Transportation Commons^™

Charging Infrastructure Needs For Electric Trucks In Texas, Katerina Jilkova

Open Access Theses & Dissertations

This thesis focuses on the design of a methodology for determining the optimal location of charging stations for heavy-duty electric trucks. The work focuses primarily on long-distance trips that require charging the truck battery outside cities, where the range of charging stations is not extensive. In addition to design the algorithm, the thesis also focuses on implementing the algorithm on a specific case - the implementation of charging stations in the I-10 Freeway corridor between El Paso and San Antonio. The output of the work is not only a description of the procedure, but also an application to a real …

Understanding And Modeling Pooled Rideshare Acceptance: Influential Factors, Preferred User Experiences, And Implications, Rakesh Gangadharaiah

All Dissertations

This dissertation explores factors influencing pooled rideshare (PR) adoption to provide actionable insights for transportation network companies (TNCs) and policymakers. PR allows travelers to share rides with unknown passengers, offering benefits such as cost reduction and congestion relief. However, adoption remains limited due to safety concerns, privacy issues, and trust in rideshare platforms. A national U.S. survey with 5,385 respondents examined transportation preferences and barriers to PR adoption. Exploratory and confirmatory factor analyses identified five key factors influencing PR consideration—safety, service experience, privacy, traffic/environment, and time/cost. Second factor analyses examined ways to optimize PR experiences, revealing four factors—comfort/ease of use, …

Barriers Individuals And Families Experience Utilizing Anti-Poverty Programs, Miranda C. Dube'

Electronic Theses, Projects, and Dissertations

This proposed study aims to explore the barriers experienced by residents of the High Desert communities. Using a quantitative method approach, the proposed research will employ surveys to provide a comprehensive understanding of the outcomes experienced by the High Desert residents. Participants will be selected within the High Desert communities, aged 18 years or older, who have or are currently experiencing poverty. The findings from this proposed study would contribute to bridging gaps in understanding the barriers residents of the High Desert experience. By identifying factors that suppress successfully utilizing anti-poverty programs, this research proposal would aim to inform the …

Mash Crashworthiness Of Work Zone Devices And Breakaway Luminaire Poles, Mohammadreza Rajaee

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

This thesis presents a study on the crashworthiness of two commonly-used roadside safety devices: Type II barricades and luminaire poles supported by TB1-17 transformer bases. The first part focuses on designing and evaluating a non-proprietary, Type II barricade that meets MASH criteria. A validated LS-DYNA model, based on a previously-tested Type III barricade, was used to guide the design. The proposed Type II system was evaluated through simulation and confirmed with full-scale crash testing. The second part of the study investigates luminaire poles supported by the TB1-17 transformer base. A previously-developed LS-DYNA model was updated and validated using test No. …

Development Of Timber Bridge Railing And Approach Guardrail Transition, Aaron Lechtenberger

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

Timber bridges with transverse and longitudinal bridge decks are increasingly utilized across the United States. However, limited research exists to develop bridge railing systems for high-service-level roadways that meet current vehicular impact safety standards. In response to this gap, the United States Department of Agriculture - Forest Service -Forest Products Laboratory (USDA-FS-FPL), in collaboration with the Midwest Roadside Safety Facility (MwRSF), initiated a research program to develop, crash test, and evaluate higher-service-level bridge railings and approach guardrail transitions (AGTs) compliant with the American Association of State Highway and Transportation Officials (AASHTO) Manual for Assessing Safety Hardware (MASH).

This study continued …

Assessing Perceived Safety Of Non Motorized Travel With Virtual Reality, Vahid Balali, Sahand Fathi

Mineta Transportation Institute

Cycling is increasingly advocated as a healthier and more sustainable mode of transportation, as reflected in both scholarly literature and policy initiatives. Nonetheless, the escalation in bicyclist crash fatalities underscores deficiencies in extant roadway designs that inadequately safeguard these vulnerable users. A persistent challenge in the examination of bicyclist safety, behavior, and comfort is the paucity of comprehensive cycling data. To enhance understanding of cyclists' behavioral and physiological responses safely and efficiently, this investigation utilizes a bicycle simulator within an immersive virtual environment (IVE). Off-the-shelf sensors are employed to evaluate cyclists' performance metrics (speed and lane position) and physiological responses …

A Comprehensive Study Of Impacts Of “Q” Bus Rapid Transit System On Blackstone Avenue, Yertai Tanai, Kamil Ciftci

