published journal article

Moving, mapping, imagining: Youth-centered methods for analyzing and envisioning mobility futures

Abstract

Adolescents hold extensive knowledge about their independent travel experiences and aspirations, yet mobility research rarely elevates the voices and visions of youth. This article explores the potential of mobile, map-based, and projective methods to enhance understanding of youth mobility needs and to inform supportive, place-responsive public realm interventions. Based on a participatory research project involving thirty-nine adolescents aged eleven to fifteen in a dense Los Angeles neighborhood, this research demonstrates how moving, mapping, and imagining in collaboration with youth participants can advance justice in both planning processes and in public spaces that support young people’s mobility and urban agency.

policy brief

Electric Vehicles Could Reduce Costs for Low-Income Drivers if Structural Barriers are Addressed

Abstract

Battery-electric vehicles (BEVs) are central to California’s strategy to reduce transportation-related emissions; however, low-income households face significant structural barriers to adoption. These barriers include the high upfront purchase costs of new BEVs, limited supply of used BEVs, limited access to home charging, and low awareness of BEVs. To better understand these obstacles and identify effective policy responses, the research team analyzed survey data collected from 2,051 priority population households throughout California between December 2023 and June 2024. The survey asked households about their vehicle purchasing behavior, ownership costs, and socio-demographics.

policy brief

Evaluating Transportation Equity Data Dashboards

Publication Date

June 1, 2025

Author(s)

Claire McGinnis, Jesus M. Barajas

Abstract

The historical impacts of transportation planning and investment have adversely impacted communities of color and low-income communities. In response, state departments of transportation, metropolitan planning organizations, and local and county governments have begun to address these injustices through plans, policies, and deeper engagement with communities, though work in this area is still nascent. There are a variety of data, tools, and metrics from research and practice that measure the distributional equity of transportation planning and projects to inform equitable solutions.

published journal article

Crabgrass confinement: Housing and transportation challenges of low- and moderate-income suburban residents in the San Francisco Bay Area

Abstract

The relationship between housing and transportation costs has been the focus of much research, with classic urban theory positing that housing costs decrease and commuting costs increase as households move away from city centers. The growing population of low and low-moderate (LMI) households in suburbs may be taking advantage of lower housing costs, though research shows that housing cost savings in suburbs are offset by higher transportation costs. Our research explores dimensions of housing and transportation cost burden on LMI households in Contra Costa County in the San Francisco Bay Area using qualitative data from online/in-person surveys (n = 208) and interviews conducted in English and Spanish (n = 25).

We found that the housing burden is high, suggesting that LMI households choose to live in the suburbs for diverse reasons, including rising rents and other requirements (e.g., credit score, rental history) in core cities, and desire for home ownership and a safer environment for children. Yet LMI suburban residents are still vulnerable to rising rents and housing instability in suburban areas. In addition to high housing costs, transportation costs are higher in suburbs due to longer commutes and higher reliance on personal vehicles. Car access is necessary, especially for households with young children. Reliance on cars becomes an issue as LMI households often encounter maintenance issues with used cars or the inability to make car payments. When faced with a lack of car ownership, households rely on social networks or public transit, and in some cases, forgo trips or relinquish their vehicles entirely. The lack of quality transportation alternatives in suburban contexts, as existing public transit services, have long headways and are not well-suited to serving off-peak trips between suburban areas, leaves LMI households vulnerable.

research report

Stockton’s Crosstown Freeway, Urban Renewal, and Asian Americans: Systemic Causes and Impacts

Abstract

This project uses mixed methods to examine the systemic causes and consequences of the construction of Stockton, California’s Crosstown Freeway, and urban redevelopment for Asian American communities. Stockton underwent spatial restructuring in the decades after the Second World War, and state and local governments contributed and responded to these changes by implementing connected freeway and urban renewal programs. Historical and contemporaneous xenophobia and racism placed Chinatown, Japantown, and Little Manila in their path, with these enclaves deemed blighted and subject to “slum clearance.” The choice of freeway route was racially biased. The neighborhood surrounding an unchosen route was predominantly white, whereas that of the chosen route was predominantly home to people of color. Freeway construction during the 1960s and 1970s directly displaced hundreds of people and housing units downtown— mainly people of color, particularly Asians. The communities most harmed were the Asian American enclaves, where the housing stock declined by about three-quarters between 1960 and 1970. The losses were not only physical, as the freeway and redevelopment eviscerated once vibrant ethnic commercial hubs. Because of long-standing economic and political marginalization, Asian Americans were relatively powerless to prevent the destruction; nonetheless, they fought to build affordable housing for their people, protect and in some cases relocate cultural institutions, and support surviving ethnic businesses. In the long run, Stockton failed to revitalize its downtown, while destroying its cultural diversity. The findings can help reform and improve professional practice within the transportation arena to ensure racial fairness and equity.

op-ed

How California can use electric vehicles to solve its blackouts

blog

Transit Ridership at Bay: Reflections on the UCLA ITS Bay Area Transit Use Study

published journal article

The Road, Home: Challenges of and Responses to Homelessness in State Transportation Environments

Abstract

In recent decades, homelessness has become an increasingly major challenge in the U.S., reaching about half a million unhoused people. Many of them seek shelter in settings such as freeways, underpasses, and rest areas. State departments of transportation (DOTs) are responsible for the health and safety of these settings and their occupants, housed and unhoused. This study synthesizes existing literature and findings from interviews with staff from 13 state DOTs and eight service providers and organizations responding to homelessness. Homelessness represents a recognized and common challenge for DOTs, which face jurisdictional, financial, and legal hurdles in addressing it. DOT staff employ both “push” and “pull” strategies, the most common of which is encampment removals (“sweeps”). However, the effectiveness of such removals is limited, as encampments often reappear in nearby sites. Other strategies include “defensive design” and, more proactively, establishing or partnering with low-barrier shelters, providing shelters and sanitation on DOT land, and coordinating rehousing and outreach efforts. Our findings suggest that DOTs should acquire better data on homelessness on their lands, create a homelessness coordinating office, establish formal partnerships with nonprofits/service providers, and evaluate the necessity of encampment removals, through the development and utilization of prioritization criteria.

published journal article

Transit’s Financial Prognosis: Findings from a Survey of U.S. Transit Systems during the COVID-19 Pandemic

Abstract

The COVID-19 pandemic occasioned significant financial distress and uncertainty for many U.S. transit operators. In the face of this crisis, the federal government provided substantial supplemental operating support. To understand how this fiscal turmoil and relief have affected U.S. transit systems, we conducted two nationwide surveys of transit agency staff in 2020 and 2021-2022. While pandemic-induced financial shortfalls affected service in 2020, with capital projects delayed too, these effects became much more muted by 2021/2022. Most systems reported moderate to substantial increases in federal funding during the pandemic, more so than other funding categories. However, nearly half foresee financial shortfalls once federal relief funding expires. Agencies with higher pre-pandemic ridership and farebox recovery are particularly affected by fare revenue losses and are more likely to anticipate shortfalls. In the near term, difficulty hiring and retaining front-line workers was a pressing concern, while very few had plans to maintain pandemic fare suspensions.