Publications

This report presents the views expressed by UC Davis commuters related to various issues, challenges, and concerns that they have with the transportation facilities and services in the community in an open-ended question on the 2022-23 UC Davis Campus Travel Survey. 

This report discusses some of the key results from the UC Davis Campus Travel Survey on questions related to physical travel to campus and reasons for no travel to campus before and after COVID-19 pandemic.

This report presents some of the key results from the two new blocks of questions included in the 2022-23 UC Davis Campus Travel Survey, to assess the safety of pedestrians, bicyclists, and other micro-mobility users, and about incidents related to bike theft and vandalism on campus. 

This research developed EV Explorer 2.0, an online vehicle cost calculator (VCC) to meet the requirements of transportation network company (TNC) drivers considering acquiring an electric vehicle (EV).

The 2022-23 survey collected data from 3,228 people affiliated with UC Davis about their travel to campus.

This project studies four slow street programs in the U.S.—in Los Angeles, Portland, Oakland, and San Francisco—to study the impact of slow streets on non-motorized travel. Dockless scooter travel is used for the empirical analysis.

This study investigates how the COVID-19 pandemic has transformed people’s activity-travel patterns, using datasets collected through three waves of surveys in spring 2020, fall 2020, and summer 2021. In general, the pandemic has generated a mix of short-lived temporary changes and potential longer-term impacts. The study provides various strategies to help increase transportation and social equity among various population groups as the communities recover from the pandemic.

This project focuses on the LOS to VMT shift as a transportation impact metric for land development projects under the California Environmental Quality Act (CEQA). The authors expand on the differences this shift has posed upon land development projects, and explore the government's involvement in measuring the actual VMT levels.

This report studies the responses given by PEV lessees and purchasers to the question of what they would do in the absence of the federal tax credit. To analyze the indications made by the responses, researchers sampled 7,000 California PEV drivers and used two logistic regression models and specified them.

This research studies the potential of bikeshare services to bridge the gap between Affordable Housing Communities (AHC) and transit services to improve transport accessibility of the residents. In doing so, the study develops an agent-based simulation optimization modeling (ABM) framework for the optimal design of the bikesharing station network considering improving accessibility as the objective.

This study differentiates between HEV, PHEV, and BEV users across three factors: owner household socio-demographic attributes, household daily travel patterns, and household energy usage profiles.

This research evaluates the potential effectiveness of a select “Smart Pedal” system for improving fuel economy and reducing GHG emissions in the Caltrans vehicle fleet.

This study explores how has EV adoption increased over the past years and predicts how will the EV market continue to expand and penetrate in the future years using a case study with regional granular travel survey data.

This research assesses whether the development of reduced-cobalt energy dense cathode chemistry and the use of columnar silicon thin film anode will change the currently understood waste hierarchy of lithium-ion batteries, which prioritizes reuse or repurposing prior to recycling. The assessment considers the life cycle environmental impacts of two end-of-life management routes for a high-cobalt LIB: first, recycling the battery immediately after the first use life to produce a new, and less material intensive battery, and second, repurposing the battery for a stationary storage application followed by recycling.

In this study, the researchers examine the rate of bike-share adoption by individuals from different socio-demographic groups and living in different bicycling contexts.

The goal of the 2023 Atlanta Metropolitan Area Northwest Corridor Commuter Survey is to gather information from metropolitan area residents about changes in their commute travel to work on the I-75 Northwest Corridor (NWC) over time. The survey looks at commute travel before and after the NWC Express Lanes opened, during the height of the COVID-19 pandemic, and finally at anticipated changes after the pandemic is behind us.

This report presents preliminary findings from the American Micromobility Panel, the largest study of shared micromobility services in the United States incorporating riders from multiple major operators.

This study investigates the opportunities and challenges associated with alternate last-mile distribution strategies for an e-retailer offering expedited service with rush delivery within strict timeframes. The authors formulated a last-mile network design (LMND) problem as a dynamic-stochastic two-echelon capacitated location routing problem with time-windows (DS-2E-C-LRP-TW) addressed with an adaptive large neighborhood search (ALNS) metaheuristic.

Reliable, lane-level, absolute position determination for connected and automated vehicles (CAV’s) is near at hand due to advances in sensor and computing technology. This project investigated, analyzed, and demonstrated these related technologies.

In this project, the authors developed a centrally coordinated shuttle scheduling and routing management system for mixed fleets of diesel and electric shuttles using a digital twin of LAX to LA downtown traffic road network by optimizing the total combined cost of energy consumption and travel time.