Mineta Transportation Institute

This study examines the dual impact of the Fresno Area Express (FAX) Q Line, a 15.7-mile Bus Rapid Transit (BRT) system launched in 2018, on the Fresno housing market and passenger satisfaction. The Q Line, designed to modernize public transit, features eco-friendly compressed natural gas (CNG) vehicles, real-time passenger information, and improved service efficiency. Housing market analysis focused on residential properties sold between 2012 and 2024, utilizing Geographic Information System(GIS) mapping to segment properties into three regions: the Q Line corridor, an outer buffer zone, and the rest of Fresno. Results indicate no statistically significant increase in property values within …

The Effects Of The Covid-19 Pandemic On Transit In The San Francisco Bay Area, Richard W. Lee, David B. Reinke, Christopher E. Ferrell, Charles Rivasplata, John M. Eells, Luana Chen

Mineta Transportation Institute

This report presents the findings from our study for the California State Assembly Transportation Committee on the effects of the COVID-19 pandemic on Bay Area Transit. The study consisted of a review of the literature on the effects of the pandemic on transit in the US, a detailed look at changes in ridership and economics for Bay Area transit agencies, comparisons of Bay Area transit ridership changes to those in similar US metropolitan areas, and analysis of possible remedies to restore the financial health of Bay Area transit agencies. Bay Area transit ridership has recovered somewhat from the depths of …

Does The Transit Industry Understand The Risks Of Cybersecurity And Are The Risks Being Appropriately Prioritized?, Scott F. Belcher, Terri Belcher, James Grimes, Lusa Holmstrom, Andy Souders

Mineta Transportation Institute

The intent of this study is to assess the readiness, resourcing, and capabilities of public transit agencies to detect, identify, be protected from, respond to, and recover from cybersecurity vulnerabilities and threats. This study is an update of the 2020 Mineta Transportation Institute (MTI) study, “Is the Transit Industry Prepared for the Cyber Revolution? Policy Recommendations to Enhance Surface Transit Cyber Preparedness.” In the previous study, the authors found that the transit industry was ill-prepared for cybersecurity attacks. Unfortunately, after four years and the development of new, and often free, resources, the situation has not markedly improved. In fact, this …

A Numerical Analysis Tool To Evaluate Pavements Integrated With Dynamic Wireless Power Transfer Technology, Hector Cruz

Open Access Theses & Dissertations

As electric vehicles (EVs) continue to gain market share in the U.S., the integration of dynamic wireless power transfer (DWPT) systems into pavements has emerged as a promising solution to address range anxiety and infrastructure limitations. However, the structural implications of embedding DWPT technology into roadways remain insufficiently explored. This dissertation presents the development and application of a numerical analysis tool to evaluate the mechanical performance of flexible pavements containing embedded charging units (CUs). A series of finite element models, validated with full-scale experimental data, were used to assess the influence of axle loading, material properties, layer configurations, bonding conditions, …

Improving Traffic Management During Special Events At The Sun Bowl Stadium, Marek Polak

Open Access Theses & Dissertations

This thesis focuses on improving traffic conditions around the Sun Bowl Stadium, especially during large public events. The goal is to propose effective solutions that enhance the use of public infrastructure during both event days and normal traffic conditions. To understand the current situation, two surveys were conducted during a football game - one monitoring parking lot occupancy and the other measuring traffic volumes using video recordings and pressure sensors. Based on the collected data, design changes were proposed for two key intersections: Sun Bowl Dr. with W. University Ave., and Sun Bowl Dr. with Glory Rd. The new designs …

Feasibility Of On-Demand Charging For Private Evs At The El Paso International Airport, Katerina Zizalova

Open Access Theses & Dissertations

As electric vehicle adoption rate continues to grow globally and across the United States, it is desirable for airports to adapt to meet the needs of electric vehicle driving passengers. This thesis develops an implementation plan for an on-demand charging solution for the El Paso International Airport to address the current limitations in charging infrastructure. After analyzing the electric vehicle adoption trends, four charging solutions were studied: conventional fixed-point charging, fixed-point charging with added valet service, mobile charging service and wireless inductive charging. Using decision-making matrices implementing criteria such as operational suitability, scalability or costs, one charging solution was recommended …

Best Metros For Manufacturing In The Mountain West, 2024, Taylor Volk, Sean Curry, Mohit Pande, Anirudh Polagani, Kristian Thymianos, Caitlin J. Saladino, William E. Brown Jr.

Transportation & Infrastructure

This fact sheet examines data on the top U.S. metros for manufacturing across four Mountain West states (Arizona, Colorado, Utah, and Nevada). The original report, titled “Best Metros for Manufacturing in the U.S.” by Commercial Search includes data on the top 100 U.S. metros for manufacturing.

