research report

After the Crash: Post-Collision Travel Behavior and Safety Perceptions

Publication Date

March 1, 2025

Author(s)

Md. Musfiqur Rahman Bhuiya, Jesus M. Barajas, Prashanth Venkataram

Abstract

Post-collision travel behavior and effects on road safety perception are not well-understood. To quantify the ways that crash-related experiences shape the way individuals think about travel, we conducted four focus group discussions with people who had been involved in a crash or near miss or whose relatives or friends experienced one. Several themes emerged from the discussions. Participants changed their travel behavior after experiencing a collision by modifying their travel mode, travel frequency, trip purposes, or vehicle types. Participants developed an enhanced awareness about potentially unsafe behaviors of other road users and road environments and adopted more cautious attitudes toward their own travel. Many participants experienced long-term stress as a result of the incidents, including fear, behavior modification, or travel avoidance. Participants offered several recommendations, including the need for safer infrastructure, improved road user visibility, a shift in media narratives, educational programs, and policy changes focused on land use and transportation synergies.

policy brief

Americans are Spending More Time at Home and Traveling Less Post-Pandemic

Publication Date

March 1, 2025

Author(s)

Samuel Speroni, Brian D. Taylor

Abstract

The COVID-19 pandemic accelerated an ongoing trend of Americans spending more time at home and less time engaged in activities away from home. This shift in travel behavior has significant implications for cities, transportation systems, economics, and even mental health. To better understand this trend, this research project examined how people in the U.S. spend their time pre-pandemic, mid-pandemic, and post-pandemic using data from the American Time Use Survey, with a focus on work, leisure, and travel behavior.

policy brief

How Are Low-Income Older Adults Traveling, and What Barriers Do They Face? A Case Study from San Diego

Abstract

Sixteen percent of adults aged 62 and over in California live in poverty. Older adults also make up a large share of the state’s homeless population, primarily because low-income seniors on fixed incomes are being priced out of housing. These trends are especially concerning as California’s population continues to age. Understanding how housing affordability and access to transportation affect older adults is vital to supporting healthy aging.

The research team surveyed the transportation needs and behaviors of 89 senior affordable housing residents at six sites in San Diego County. These sites varied by county region, public transit proximity, and neighborhood density. Of these respondents, 54 had experienced homelessness and 16 managed chronic health conditions; nearly all were considered very or extremely low-income based on area median income. The research focused on travel for social events and errands since almost none of the respondents worked or attended school.

op-ed

America is becoming a nation of homebodies

Publication Date

March 10, 2025

Author(s)

Brian D. Taylor, Samuel Speroni

Abstract

The COVID-19 pandemic did spur more Americans to stay home. But this trend didn’t start or end with the pandemic. Research found that Americans were already spending more and more time at home and less and less time engaged in activities away from home stretching all the way back to at least 2003.

policy brief

New Insights from Satellite Data Show the Impact Trucks are Having on Communities in Southern California

Abstract

The rapid growth in freight transportation, particularly heavy-duty trucks, poses significant environmental and public health challenges for communities near major ports and freeways. In areas such as those near the Port of Los Angeles and the I-710 corridor, communities are exposed to elevated levels of air pollution, noise pollution, and associated health risks. Traditional traffic data collection methods primarily concentrate on gathering traffic volume data for freeway segments or smaller areas, often overlooking heavy-duty vehicles across roadway networks and in local communities.

To better understand the environmental impact and spatial distribution of heavy-duty truck traffic, this research employed a deep learning approach to analyze satellite imagery and publicly accessible spatial data. This approach allowed identification and categorization of heavy-duty trucks and shipping containers along critical freight routes and analysis of impacts on adjacent communities.

policy brief

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

Abstract

Personal safety is a critical issue for transit riders, particularly for women and gender minorities. Safety concerns can stem from experiences of sexual harassment that those who identify as women frequently face. However, most incidents go unreported, leaving transit agencies without information about the magnitude of the problem.

UCLA graduate student researchers worked with the San Francisco Municipal Transportation Agency (SFMTA) staff to conduct and analyze a survey on their transit system (Muni) of riders’ experiences with harassment, feelings of safety, and potential policy responses. This effort collected 1,613 responses over a two-week period in February and March 2023 through a partnership with the Transit App, a downloadable service for real-time schedule and location tracking of buses and trains. Similar to previous studies, harassment was common: two-thirds of respondents experienced harassment themselves, and around the same share witnessed it. Safety perceptions declined after dark, with less than a third of respondents feeling safe riding at night. Women and gender minorities experienced greater harassment and lower feelings of safety than their male counterparts. People of color, younger people, and people with disabilities also experienced harassment at higher rates.

