Area of Expertise: Travel Behavior, Land Use, & the Built Environment

Our Experts

Daniel Chatman, Ph.D.

Daniel G. Chatman

Chair and Professor, Department of City & Regional Planning, UC Berkeley

Areas of Expertise

Intelligent Transportation Systems, Emerging Technologies, & Big Data Travel Behavior, Land Use, & the Built Environment

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Recent Projects

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Towards More Credible VMT Forecasts for Project-Level Analysis in California

Research Team:

Daniel G. Chatman (lead), Amy Lee, Jamey Volker, Elisa Barbour, Marta Gonzalez, Susan Handy, Michael Manville

UC Campus(es):

UC Berkeley, UC Davis, UCLA

Exploring the Impacts of Working at Home and Online Shopping on Post-Pandemic Travel and Transportation Policy in California

Research Team:

Daniel G. Chatman (lead), Yage Liu

UC Campus(es):

UC Berkeley

Assessing the Perspective of Labor Unions on California’s Policy Goals Related to Sustainable Transportation

Research Team:

Daniel G. Chatman (lead), Tamara Kerzhner

UC Campus(es):

UC Berkeley

Recent Publications

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Policies to Improve Transportation Sustainability, Accessibility, and Housing Affordability in the State of California

December 1, 2023

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Insights on Autonomous Vehicle Policy from Early Adopter Cities and Regions

October 1, 2019

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Autonomous Vehicles in the United States: Understanding Why and How Cities and Regions Are Responding

August 1, 2019

Our Experts

Karen Chapple

Karen Chapple

Professor Emerita, Department of City and Regional Planning, UC Berkeley

Areas of Expertise

Freight, Logistics, & Supply Chain Travel Behavior, Land Use, & the Built Environment

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Recent Projects

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Identifying Strategies to Preserve Transit-accessible Affordable Housing

Research Team:

Karen Chapple (lead), Madeleine Parker

UC Campus(es):

UC Berkeley

The Impacts of Upzoning on Housing Production and Communities in California

Research Team:

Carolina Reid (lead), Carol Galante, Jared Nolan, Simon Hochberg, Elizabeth Kneebone, David Garcia, Anna Cash, Karen Chapple

UC Campus(es):

UC Berkeley

Regional Industrial Land Preservation: Perspectives from San Francisco Bay Area Cities on a Priority Production Area Program

Research Team:

Karen Chapple (lead)

UC Campus(es):

UC Berkeley

Recent Publications

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Will California Lose Thousands of Affordable Homes Near Transit?

March 26, 2026

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Strategies to Preserve Transit-accessible Affordable Housing in Southern California

August 1, 2023

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Using GPS Tracking to Understand the Transportation Costs of Displacement: A San Francisco Pilot

March 1, 2019

Our Experts

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Michael Cassidy

Robert Horenjeff Professor, Department of Civil and Environmental Engineering, UC Berkeley

Areas of Expertise

Infrastructure Delivery, Operations, & Resilience Public Transit, Shared Mobility, & Active Transportation Safety, Public Health, & Mobility Justice Travel Behavior, Land Use, & the Built Environment Zero-Emission Vehicles & Low-Carbon Fuels

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Recent Projects

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Re-Examining Induced Travel in California

Research Team:

Michael Cassidy (lead), Jean Doig Godier, Atiila Kharobo

UC Campus(es):

UC Berkeley

Informing the Placement of Cordon Lines to Optimize Impacts of Congestion Pricing

Research Team:

Michael Cassidy (lead), Carlos Daganzo

UC Campus(es):

UC Berkeley

Optimizing the Roll-Out of the Innovative Clean Transit Rule with a Focus on Suburban Settings

Research Team:

Michael Cassidy (lead), Carlos Daganzo, Jean Doig Godier, Yueyue Fan, Wesley Darling, Yunteng Zhang

UC Campus(es):

