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published journal article | September 2026

published journal article | July 2026

Transportation Labor Challenges for Gig Drivers

Susan Shaheen, Adam Cohen, Brooke Wolfe

policy brief | August 2026

When Seconds Count: Protecting Airports with Earthquake Early Warning Systems

Tyler Truksa, Selim Gunay, Adam Cohen, Atiila Kharobo, Yati Liu, Mark Hansen

white paper | May 2026

white paper |

Mobility 10x Summit: Accelerating Transportation Innovation Across California

Susan Shaheen, Brooke (Schmidt) Wolfe, Greer Cowan, Adam Cohen

published journal article | February 2026

published journal article | January 2026

Navigating the gig economy: transportation labor challenges facing California’s app-based ridehailing and courier drivers

Susan Shaheen, Brooke (Schmidt) Wolfe, Adam Cohen

white paper | March 2025

white paper | February 2025

Strategies for Improving Community College Access in California

Susan Shaheen, Jaquelyn Broader, Adam Cohen, Brooke (Schmidt) Wolfe

policy brief | March 2025

policy brief | February 2025

Student Access to Community College Relies Heavily on Private Vehicle Use

Susan Shaheen, Jaquelyn Broader, Adam Cohen, Brooke (Schmidt) Wolfe

policy brief | March 2025

policy brief | April 2024

Local Government Strategies to Improve Shared Micromobility Infrastructure

Susan Shaheen, Elliot Martin, Adam Cohen

policy brief | October 2024

policy brief | September 2024

Communities Are Experimenting with Microtransit to Fill Critical Gaps in Public Transit Service – What Have We Learned so Far?

Susan Shaheen, Elliot Martin, Brooke (Schmidt) Wolfe, Adam Cohen

policy brief | September 2024

policy brief | August 2024

Challenges and Opportunities Facing App-Based Gig Drivers Extend Beyond Driver Pay

Susan Shaheen, Jaquelyn Broader, Brooke (Schmidt) Wolfe, Adam Cohen

published journal article | September 2024

published journal article | November 2023

What Is the Connection? Understanding Shared Micromobility Links to Rail Public Transit Systems in Major California Cities

Susan Shaheen, Jacob Wasserman, Elliot Martin, Adam Cohen, Michael Hyland, Brooke (Schmidt) Wolfe, Mengying Ju

other | September 2024

other | September 2023

Video: Transit & Traffic: A Primer

John Gahbauer, Yan Xing, Adam Cohen, Juan Matute, Jacob Wasserman, Jeremy Epstein

policy brief | September 2024

policy brief | July 2023

Creative Reallocation of Curbs, Streets, and Sidewalks Accelerated by the Pandemic May be Here to Stay

Adam Cohen, Jaquelyn Broader, Susan Shaheen

white paper | September 2024

white paper | February 2024

Advanced Air Mobility: Opportunities, Challenges, and Research Needs for the State of California (2023-2030)

Jacqueline Huynh, Alex Bayen, Susan Shaheen, Adam Cohen

research report | September 2024

research report | April 2021

Double the Trouble: A Playbook for COVID-19 and Evacuations

Adam Cohen, Stephen Wong, Susan Shaheen

research report | September 2024

research report | January 2018

Shared Mobility Policy Briefs: Definitions, Impacts, and Recommendations

Adam Cohen, Susan Shaheen