The Global Potential for Walking and Cycling
We examine the potential for walking and cycling to expand at the worldwide scale, and quantify the climate and health benefits. Working with Google, we leverage Environmental Insights Explorer data [...]
Further Implications of Freeway Siting in California: An Equity, Geospatial, and Case Study Approach
This project examines the consequences of freeway construction on neighborhoods of color across California: South Colton, West Fresno, and City Heights in San Diego. The construction of freeways was a [...]
Transportation Needs for Wildfire Recovery and Resilience for Vulnerable Communities
While much attention in the literature has focused on wildfire evacuation disparities tied to transportation and communications infrastructure and policy needs, limited focus has been on the transportation- and infrastructure-related [...]
Assessing Procedural Equity in California’s Electric Vehicle Purchase Programs
California’s goal of transitioning all vehicles sold in the state to zero-emission models by 2035 is pivotal to address climate change and advance environmental justice. However, achieving this transition equitably [...]
The Equity, Environmental, and Policy Implications of Long-Distance Commuting in California
This study examined the equity implications of supercommuting in California, with a focus on the Los Angeles region (comprised of Imperial, Los Angeles, Orange, Riverside, San Bernardino, and Ventura counties). [...]
Understanding Preferences for Transportation Infrastructure Investment: A Case Study of California’s High-Speed Rail Project
This project uses the California High Speed Rail (CHSR) project as a case study for analyzing the relative importance of economic versus political/ideological factors in shaping preferences for large transportation [...]
Historic Report on the SR-710 Displacement
This study documents the historical and current patterns of racial/ethnic residential segregation in Pasadena, examining the role of freeways and other mechanisms in shaping these outcomes. Pasadena and the wider [...]
Truck Travel and Land Use Change: Examining The Implications of Highway Infrastructure for Air Quality and Environmental Justice
What is the relationship between transportation infrastructure investments, particularly highway expansions, warehouse development, freight travel, and air quality? This project analyzes three case study communities to answer these questions.
Transportation and Urban Wildfire Evacuation – Lessons from the 2025 Los Angeles Wildfires
Communities in wildland urban interface areas face elevated risk of wildfire exposure. The existing fire evacuation literature has examined whether, when, and how to evacuate as well as behavioral variability [...]
State Preemption and Parking Requirements
We consider how cities are responding to California's legislation that preempts them from requiring parking close to transit. To what extent are cities sticking to the letter of the law? [...]