El Transporte Público: Catalizador De Cambios Económicos Y Sociales, Nathan Wright

Best Integrated Writing

This paper is a comprehensive approach based on research, to a problem whose implications are the function of society itself. The trends, statistics, and problems are linked with an essay’s style that considers the situations of different types of people, from different social classes, professions and roles. The result is a scientific and human text –at the same time– full of evidence and suggested solutions for a better coexistence in a city that was a world leader in air transport. By comparing public transportation with that of other cities, through solid successive arguments, Nathan achieves an objective, convincing text, which …

Marjorie Barrick Museum Of Art, Zida Wang

Community Engagement Expo Research Posters

This poster presents Bus to Barrick, a museum education initiative at the Marjorie Barrick Museum of Art that provides free access to arts-based learning experiences for students across the Clark County School District. Through funded transportation, guided exhibition tours, and hands-on workshops, the program removes barriers to museum participation and promotes creativity, critical thinking, and cultural engagement. The poster outlines program operations, participation data, educational outcomes, and future goals while demonstrating how university museums can support equitable access to arts education and strengthen connections between higher education institutions and local communities.

Geography Of Non-Daytime Work And Employer-Centered Transit Accessibility, Julia Mai Plotts

Dissertations and Theses

Non-daytime shift workers--including those on evening, night, rotating, and split shifts--face unique transportation challenges. Those who rely on public transit often contend with complicated commutes and longer wait times on public transit systems that have traditionally catered to the 9-to-5 workforce. Meanwhile, the non-daytime workforce is disproportionately composed of marginalized groups, including low-income workers, racial and ethnic minorities, and individuals with fewer education credentials. For many lower-income workers, car ownership does not present a viable alternative, as cost-of-ownership consumes a significant portion of their income. This makes access to nighttime public transit a critical equity concern. However, most transit accessibility …

Modeling The Impacts Of Disruptive Events On Driving Behaviors, Transportation Safety, And Equity: Advanced Statistical Insights From The Covid-19 Pandemic, Xiaomeng Dong

Civil & Environmental Engineering Theses & Dissertations

This dissertation aims to understand how disruptive events —particularly the COVID-19 pandemic—affect driving behaviors, transportation safety and equity by leveraging advanced statistical modeling techniques and data from Virginia. This research pursues three overarching objectives. First, it employs multigroup structural equation modeling (SEM) to uncover the complex interrelationships among risky driving behaviors, injury severity, and pandemic-related factors, delineating the mechanisms through which COVID-19 has impacted crash outcomes via changing risky driving behaviors. Second, it leverages hidden Markov models to trace shifts in safety states over the pre-, during-, and post-pandemic periods, determining whether and when safety conditions return to pre-pandemic norms. …

Navigating Outsourced Manufacturing: General Motors' Strategic Challenges In Mexico, Alvaro Soler, Jose Maria Gallegos

Posters - 2025

Outsourcing manufacturing has become a strategic necessity for many global corporations in today’s fast-changing global economy. Over the past decades, many U.S. companies have outsourced production to regions like Latin America and China, seeking geographical advantages, lower labor costs, and access to skilled workforces to remain competitive. General Motors, one of the largest automobile manufacturers globally, exemplifies this trend. By outsourcing production to Mexico since 1935, GM highlights how multinational companies strategically use outsourcing to optimize costs and improve efficiency. Employing over 25,000 workers and contributing over 12% of its annual production in 2023, GM demonstrates the broader significance of …

Evaluation Of Long-Term Performance Of Transportation Earthworks Prone To Weather-Driven Deterioration Under Changing Climate, Amr Morsy, Emma Varela

Mineta Transportation Institute

Embankments are key transportation infrastructure features providing essential support for long, linear stretches of transportation infrastructure, including highways and railways, in California and globally. Clay embankments are susceptible to weather-related deterioration processes that can gradually compromise their stability and, in some cases, lead to unexpected failures. Climate change, along with the associated shifts in weather patterns, is projected to adversely impact weather-related deterioration processes, leading to exacerbated failures and/or shorter service life. This study evaluated the impact of climate change on the rate of weather-driven deterioration of embankments in two locations in California: Los Angeles and Sacramento. Specifically, a multi-phase …

Latent Active Transportation Methodology, Maria Chierichetti, Fatemeh Davoudi Kakhki

Mineta Transportation Institute

Understanding and estimating latent demand for active transportation, such as walking and cycling, is essential for designing infrastructure and policies that promote sustainable mobility. Unlike traditional demand models that focus on observed trips, latent demand estimation seeks to quantify the unrealized potential for active travel due to barriers such as inadequate infrastructure, safety concerns, or lack of connectivity. This study develops a comprehensive latent demand model tailored for California, integrating geospatial analysis and multimodal accessibility assessments. The methodology employs a GIS-based corridor analysis approach, utilizing spatial accessibility metrics and distance decay functions to evaluate potential demand. It incorporates employment and …