published journal article

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

Publication Date

February 26, 2026

Author(s)

Tamika Butler, Madeline Wander, Madeline Brozen, Evelyn Blumenberg

Abstract

Low-income households commonly lack access to quality and affordable transportation options, impeding their access to opportunities. Low-income households with children face additional challenges. The research draws on data from thirty-nine in-depth interviews to examine the effect of children on the travel behavior and experience of low-income adults. The research finds that low-income households with children experience increased financial and temporal burdens related to travel. These unique and complex challenges result in fewer socioeconomic opportunities and financial resources and reduced time for non-travel activities. The findings underscore the importance of programs and policies to develop a multimodal, affordable transportation safety net.

policy brief

Planning Light- and Heavy-Duty ZEV Infrastructure for a More Resilient Fueling Network in California

Abstract

To meet goals for air quality improvement and greenhouse gas reduction, California aims to expand both light-duty and heavy-duty zero-emission vehicles (ZEVs). To support these aims, the State has set targets for the number of electric charging and hydrogen fueling stations, but deployment is falling short of these targets. For example, there were only 50 hydrogen stations and just over 200,000 chargers as of September 2025, as compared to the goals for this year, set in 2018, of 200 hydrogen stations and 250,000 electric vehicle chargers. Building a large, reliable, equitable network in a short time presents challenges of scale, reliability, and resiliency. One possible way to address these challenges is to combine light-and heavy-duty vehicle charging and fueling infrastructure, given the overlap of these vehicles’ travel patterns and of the respective charging and fueling technologies used. The research investigates how this strategy could support robust charging and refueling networks for projected ZEV growth. To that end, the research also developed a “conservative” and an “optimistic” scenario to simulate charging and hydrogen fueling station deployment across California for 2025, 2035, and 2045.

research report

Autonomous Trucking: Workforce-Safety Dynamics and Policy Implications

Abstract

Autonomous trucks raise complex and interconnected questions about public safety and the future of labor. This white paper examines this safety and workforce connection through a review of multidisciplinary literature and findings from expert interviews to evaluate three automated trucking pathways: driverless trucks, truck platooning, and automated driving assistance systems (ADAS). A central finding is that human autonomy teams will remain integral across all three trajectories. Humans will co-design, test, supervise, and maintain these systems, playing enduring roles in pre-drive, front-line (including in-vehicle), and remote (off-vehicle) settings. These roles represent durable labor categories whose scope, skill requirements, and job quality will be shaped by regulatory design choices that also influence public safety outcomes. This paper finds that partial automation is likely to expand more rapidly than fully driverless operations, creating near-term opportunities to leverage ADAS technologies to improve safety and workforce retention. Investments in retraining and education can help workers transition into emerging roles, while advances in ADAS and ADS safety standards should explicitly address risks to both workers and the public. Greater coordination across government, labor, and industry will also be essential to implement these strategies and ensure that autonomous trucking supports higher-quality jobs and leads to safer, more resilient goods movement systems.

policy brief

Making Workplace Charging Work: What Employees Value in Managed and Bidirectional Programs

Abstract

California’s climate goals increasingly depend on shifting electric vehicle (EV) charging to midday, when clean, low-cost solar energy is most abundant. Doing so could help utilities avoid having to curtail solar energy and prevent reliability-driven infrastructure upgrades that would raise rates for all customers. Workplace charging programs are well positioned to support this shift, as many vehicles remain parked during daylight hours. However, workplace charging presents a cost dilemma. Since home charging is typically less expensive, employees may be reluctant to use workplace chargers unless prices are heavily discounted—yet offering free or low-cost charging extends the time it takes for employers to recoup infrastructure investments.

policy brief

Will California Lose Thousands of Affordable Homes Near Transit?

Abstract

California faces the loss of thousands of affordable rental units in the coming decade as affordability restrictions— known as covenants—expire. These agreements, signed between housing developers and government agencies, typically last 15 to 30 years and require that units be rented at below-market rates. When covenants expire, owners can convert units to market-rate housing, often displacing lower-income families.

