Publications

Researchers at UC Davis partnered with Cal-ITP to explore this question: how can California transit agencies modernize fare payment while ensuring transit systems are open and accessible to un-and underbanked riders?

The researchers use a survey of homeowners in Sacramento, California, to investigate the supply and sufficiency of residential parking for single-family homes, including how households actually use their garages, and help answer the ADU parking conundrum.

Researchers at the University of California, Davis and the Technical University of Berlin evaluated questions around the impacts of automated vehicles by simulating three scenarios in the Westside Cities area using an open-source, dynamic, agent-based travel model called MATSim, then calculated the benefits of each scenario compared to the base case for various income groups.

Researchers at the Georgia Institute of Technology created a semi-automated process for developing an all-streets network to be used in TDM applications to more accurately model bicycle travel.

Researchers at the University of California, Davis and the non-profit organization Mobility Development reviewed evaluations of the travel, emissions, and equity effects of past US carsharing programs and analyzed the evolution of carsharing and its various business models.

The objective of this research was to determine the possibilities for and barriers to the provision of battery charging infrastructure for heavy-duty electric trucks at roadside rest areas in California.

This study explores the potential climate change benefits for carsharing services and the need for these services in underserved areas, and discusses the evolution of carsharing in the U.S.

This study examines climate action plans (CAPs) released by jurisdictions in California, and develops a framework to assess their inclusion, which could also be used to guide future CAP development, and develops a set of guiding questions to promote the inclusion of equity themes in climate action planning and implementation.

The researchers use a post-disaster survey and decision tree methods to model agent movements, and explore individual scenarios inspired by the Camp Fire, simulating limited smartphone access, delays in awareness time, and reduced vehicle access. The researchers then combine these to produce “worst case” critical scenarios.

This manuscript contains an assessment of tailpipe emissions and secondary aerosol formation from two in-use heavy-duty diesel vehicles (HDDVs) with different aftertreatment systems when operated with ultra-low sulfur diesel (ULSD) and hydrogenated vegetable oil (HVO) operated on a chassis dynamometer.

Researchers surveyed all 50 state departments of transportation and conducted in-depth interviews with agency experts to understand the implementation status of complete streets asset management, identify what state transportation agencies need to improve their asset management plans, and develop a road map for implementing complete streets asset management.

This report presents creative engagement activities based on the Designing with the Sun: Solar Curriculum Project that teaches high school and undergraduate students the principles of solar design and the steps needed to design and build a solar charging station.

Previous studies focused on determination of brake emission rate from lab testing and so it lacks brake activity of real world conditions. The study aimed to establish a test method to determine brake activity of a heavy-duty vehicle. Brake parameters and vehicle parameters were measured during two chassis cycles and two on-road test tests.

The research team used the Los Angeles MATSim model to evaluate the travel, greenhouse gas(GHGs), and equity impacts of single-and multiple-passenger automated taxi scenarios, including free transit fares and a VMT tax.

This research explores the range of tangible benefits that the implementation of transportation electrification programs can achieve for disadvantaged communities.

This dissertation research demonstrates the importance of assessing BEV charging infrastructure in an integrated perspective, focusing on key interactions between transportation, energy, and economy across individual patterns of travel behavior, dwelling constraints, pricing elasticity of consumers with regards to charging, and the temporal and spatial diversity in price and GHG intensity of electricity through three studies.

The goal of this dissertation is to analyze applications through the lens of circular economy in California based on life cycle assessment (LCA) and techno-economic analysis (TEA).

UC Davis researchers adapted a previously developed GIS planning toolbox to be used outside of California, collaborating with the Delaware Valley Regional Planning Commission to develop a case study for using this toolbox for EV infrastructure planning in the Greater Philadelphia region.

Researchers at UC Davis used the publicly available 2012 CHTS and 2017 NHTS California add-on data to examine the impact of methodological differences on the changes in mode shares over this five-year period and conducted a preliminary investigation into the role of demographic and other factors in these changes.

Concrete is also responsible for over 8% of annual anthropogenic greenhouse gas (GHG) emissions globally. As population and urbanization increase and existing infrastructure deteriorates, demand for production of concrete will increase, and with it, the environmental burdens from its production. The models used to determine environmental impacts of producing concrete have considerable uncertainty and variability. This makes it challenging to identify the most effective means of mitigating these burdens.