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

Our Experts

Pei (Peggy) Wang

Research Engineer, California Partners for Advanced Transportation Technology (PATH), UC Berkeley

Areas of Expertise

Intelligent Transportation Systems, Emerging Technologies, & Big Data Safety, Public Health, & Mobility Justice Travel Behavior, Land Use, & the Built Environment

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Recent Projects

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Trajectory Planning for Connected and Automated Vehicles in Work Zones

Research Team:

Pei (Peggy) Wang (lead), Xinwei Yang

UC Campus(es):

UC Berkeley

Accessibility of Shared Automated Vehicles for Visually Impaired Travelers

Research Team:

Pei (Peggy) Wang (lead), Rui Lin, Benjamin Yi

UC Campus(es):

UC Berkeley

Drivers’ Responses to Eco-driving Applications: Effects on Fuel Consumption and Driving Safety

Research Team:

Pei (Peggy) Wang (lead), Ching-Yao Chan

UC Campus(es):

UC Berkeley

Recent Publications

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policy brief

Shared Automated Vehicles Could Greatly Benefit Visually Impaired Travelers if Designed and Operated with Their Needs in Mind

August 1, 2025

Travel Behavior City
research report

Drivers’ Responses to Eco-driving Applications: Effects on Fuel Consumption and Driving Safety

August 1, 2025

conference paper

Accessibility of Shared Automated Vehicles for the Visually Impaired Travelers

July 29, 2025

Our Experts

Joan Walker, Ph.D.

Joan Walker

Professor, Department of Civil and Environmental Engineering, 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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Matching Technique with Authority: A Study of How Local DOTs Can Narrow the Gap between their Network Management Authority and their Analytical Capacity

Research Team:

Jane Macfarlane (lead), Joan Walker

UC Campus(es):

UC Berkeley

Evaluating Accessibility and Equity Impacts of Pandemic Transit Service Adjustments: A Case Study of the San Francisco Bay Area

Research Team:

Joan Walker (lead), Johanna Zmud, Phoebe Ho

UC Campus(es):

UC Berkeley

Community College Transportation Access: A California Case Study

Research Team:

Susan Shaheen (lead), Adam Cohen, Madeline Brozen, Evelyn Blumenberg, Joan Walker, Rasik Hussain, Nicole Matteson, Aqshems Nichols

UC Campus(es):

UC Berkeley, UCLA

Recent Publications

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research report

Matching Technique with Authority: A Study of How Local DOTs Can Narrow the Gap between their Network Management Authority and their Analytical Capacity

September 8, 2025

policy brief

Mobiliti—A New Tool to Guide Safer, More Equitable Traffic Management Strategies

September 4, 2025

Travel Behavior City
research report

Job Accessibility Impacts of Pandemic Transit Service Adjustments in the San Francisco Bay Area

February 1, 2025

Our Experts

Jeffrey M. Vincent

Director, Berkeley Infrastructure Initiative (BI2), UC Berkeley

Areas of Expertise

Travel Behavior, Land Use, & the Built Environment

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Recent Projects

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How Well Do New K-12 Public School Sites in California Incorporate Mitigation Measures Known to Reduce Vehicle Miles Traveled?

Research Team:

Jeffrey M. Vincent (lead), Sandra Mukasa, Jamie Albrecht, Karen Frick

UC Campus(es):

UC Berkeley

Recent Publications

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Travel Behavior City
policy brief

How Well Are Newly Sited K-12 Schools Incorporating Vehicle Miles Traveled Mitigation Measures?

July 7, 2022

Travel Behavior City
research report

How Well Do New K-12 Public School Sites in California Incorporate Mitigation Measures Known to Reduce Vehicle Miles Traveled?