In Southern California alone, over 17,000 affordable units are at risk of conversion, and nearly 70% of these units are located near high-quality transit. If the owners of these properties do not enter into new covenants, these units will be placed on the open market, likely leading to the displacement of lower-income residents to the urban outskirts, resulting in longer commutes and reduced access to reliable transit. To better understand the risk of losing affordable units, this brief analyzed historic data on affordable housing conversion and identified key factors that influence whether at-risk properties are preserved or lost.

policy brief

Overcoming Barriers to Transit-Oriented Development: Considering State, Regional, and Local Roles

Publication Date

March 1, 2026

Author(s)

Elisa Barbour, Lev Gordon-Feierabend, Francois Kaeppelin

Abstract

Transit-oriented development (TOD) is a strategy that promotes building housing, shops, offices, and other destinations near public transit stations. TOD is compact and walkable, supports public transit use, reduces car dependency, and can help lower greenhouse gas emissions by decreasing the number of miles people drive. California has adopted many policies in recent years– at the state, regional, and local levels– to encourage TOD as part of its broader climate and housing goals. At the same time, the state faces a housing affordability crisis. In the past seven years, state lawmakers have passed more than 100 bills aimed at increasing housing production, particularly in areas near public transit.

dataset

Mapping High-quality Transit. UCLA Institute of Transportation Studies

Abstract

This code identifies high-quality transit areas (HQTAs) as defined under California state law. In general, HQTAs are within one half mile of a “major transit stop”: a rail, ferry, or bus rapid transit station, or the intersection of frequent bus routes.

The definitions under state law leave much ambiguity. For example, what constitutes an “intersection” of bus routes? Over what period should frequency be calculated? Is the half mile measured from the platform or from the edge of the parcel on which the station sits (including parking lots)? We discuss these ambiguities in a UCLA Institute of Transportation Studies interactive storymap.

The code ingests GTFS files (in .zip format) and outputs polygons of HQTAs under both a restrictive (“minimal”) and expansive (“maximal”) interpretation of these ambiguities. It also ingests supplementary files that give the locations of Amtrak stations, subway station entrances, and more.

website

"Stop" and Think about It: How the Different Interpretations of What Counts as a "Major Transit Stop" in California Make a Difference

other

Technical Appendix: Mapping High-quality Transit

research report

Overcoming Barriers to Transit-Oriented Development: Considering State, Regional, and Local Roles

Publication Date

March 1, 2026

Author(s)

Elisa Barbour, Lev Gordon-Feierabend, Francois Kaeppelin

Abstract

This report considers motivations, obstacles, and policies and programs adopted at the state, regional, and local levels in California to support transit-oriented development (TOD). Regulatory policies adopted by the state in recent years to induce TOD are discussed, as well as state-led and regionally-managed funding programs. Findings are presented from two on-line surveys of local planning directors, and 51 interviews with regional and local planners. The findings point to multiple obstacles to achieving TOD, including market factors, resident opposition, and lack of sufficient funding for implementation, such as for necessary infrastructure to support new development. The most commonly adopted local policies to support TOD include streamlining of environmental review requirements, mixed-use zoning and upzoning (permitting higher densities), improving bike and pedestrian facilities, development of Specific Plans for neighborhoods, and mechanisms to ease accessory dwelling units (ADUs). The survey findings indicate that policies and programs initiated from multiple levels of government are deemed effective for inducing TOD. A recent one-off TOD-supportive funding program that was managed regionally, called the Regional Earley Action Program (REAP), is found to be rated as very valuable both by regional and local planners, leading to the recommendation that this program be instated on an ongoing basis with dedicated funding. The report also concludes that policies deemed effective for inducing TOD, especially funding affordable housing and addressing the nexus of zoning, CEQA streamlining for infill, permit streamlining through ministerial review, and support for Specific Plans, should continue to receive policy support from the state legislature and regional agencies.