UC Berkeley, UC Davis

Recent Publications

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Public Transit
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Transportation Network Companies Could Be a Cost Effective Alternative to Microtransit in Low-Density Communities

March 1, 2026

Public Transit
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Partnering with Transportation Network Companies to Serve Low-Density Communities

February 2, 2026

Public Transit
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Subsidizing Transportation Network Companies to Support Commutes by Rail

March 21, 2024

Our Experts

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Pierpaolo Cazzola

Senior Researcher, UC Davis Institute of Transportation Studies Europe Center, UC Davis

Areas of Expertise

Travel Behavior, Land Use, & the Built Environment Zero-Emission Vehicles & Low-Carbon Fuels

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Recent Projects

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Comparing California and European Strategies for Reaching Very Low Carbon Transportation Systems

Research Team:

Lewis Fulton (lead), Pierpaolo Cazzola, Marshall Miller, Aditya Ramji

UC Campus(es):

UC Davis

Recent Publications

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Comparison of Low-Carbon Transport Strategies in California and Europe

August 17, 2026

Our Experts

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David Brownstone

Professor Emeritus, Department of Economics, UC Irvine

Areas of Expertise

Public Transit, Shared Mobility, & Active Transportation Safety, Public Health, & Mobility Justice Travel Behavior, Land Use, & the Built Environment

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Recent Projects

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Sustaining the Transition: Developing Analytical Tools to Evaluate Policies, Infrastructure, and Global Trends Affecting Affordable Light-Duty ZEV Adoption in California

Research Team:

Gil Tal (lead), Matthew Favetti, Jae Hyun Lee, Gregory Pierce, David Brownstone, Ethan Elkind, David Bunch

UC Campus(es):

UC Berkeley, UC Davis, UC Irvine, UCLA

Fast-tracking ZEVs: Supporting California’s Decarbonization of Commercial Vehicles through Innovative Modeling, Analysis, and Policy Development

Research Team:

Jean-Daniel Saphores (lead), Roland Hwang, Craig Rindt, Stephen Ritchie, David Brownstone, James Fishelson, David Bunch, Jiawei Chen, Jingyuan Zhao, Matthew D. Dean, Wenlong Jin, Timothy Lipman, Lewis Fulton, Miguel Jaller

UC Campus(es):

UC Berkeley, UC Davis, UC Irvine

Evaluating Heterogeneity in Transit Safety Perceptions and Reliability among Young Transit Riders

Research Team:

David Brownstone (lead), Henry Bernal

UC Campus(es):

UC Irvine

Recent Publications

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Public Transit
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Exploring Transportation Mode Choice and Participation in LA Metro’s “GoPass” Program Among Los Angeles Community College Students

July 2, 2026

Public Transit
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Free Transit Helps Students—But Car Access, Transit Quality, and Perceptions Still Shape Who Benefits

June 22, 2026

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A Review of Pricing Strategies for Decarbonizing Transportation

June 1, 2026

Our Experts

Evelyn Blumenberg

Director (Lewis Center); Professor, UCLA Lewis Center for Regional Policy Studies; Department of Urban Planning, UCLA

Areas of Expertise

Public Transit, Shared Mobility, & Active Transportation Safety, Public Health, & Mobility Justice Travel Behavior, Land Use, & the Built Environment

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Recent Projects

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Closing the Urban-Suburban Travel Gap for Low-income Travelers

Research Team:

Evelyn Blumenberg (lead), Sang-O Kim, Madeline Brozen

UC Campus(es):

UCLA

Transportation and Wildfire Evacuation: Lessons from the 2025 Los Angeles Wildfires

Research Team:

Hao Ding (lead), Evelyn Blumenberg

UC Campus(es):

UCLA

Complement or Substitute? Understanding How a Mobility Wallet Interacts with Transit Discount Programs in Los Angeles

Research Team:

Madeline Brozen (lead), Evelyn Blumenberg, Brian Harold, Caroline Rodier, Sang-O Kim