June 13, 2022

Our Experts

Jamey Volker

Professional Researcher, National Center for Sustainable Transportation, UC Davis

Areas of Expertise

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

Improving Induced Travel Demand Forecasting for Different Road Types: A Research Synthesis and Meta-Analysis

Research Team:

Jamey Volker (lead), Keuntae Kim

UC Campus(es):

UC Davis

Highway Expansions and Environmental Review: A Case Study Review of How Agencies are Addressing Induced Travel and Related Impacts

Research Team:

Amy Lee (lead), Susan Handy, Jamey Volker

UC Campus(es):

UC Davis, UCLA

Recent Publications

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Travel Behavior City
policy brief

California’s SB 375 Falls Short in Streamlining Transit-Oriented Development, But this Could be Fixed

April 6, 2026

policy brief

Mitigating VMT from Highway Expansion Projects: Early Insights from California

March 1, 2026

Travel Behavior City
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Can Governments Streamline Environmental Impact Analysis to Promote Transit Oriented Development? Evidence from California

March 1, 2025

Our Experts

Brian Taylor no bg

Brian D. Taylor

Professor, Urban Planning and Public Policy, UCLA

Areas of Expertise

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

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Recent Projects

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Building a Sustainable Future for California Public Transit

Research Team:

Kari Edison Watkins (lead), Jacob Wasserman, Juan Matute, Brian D. Taylor, Michael Hyland, Daniel Rodriguez, Susan Shaheen, Susie Pike

UC Campus(es):

UC Berkeley, UC Davis, UC Irvine, UCLA

Do Post-Pandemic Travel Shifts Warrant Changes to California’s Transportation Policies and Plans?

Research Team:

Brian D. Taylor (lead), Hao Ding

UC Campus(es):

UCLA

What is the Best Way to Organize and Coordinate Public Transit Service in Large Metropolitan Areas?

Research Team:

Brian D. Taylor (lead), Hao Ding

UC Campus(es):

UCLA

Recent Publications

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Public Transit
research report

What are the Best Ways to Organize, Coordinate, and Deliver Public Transit Service in Large Metropolitan Areas? A Research Synthesis

March 3, 2026

Public Transit
policy brief

Organizing and Delivering Public Transit Service in California

February 26, 2026

Travel Behavior City
Icon for peer review journal article preprint published journal article

The Evolving Travel and Driving Behaviors of Older U.S. Travelers in the 21st Century

December 4, 2025

Our Experts

Susan Shaheen

Professor, Department of Civil and Environmental Engineering, UC Berkeley

Areas of Expertise

Freight, Logistics, & Supply Chain Infrastructure Delivery, Operations, & Resilience Intelligent Transportation Systems, Emerging Technologies, & Big Data Public Transit, Shared Mobility, & Active Transportation Safety, Public Health, & Mobility Justice Travel Behavior, Land Use, & the Built Environment Zero-Emission Vehicles & Low-Carbon Fuels

Contact

Recent Projects

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Building a Sustainable Future for California Public Transit

Research Team:

Kari Edison Watkins (lead), Jacob Wasserman, Juan Matute, Brian D. Taylor, Michael Hyland, Daniel Rodriguez, Susan Shaheen, Susie Pike

UC Campus(es):

UC Berkeley, UC Davis, UC Irvine, UCLA

Designing Microtransit Services to Complement Public Transit

Research Team:

Susan Shaheen (lead), Susie Pike, Kari Edison Watkins, Adam Cohen, Michael Hyland

UC Campus(es):

UC Berkeley, UC Davis, UC Irvine

Assessing the Potential Equity Impacts of the Clean Miles Standard (SB 1014) with an Emphasis on Part-Time Ridehail Drivers

Research Team:

Susan Shaheen (lead), Elliot Martin, Mengying Ju

UC Campus(es):

UC Berkeley

Recent Publications

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book/book chapter

Mobility 10X: Accelerating Transportation Innovation in California

January 28, 2026

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

January 23, 2026

Public Transit
policy brief

What Should Agencies Measure to Decide if Microtransit Is Working?

January 1, 2026

Our Experts

Jean-Daniel Saphores

Jean-Daniel Saphores

Director; Professor, Department of Civil and Environmental Engineering, UC Irvine

Areas of Expertise

Freight, Logistics, & Supply Chain Infrastructure Delivery, Operations, & Resilience Intelligent Transportation Systems, Emerging Technologies, & Big Data 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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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

Transportation and Food Access: A Comparison between Santa Ana, CA, and Syracuse, NY

Research Team:

Jean-Daniel Saphores (lead), Anne C. Bellows

UC Campus(es):

UC Irvine

Understanding Post-Pandemic Travel Behavior Patterns and Trends in California

Research Team:

Jean-Daniel Saphores (lead), Sabah Hossain Iqra, Llorenc Miquel

UC Campus(es):

UC Irvine

Recent Publications

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Travel Behavior City
research report

Understanding Post-Pandemic Travel Behavior Patterns and Trends in California

July 1, 2026

Zero Emission Vehicle plugged in
policy brief

Can California Power Electric Construction Equipment at Scale?

