Social and Behavioral Sciences Commons^™

Data-Driven Operational And Safety Analysis Of Emerging Shared Electric Scooter Systems, Qingyu Ma

Computational Modeling & Simulation Engineering Theses & Dissertations

The rapid rise of shared electric scooter (E-Scooter) systems offers many urban areas a new micro-mobility solution. The portable and flexible characteristics have made E-Scooters a competitive mode for short-distance trips. Compared to other modes such as bikes, E-Scooters allow riders to freely ride on different facilities such as streets, sidewalks, and bike lanes. However, sharing lanes with vehicles and other users tends to cause safety issues for riding E-Scooters. Conventional methods are often not applicable for analyzing such safety issues because well-archived historical crash records are not commonly available for emerging E-Scooters.

Perceiving the growth of such a micro-mobility …

Estimated 2020 Co2 Emission Reductions In Virginia’S Transportation Sector From Covid-19, Eden E. Rakes, Pamela R. Grothe, Jeremy S. Hoffman

Virginia Journal of Science

The initial lockdown phase of the COVID-19 pandemic presented an unfortunate opportunity to observe how abrupt, large-scale changes in traffic volume can reduce greenhouse gas emissions. This study explores how carbon dioxide (CO₂) emissions from Virginia’s transportation sector may have been affected by the changes in activity stemming from COVID-19 to inform more carbon-neutral policies as the state recovers from the economic downfall. Emission savings were calculated by multiplying the percent change from 2019 to 2020 in traffic volume from the Virginia Department of Transportation with the business-as-usual 2020 U.S. Environmental Protection Agency estimate of CO₂ emissions …

Modeling And Simulation Of Cascading Failures In Transportation Systems During Hurricane Evacuations, Yuan Zhu, Kaan Ozbay, Hong Yang, Fan Zuo, Di Sha

Computational Modeling & Simulation Engineering Faculty Publications

Effective and timely evacuation is critical in alleviating the impact of hurricanes. As such, evacuation models are often sought to support the preparedness of evacuations. One important task in the modeling process is to evaluate exogenous factors that cause transportation system capacity loss during evacuation. Typical factors include direct damage to the roadway network due to storm surge and cascading impacts because of other facilities failures. For example, power outage can lead to signal failure and subway suspension. This paper aims to develop a macroscopic simulation-based approach to study the capacity loss of the roadway network in evacuation due to …

Workshop #3: Transportation And Sheltering Logistics During The 2020 Hurricane Season: After-Action Report (Aar), Converge Nsf Working Group, Joshua G. Behr, Wie Yusuf, Jennifer Marshall, Elizabeth Dunn

Presentations, Lectures, Posters, Reports

Participants in the CONVERGE COVID-19 Working Group’s Workshop 3 on Logistics breakout sessions identified key issues that included population considerations, training needs, continuity of operations and resources still available, site planning (i.e., feeding, registration, shelter design, resources, family unity), facility requirements, and supplies needed during a hurricane evacuation.

Operational safety measures and population considerations were mentioned throughout the workshop. This included the need for identifying additional resources, facilities, and staffing to be able to ensure safety is a priority while accommodating social distancing recommendations and the needs of vulnerable populations and staff. Workshop participants emphasized the need to identify new …

Effects Of Focal On Driver Calibration Of Attention Maintenance Performance Using Normalized Difference And Brier Scores, James Richard Unverricht

Psychology Theses & Dissertations

Young drivers are specifically poor at maintaining attention to the forward roadway while driving. Additionally, drivers are poorly calibrated to their own abilities, often overestimating their driving skills. The current research examines the effect of FOCAL on a young driver’s calibration using two different measures, normalized difference scores and the Brier score. Thirty-six participants received either FOCAL or Placebo training program, immediately followed by driving simulator evaluation of their attention maintenance performance. In the evaluation drive, participants had driven through four scenarios in a driving simulator with their eyes tracked. Participants were asked to perform a mock visual search task …

Latent Choice Models To Account For Misclassification Errors In Discrete Transportation Data, Lacramioara Elena Balan

Civil & Environmental Engineering Theses & Dissertations

One of the most fundamental tasks when it comes to analyzing data using statistical methods is to understand the relationship between the explanatory variables and the outcome. Misclassification of explanatory variables is a common risk when using statistical modeling techniques. In this dissertation, we define ‘misclassification,’ as a response that is reported or recorded in the wrong category; for example, a variable is registered as a one when it should have the value zero. Misclassification can easily happen in any data; for example, in an interview setting where the respondent misunderstands the question or the interviewer checks the wrong box. …

Impact Of Trucking Network Flow On Preferred Biorefinery Locations In The Southern United States, Timothy M. Young, Lee D. Han, James H. Perdue, Stephanie R. Hargrove, Frank M. Guess, Xia Huang, Chung-Hao Chen

Electrical & Computer Engineering Faculty Publications

The impact of the trucking transportation network flow was modeled for the southern United States. The study addresses a gap in existing research by applying a Bayesian logistic regression and Geographic Information System (GIS) geospatial analysis to predict biorefinery site locations. A one-way trucking cost assuming a 128.8 km (80-mile) haul distance was estimated by the Biomass Site Assessment model. The "median family income," "timberland annual growth-to-removal ratio," and "transportation delays" were significant in determining mill location. Transportation delays that directly impacted the costs of trucking are presented. A logistic model with Bayesian inference was used to identify preferred site …

Transportation Asset Exposure, Adaptation Alternatives, And Infrastructure Resilience: Steering Committee Project Appraisal, Bahar Barami

