research report

Answers from the Margins: Participatory Planning with Disadvantaged Communities

Abstract

The public mandate to engage the public in transportation planning processes is in the process of becoming more rigorous and democratic. Transportation agencies are recognizing the limitations of past modes of engagement and seek to connect more dynamically with the public, particularly with historically marginalized communities. Doing this work well is a topic of interest to a growing number of transportation professionals. This study identified four successful engagement processes with historically marginalized communities in California by surveying transportation professionals. Stakeholders at each site were interviewed and public documents from the processes were reviewed to identify common themes for positive public inclusion. Interviewees included community leaders, transportation staff, and consultants. Interviews were coded and analysis was conducted using a mobility justice and critical race studies framework. Ten key themes of successful community engagement with historically marginalized communities were identified. These themes are: (1) trust is crucial; (2) treat community-based organizations as equal partners; (3) pay community partners fairly; (3) let community-based organizations decide what good community engagement is; (5) translate technical jargon; (6) engage in community concerns beyond the scope of the project; (7) address major community concerns such as displacement, policing, and youth development; (8) know local histories of transportation injustice; (9) include the community in the final reporting process; and (10) follow-up on planning with implementation in a timely manner.

research report

Hydrogen Infrastructure Requirements for Zero-Emission Freight Applications in California

Abstract

Zero-emission vehicles are seen as key technologies for reducing freight-related air pollution and greenhouse gas emissions. California’s 2016 Sustainable Freight Action Plan established a target of 100,000 zero-emission freight vehicles utilizing renewable fuels by 2030. Hydrogen fuel cell vehicles are a promising zero-emission technology, especially for applications where batteries might be difficult to implement, such as heavy-duty trucks, rail, shipping, and aviation. However, California’s current hydrogen infrastructure is sparse, with about 25 stations, primarily sited to serve fuel cell passenger vehicles and buses. New infrastructure strategies will be critical for implementing hydrogen freight applications. The researchers analyzed hydrogen infrastructure requirements, focusing on hydrogen fuel cells in freight applications, using a California-specific EXCEL-based scenario model developed under the Sustainable Transportation Energy Pathways program (STEPS) at the Institute of Transportation Studies at UC Davis (Miller et al, 2017). Hydrogen vehicle adoption and demand was estimated for trucks, rail, shipping, and aviation, for a range of scenarios out to 2050.

op-ed

Electrifying Transportation May Be Harder Than We Think

blog

Electric Vehicle Owners Drive Less Than We Thought

policy brief

Best Practices for Pavement: Pavement Condition Index

policy brief

California Can Simplify the Housing Element Law to Reduce Administrative Burdens and Improve Social Equity

Abstract

California’s Housing Element law requires all local governments to adequately plan to meet the state’s existing and future housing needs. The law establishes processes for determining regional housing needs and requires regional councils of governments (COGs) with allocating these housing needs to cities and counties in the form of numerical targets. Local governments must update the housing element of their general plans and adopt policies to accommodate the housing targets. The California Department of Housing and Community Development (HCD) reviews all local housing elements and determines whether the elements comply with state law.

policy brief

Can Plug-in Electric Vehicles in a Smart Grid Improve Resiliency?

Abstract

While the impact of plug-in electric vehicles (PEVs) on electricity generation and transmission has been studied extensively, the impact of PEVs on the resiliency of the local electricity distribution system has not been addressed in detail. Understanding resiliency impacts is important as the increased use of PEVs, and especially the clustering of PEVs in one area (such as a neighborhood), place additional pressures on already aging power grid infrastructure. As an example, charging a large population of PEVs during normal operations can stress system components (such as transformers) resulting in accelerated aging or even failure, which reduces resiliency of the system. On the other hand, PEVs can also increase system resiliency. When connected to the grid, PEVs are an energy resource that can provide electricity for critical services (such as community shelters) during grid outages and facilitate grid restoration by providing electricity to support the restart of transformers and other utility assets.