UC Campus(es):

UCLA

Recent Publications

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No Car, No Choice: Transportation Resources and School Choice in California

June 1, 2026

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Mobility Wallets Expand Opportunity and Quality of Life for Low-Income Travelers

June 1, 2026

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Transportation Challenges of Low-Income Households with Children: A Case Study in South Los Angeles

February 26, 2026

Our Experts

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Eric Biber

Edward C. Halbach Jr. Professor of Law, Berkeley Law, UC Berkeley

Areas of Expertise

Travel Behavior, Land Use, & the Built Environment

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Recent Projects

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Factors Affecting Development Decisions and Construction Delay of Housing in Transit-Accessible and Jobs-Rich Areas in California

Research Team:

Nicholas Marantz (lead), Jae Hong Kim, Douglas Houston, Moira O'Neill, Eric Biber, Douglas Houston, Sarah Lindbergh, Narae Lee, Giulia Gualco-Nelson

UC Campus(es):

UC Irvine

Recent Publications

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Factors Affecting Development Decisions and Construction Delay of Housing in Transit-Accessible and Jobs-Rich Areas in California

July 18, 2022

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What Can Be Done to Speed Up Building Approval for Multifamily Housing in Transit-Accessible Locations?

July 18, 2022

Our Experts

Tierra Bills

Assistant Professor, Public Policy and Civil and Environmental Engineering, UCLA

Areas of Expertise

Travel Behavior, Land Use, & the Built Environment

Contact

Recent Projects

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Transportation Needs for Wildfire Recovery and Resilience for Vulnerable Communities

Research Team:

Tierra Bills (lead), Kailong Ji

UC Campus(es):

UCLA

New Mobility for Disadvantaged Communities: Assessing Community-Driven Strategies for Implementing Microtransit Services

Research Team:

Tierra Bills (lead)

UC Campus(es):

UCLA

Developing a Multi-Dimensional Tool for Prioritizing Capital Street Projects in Los Angeles

Research Team:

Sriram Narasimhan (lead), Debasish Jana, Tierra Bills, Ertugrul Taciroglu, Sven Malama

UC Campus(es):

UCLA

Recent Publications

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No Car, No Choice: Transportation Resources and School Choice in California

June 1, 2026

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From Data to Decisions: A Road Prioritization Framework for Resilience, Risk, and Fairness

April 1, 2026

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Pathways to Equity in Travel Demand Modeling: An Evaluation of Auto Ownership Outcomes Using Choice Set Modeling

December 2, 2025

Our Experts

Headshot of Jesus Barajas

Jesus M. Barajas

Assistant Professor, Department of Environmental Science and Policy, UC Davis

Areas of Expertise

Safety, Public Health, & Mobility Justice Travel Behavior, Land Use, & the Built Environment

Contact

Recent Projects

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Investigating Unmet Travel Needs in Disadvantaged and Rural Communities: Can Sustainable Transportation Meet these Needs?

Research Team:

Scott Hardman (lead), Jesus M. Barajas, Weijing Wang

UC Campus(es):

UC Davis

Analyzing the Effectiveness of Efforts to Reconnect Communities and Redress Past Harms in California

Research Team:

Paul Ong (lead), Jacob Wasserman, Douglas Houston, Margaretta Lin, Jesus M. Barajas, Charisma Acey

UC Campus(es):

UC Berkeley, UC Davis, UC Irvine, UCLA

A Comprehensive Evaluation of Transportation Equity Metrics

Research Team:

Jesus M. Barajas (lead), Weijing Wang

UC Campus(es):

UC Davis

Recent Publications

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No Car, No Choice: Transportation Resources and School Choice in California

June 1, 2026

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Investigating Unmet and Difficult Travel in Underserved Communities in California

May 1, 2026

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Traffic Collisions Change How Victims Think About Safety

September 1, 2025

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