May 18, 2016: The Economic Impacts of Sea-Level Rise in Hampton Roads

PDF of powerpoint presentation at the workshop "The Economic Impacts of Sea-Level Rise in Hampton Roads: An Appraisal of the Projects Underway" on May 18, 2016 at the Virginia Modeling and Simulation Center, 1030 University Blvd, Suffolk, VA 23435

Green Transportation For A Green Earth, Petros J. Katsioloudis, Mildred V. Jones

STEMPS Faculty Publications

Transportation is one of the biggest contributors to the destruction of the environment. Results from environmental research and pursuant governmental regulations are changing the way companies do business and how transportation systems address the future. The Environmental Protection Agency (EPA) has been at the forefront in leading environmental research and instituting policies and regulations to fight the issues impacting the environment. The transportation industry and consumers alike are concerned about the environment, energy resources, efficiencies, and economics. In this article, the authors suggest that it is vital that people promote the protection of the environment and strengthen the laws that …

Dispersion Or Re-Segregation: A Spatial And Temporal Analysis Of Public Policies And Their Impact On Urban African American Mobility, Brandi Lynette Blessett

Theses and Dissertations in Urban Studies

This study seeks to test Hirsch's second ghetto thesis in the city of Baltimore, Maryland. Hirsch suggested that the role of government, public policies, and administrative discretion were responsible for the re-segregation of African Americans into second ghetto communities in Chicago. Many scholars have used Hirsch's framework to explain ghetto formation. This investigation seeks to extend the literature in several ways. First, several national policies were investigated to determine their impact on African American mobility in Baltimore: the Housing Act of 1937 (public housing), the Housing Act of 1949 (urban renewal), and the Interstate Highway Act of 1956 (transportation). Second, …

Modeling Decision Making Related To Incident Delays During Hurricane Evacuations, Robert Michael Robinson

Computational Modeling & Simulation Engineering Theses & Dissertations

Successful evacuations from metropolitan areas require optimizing the transportation network, monitoring conditions, and adapting to changes. Evacuation plans seek to maximize the city's ability to evacuate traffic to flee the endangered region, but once an evacuation begins, real time events degrade even the best plans.

To better understand behavioral responses made during a hurricane evacuation, a survey of potential evacuees obtained data on demographics, driving characteristics, and the traffic information considered prior to and during an evacuation. Analysis showed significant levels of correlation between demographic factors (e.g., gender, age, social class, etc.) and self-assessed driver characteristics, but limited correlation with …

Part 7: Is Hampton Roads Receiving It's "Fair" Share From The Commonwealth?, Regional Studies Institute, Old Dominion University

State of the Region Reports: Hampton Roads

All things considered, the region has a case to make when it argues that it receives less than its “fair” share of state government spending. The geographic distribution of expenditures is particularly disadvantageous to Hampton Roads in the areas of K-12 education and car tax reimbursements, but less so in transportation and higher education.

Robustness And Control Of A Magnetically Levitated Transportation System, Grzegorz Oleszczuk

Mechanical & Aerospace Engineering Theses & Dissertations

Electromagnetic suspension of Magnetic Levitation Vehicles (Maglev) has been studied for many years as an alternative to wheel-on rail transportation systems. In this work, design and implementation of control systems for a Maglev laboratory experiment and a Maglev vehicle under development at Old Dominion University are described. Both plants are modeled and simulated with consideration of issues associated with system non-linearity, structural flexibility and electromagnetic force modeling. Discussion concerning different control strategies, namely centralized and decentralized approaches are compared and contrasted in this work. Different types of electromagnetic non-linearities are considered and described to establish a convenient method for modeling …

Dissociable Aspects Of Mental Workload: Examinations Of The P300 Erp Component And Performance Assessments, Carryl L. Baldwin, Joseph T. Coyne

Psychology Faculty Publications

Advanced technologies have enabled the choice of either visual or auditory formats for avionics and surface transportation displays. Methods of assessing the mental workload imposed by displays of different formats are critical to their successful implementation. Towards this end a series of investigations were conducted with the following aims: 1) developing analogous auditory and visual versions of a secondary task that could be used to compare display modalities; and 2) to compare the sensitivity of neurophysiological, behavioral and subjective indices of workload. Experiments 1 and 2 confirmed that analogous auditory and visual secondary oddball discrimination tasks were of equivalent difficulty …

Part 7: The Impact Of State Mandates On Hampton Roads, Regional Studies Institute, Old Dominion University

State of the Region Reports: Hampton Roads

Local elected officials often complain that the Commonwealth imposes costly mandates on the cities and counties of the region. How many mandates are there and what are their costs? The answer to both is, more than most people think.

The State Of The Region: Hampton Roads 2000, James V. Koch, Aditi Agarwal, Vinod Agarwal, Rebecca Bowers, Steve Daniel, Michele Darby, John Gawne, Beth Herders, Jeffrey Harlow, Tatiana Isakovski, Sharon Lomax, Helen Madden, Stephen Medvic, Deborah L. Miller, Wayne Talley, Gilbert Yochum

Economics Faculty Books

Those who know and love the region of Hampton Roads wish to make it an even better place to live than it is currently. In order for us to achieve that end, we must know literally "where we are" in critical areas. This first "State of the Region" Report is designed to provide citizens with a detailed, though not burdensome, look at several critical aspects of the lives we live in Hampton Roads. The Report focuses on topics such as the regional economy (including the tourist and military sectors), the workforce, K-12 education, technology, and of course, government and regional …