Several valuable lessons were learned from the process of developing the survey, fielding it, analyzing its results, and turning those results into policy responses, which can assist other transit agencies to address issues of transit safety and harassment on their systems.

white paper

Strategies for Improving Community College Access in California

Publication Date

February 1, 2025

Author(s)

Susan Shaheen, Jaquelyn Broader, Adam Cohen, "Brooke (Schmidt) Wolfe "

Abstract

In California, transportation plays a key role in community college access because many community college districts have satellite campuses, have limited transportation options, and tend to not have on-campus housing. To better understand the mobility challenges students face accessing community colleges and provide potential policy strategies to overcome these challenges, the researchers interviewed local transportation agencies, community college administrators, and students at five California community colleges between September 2022 and October 2023. Participants were asked about available transportation options for community college students, typical student travel patterns, and the resources needed to support improved community college transportation access. Small group discussions with students focused on student travel patterns, mobility challenges, and opinions on potential strategies to improve access. In addition, state legislation on student transportation was reviewed to understand current and past policy attempts to address community college transportation challenges. Together, the findings inform a set of policy options, such as student transit passes, public transit enhancements aimed at meeting the needs of students, and transportation pilot programs.

research report

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

Abstract

The COVID-19 pandemic forced transit agencies to quickly adapt to new challenges, with service reductions as part of the response to reduced ridership, rising fiscal pressures, and staffing shortages. However, approaches to service adjustment varied significantly across agencies. While pandemic research often focuses on ridership impacts, less attention has been given to how transit service changes affected accessibility and equity. This study examines the impacts of pandemic service adjustments made by three major San Francisco Bay Area transit agencies on accessibility and equity, which is important to address given the absence of formal requirements for equity evaluation of temporary service changes. Using publicly available transit schedule and census data, metrics for transit service levels, job accessibility, and accessibility inequality were developed and used to trace changes from 2020 to 2023. The findings reveal distinct approaches to service reduction and restoration, with agencies prioritizing service differently based on travel needs and racial/ethnic minority populations. While equity briefly improved for some agencies during the pandemic, these changes were temporary, with all agencies returning to their pre-pandemic states of inequity. These insights can guide transit agencies in developing equitable service adjustment strategies and highlight the need for decision-making tools to help transit operators balance competing needs and respond flexibly to disruptions.

research report

Understanding Demand, Revenues, and Costs of Electric Carsharing in Underserved Rural and Suburban Areas

Abstract

Transportation access is a significant issue in low-income, rural, and otherwise underserved communities in the US, with few affordable and reliable alternatives to car ownership. Carsharing is one promising alternative to improve access among marginalized communities. Grant programs in California have funded pilot electric carshare services. But little is known about the long-term financial sustainability of these services and how their costs and revenues compare those of transit. In this study, a financial model was used to estimate the net operating income (fare revenue minus costs) for Míocar, an electric carsharing service in marginalized suburban and rural communities. The estimated net operating income per month was −$1561, under current operating conditions, and ranged from −$1255 to −$1623 depending on simulated changes to fleet size, pricing, and usage rates. These negative net operating incomes correspond to a shortfall (or need for subsidies) of 68% to 92% of operational costs. Míocar could achieve a higher ratio of fare revenues to operational costs (13%) than existing transit (3 to 8%). To minimize required subsidies, electric carshare operators and prospective carshare communities should carefully consider hub locations (which can affect usage rates), the number of vehicles per hub, and the expected demand over time.

policy brief

Fares Alone Will Not Sustain the Long-Term Operations of Electric Vehicle Carsharing Programs in Underserved Communities

Abstract

Access to affordable and reliable transportation options is a significant issue in low-income, rural, and otherwise underserved communities across the United States. Carsharing is one promising option for households that are unable to afford a personal vehicle or have unreliable or insufficient access to a personal vehicle. California has developed multiple grant programs funding shared mobility start-ups (such as carsharing) in underserved communities. This funding is particularly beneficial in areas where private, for-profit carshare companies won’t or can’t operate.