June 1, 2026

white paper

A Review of Pricing Strategies for Decarbonizing Transportation

June 1, 2026

Our Experts

Daniel Rodriguez

Daniel Rodriguez

ITS-Berkeley Director; Chancellor's Professor, Department of City and Regional Planning, UC Berkeley

Areas of Expertise

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

Contact

Recent Projects

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Building a Sustainable Future for California Public Transit

Research Team:

Kari Edison Watkins (lead), Jacob Wasserman, Juan Matute, Brian D. Taylor, Michael Hyland, Daniel Rodriguez, Susan Shaheen, Susie Pike

UC Campus(es):

UC Berkeley, UC Davis, UC Irvine, UCLA

Assessing the Equity Legacy of Mega-Event Transit Investments: Accessibility Impacts of Los Angeles’ ‘28 by 28’ Projects

Research Team:

Daniel Rodriguez (lead), Gregório Luz

UC Campus(es):

UC Berkeley

Rail Transit Ridership in California: Lessons Learned from Station Area Assessments

Research Team:

Daniel Rodriguez (lead), Susie Pike, Michael McNally, Meiqing Li

UC Campus(es):

UC Berkeley, UC Davis, UC Irvine

Recent Publications

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Public Transit
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Rail transit ridership changes in COVID-19: Lessons for station area planning in California

September 23, 2025

Public Transit
research report

Rail Transit Ridership Changes in COVID-19: Lessons from Station Area Characteristics

September 1, 2024

Public Transit
policy brief

Decline of Rail Transit Requires New Strategies

September 1, 2024

Our Experts

Stephen Ritchie

Chancellor's Professor, Department of Civil and Environmental Engineering, UC Irvine

Areas of Expertise

Freight, Logistics, & Supply Chain Infrastructure Delivery, Operations, & Resilience Intelligent Transportation Systems, Emerging Technologies, & Big Data Safety, Public Health, & Mobility Justice Travel Behavior, Land Use, & the Built Environment Zero-Emission Vehicles & Low-Carbon Fuels

Contact

Recent Projects

SEE MORE

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

Improving Rail Emissions Estimation Using Vision-Based Monitoring and Operational Data

Research Team:

Stephen Ritchie (lead), Andre Tok

UC Campus(es):

UC Irvine

Analysis of Large Truck Crashes in California

Research Team:

Stephen Ritchie (lead), Youngeun Bae, Craig Rindt

UC Campus(es):

UC Irvine

Recent Publications

SEE MORE
policy brief

Navigating the Shift: Critical Insights of California Fleet Operators into Zero-Emission Technologies

January 1, 2025

policy brief

What Matters Most to Drayage Companies When Considering a Zero-Emission Truck: Insights from Small and Large Fleet Operators

January 1, 2025

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Small and Large Fleet Perceptions on Zero-emission Trucks and Policies

January 1, 2025

Our Experts

Rezwana Rafiq

Assistant Project Scientist, UC Irvine Institute of Transportation Studies, UC Irvine

Areas of Expertise

Travel Behavior, Land Use, & the Built Environment

Contact

Recent Projects

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Connecting Telework, Travel Behavior, and System Performance During the COVID-19 Pandemic

Research Team:

Michael McNally (lead), Rezwana Rafiq

UC Campus(es):

UC Irvine

Teleworking, Travel, and Quality of Life Before, During, and After the Pandemic Across Different Population Groups in the U.S.

Research Team:

Michael McNally (lead), Rezwana Rafiq

UC Campus(es):

UC Irvine

A Delphi Study of Technology and Policy Implications of RIMI Research on Public Transit and Shared Mobility

Research Team:

Michael McNally (lead), Rezwana Rafiq

UC Campus(es):

UC Irvine

Recent Publications

SEE MORE
policy brief

Transportation System Performance: Should We Redefine Induced Demand?

June 22, 2026

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A Comparison of Time-use for Telecommuters, Potential Telecommuters, and Commuters during the COVID-19 Pandemic

July 1, 2024

Travel Behavior City
Icon for peer review journal article preprint published journal article

Telecommuting and Travel during COVID-19: An Exploratory Analysis across Different Population Geographies in the U.S.A.

April 1, 2023

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