research report

Accessibility, Affordability, and the Allocation of Housing Targets to California’s Local Governments

Abstract

California’s Housing Element law establishes processes for determining regional housing needs and allocating these housing needs to cities and counties in the form of numerical targets. This study assesses whether the state’s housing allocation process achieves the state’s goals of promoting housing development in areas accessible to transit, jobs, and socioeconomic opportunities. The first analysis compares the mechanism that the Southern California Association of Governments (SCAG) uses to allocate housing units to local governments with two simpler alternatives. For all three allocation mechanisms, the research team assesses whether the resulting allocations align with the goal of promoting housing development in areas with high social mobility and near transit and jobs. The team finds that the Southern California Association of Governments’ allocation method may be unnecessarily complex and that simpler allocation methods – which are less susceptible to technical difficulties and political wrangling – could achieve the state’s policy objectives with less administrative burden. The second analysis, based on case studies of two Southern California cities, provides preliminary evidence that current enforcement mechanisms adopted in California may be insufficient to ensure that local governments accommodate their housing targets and promote housing development near transit and job centers.

research report

Early Results from an Electric Vehicle Carsharing Service in Rural Disadvantaged Communities in the San Joaquin Valley

Abstract

In rural areas, cost-effective transit service is challenging to provide due to greater travel distances, lower population densities, and longer travel times than in cities. The people who rely on public transit contend with infrequent and slow service. Access to a personal car is often essential to the quality of life for most residents, enabling them to more easily access work, health care, education, healthy food, and other essential services. However, keeping two (or sometimes even one) cars in reliable working order can consume an estimated 22% to 56% of the household budget for low-income families in California. Rural residents often have lower incomes than their urban counterparts, and the most fuel-efficient vehicles, particularly electric vehicles (EVs), are often outside their financial reach. An EV carsharing pilot, called Míocar, was launched in August 2019 to explore the potential of a shared mobility service to offer a cost-effective mobility option for residents of rural disadvantaged communities and to help reduce greenhouse gas emissions. Affordable housing complexes host the round-trip EV carsharing hubs in southern San Joaquin Valley (CA) communities with low levels of intercity transit service and personal vehicles. The goals of the pilot program are (a) to provide carsharing at a price point that is more affordable than owning a personal vehicle to price-sensitive populations with low transit access, and (b) to help reduce greenhouse gas emissions. This report summarizes the data collected during the 10-month operational ramp-up of the Míocar service—the entire dataset links members and their service use data with results from member and post-reservation surveys. The results provide initial insights into who, how, and why members are using Míocar.

research report

The Induced Travel Calculator and Its Applications

Abstract

The National Center for Sustainable Transportation’s Induced Travel Calculator (Calculator) has generated substantial interest in the professional community as a method for estimating the additional vehicle miles traveled (VMT) induced by expanding the capacity of major roadways. The Institute of Transportation Studies at the University of California, Davis (ITS-Davis) initiated a technical assistance project to support Caltrans and others in applying the Calculator. This report: (1) provides an overview of the Calculator and the induced vehicle travel effect, (2) summarizes the results from an earlier study comparing the Calculator’s estimates with other induced travel analyses, (3) describes the technical assistance efforts and outcomes, and (4) discusses plans for future improvements to the Calculator. During the project, ITS-Davis advised Caltrans as it developed its Transportation Analysis Framework to guide transportation impact analysis for projects on the State Highway System. Caltrans published the final document in September 2020, in which it recommends that the Calculator be used where possible to estimate induced VMT. ITS-Davis also advised on efforts to apply the Calculator’s elasticity-based method to estimate induced VMT from out-of-state highway capacity expansion projects, including projects in Portland, Oregon, Washington, D.C., Kenya, and China. In a follow-up project, ITS-Davis will work with Caltrans to improve the Calculator documentation to answer questions raised by Caltrans and others, explore possible technical improvements to the Calculator, and explore opportunities for assessing the validity of the Calculator’s induced VMT estimates.