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policy brief | March 2025

policy brief | February 2025

Building Transit Safety Surveys that Matter: Lessons from San Francisco Muni

Jacob Wasserman, Madeline Brozen, Anastasia Loukaitou-Sideris

published journal article | March 2025

published journal article | January 2025

What Makes the Route More Traveled? Optimizing U.S. Suburban Microtransit for Sustainable Mobility

Alexandra Pan, Susan Shaheen

research report | February 2025

Capturing Transit Rider Perspectives on Safety and Harassment: Lessons from San Francisco

Jacob Wasserman, Madeline Brozen, Anastasia Loukaitou-Sideris

policy brief | February 2025

policy brief | January 2025

Automobile Debt Increased Substantially during the Pandemic

Evelyn Blumenberg, Samuel Speroni, Fariba Siddiq, Jacob Wasserman

published journal article | February 2025

published journal article | October 2020

Quantifying the Employment Accessibility Benefits of Shared Automated Vehicle Mobility Services: Consumer Welfare Approach Using Logsums

Tanjeeb Ahmed, Michael Hyland, Navjyoth Sarma , Arash Ghaffar

policy brief | February 2025

policy brief | October 2024

The Costs and Gains of Raising Truck Speed Limits

Michael Zhang, Sarder Rafee Musabbir

policy brief | February 2025

policy brief | January 2025

Debt Burden from Automobile Loans Exacerbates Racial Inequality in California’s Communities

Evelyn Blumenberg, Samuel Speroni, Fariba Siddiq, Jacob Wasserman

policy brief | January 2025

policy brief | August 2024

On-Road Motor Vehicles No Longer Dominate Ozone Formation

Michael Kleeman

published journal article | January 2025

published journal article | June 2020

The Eighty-Five Percent Solution: A Historical Look at Crowdsourcing Speed Limits and the Question of Safety

policy brief | January 2025

policy brief | September 2020

The Eighty-Five Percent Solution: Is Crowdsourcing Speed Limits the Best Approach to Traffic Safety?

Brian D. Taylor, Mark Garrett, Yu Hong Hwang

policy brief | January 2025

policy brief | January 2021

Raising Truck Speed Limits in California Could Increase Mobility But May Also Increase Crashes

Michael Zhang, Sarder Rafee Musabbir

policy brief | January 2025

Affordable Housing Residents in San Diego County Are Generally Satisfied With Transit Service, but There is Room for Improvement

Josh Newton, Jennifer Nations, Haven Lo

policy brief | January 2025

policy brief | May 2023

Robo-Taxis Are Likely to Increase Job Accessibility, Especially Among Low-Income Households

Michael Hyland, Tanjeeb Ahmed

policy brief | January 2025

policy brief | November 2024

Justice-Centered Mapping Tools for Selecting Electric Vehicle Charger Locations

Kenneth Paul Alex, Ted Lamm, Daniel Kammen

website | January 2025

website |

Trip Referral Portal for Accessible Transportation in Contra Costa County

Joshua Meng

published journal article | January 2025

published journal article | November 2023

Decisions & Distance: The Relationship Between Child Care Access and Child Care Travel

Evelyn Blumenberg, Madeline Wander, Zhiyuan Yao

research report | January 2025

research report | September 2024

Developing a Safety Effectiveness Evaluation Tool for California

Jia Li, Michael Zhang, Yanlin Qi

published journal article | November 2024

published journal article | July 2021

Brake and Tire Particles Measured from On-road Vehicles: Effects of Vehicle Mass and Braking Intensity

Yifang Zhu, Farzan Oroumiyeh

research report | November 2024

research report | October 2024

Evaluating Universal Basic Mobility Pilot Programs in Oakland and Bakersfield, California

Angela Sanguinetti, Eli Alston-Stepnitz, Leslie Nelson, Emily Searl, Ashley DePew

policy brief | November 2024

policy brief | October 2024

Equity Assessment of Transportation Should Incorporate Materials,Supply Chains, and Targeted Mitigation Policies

Fiona Greer, Arpad Horvath, Ahmad Bin Thaneya, Joshua Apte, Jasenka Rakas