI Moment?: Confronting Today’s Challenges to Become Tomorrow’s Global Leader

Keeping It on the Tracks: High-Speed Rail Success and Lessons Learned

2022 Seattle Commute Survey

Beyond Incident Response: Mitigating Impacts of Major Traffic Incidents in the Seattle I-5 Corridor

Challenge Seattle 2017 Annual Report on Transportation

Transportation: Working Together for a Better Future

Latest Reports

Gridlock 2050: A Call to Action

Challenge Seattle 2025 Annual Report

Cascadia’s AI Moment?: Confronting Today’s Challenges to Become Tomorrow’s Global Leader