Transportation Commons^™

Zone Path Construction (Zac) Based Approaches For Effective Real-Time Ridesharing, Meghna Lowalekar, Pradeep Varakantham, Patrick Jaillet

Research Collection School Of Computing and Information Systems

Real-time ridesharing systems such as UberPool, Lyft Line and GrabShare have become hugely popular as they reduce the costs for customers, improve per trip revenue for drivers and reduce traffic on the roads by grouping customers with similar itineraries. The key challenge in these systems is to group the “right” requests to travel together in the “right” available vehicles in real-time, so that the objective (e.g., requests served, revenue or delay) is optimized. This challenge has been addressed in existing work by: (i) generating as many relevant feasible combinations of requests (with respect to the available delay for customers) as …

How American Transit Agencies Determine Fare Policy: It All Comes Down To Politics, Julian Thesseling

CMC Senior Theses

This paper will provide readers with an understanding of the variables that US transit agencies grapple with when developing fare policy, with a particular focus on the political process. The framework chapter will examine the objectives of public transportation and how agencies face difficulties in achieving these objectives. While this paper will focus on American transportation policy, the framework will draw from the experiences of cities across the world. Three case study chapters will then each discuss an American city or region’s approach to fare policy, and how variables have either complicated or enhanced agencies’ ability to develop effective fare …

Extending Open Mobility To Mobility Data Justice: A Localized Case Study Of Gtfs-Oriented (Infra)Activism In Defense Of The Mobile-Digital Commons, David Moran

Electronic Theses and Dissertations, 2020-2023

Through a humanist lens, this research aims to conceptualize a Mobility Data Justice (MDJ) framework that re-orients both GTFS open transit data (General Transit Feed Specification) and transit rider activists towards collaborative Mobility Data Justice tactics. Transit riders and activists, in the age of Uberfication, have to account for and navigate the dynamics of how Big Data and platform economies are not only augmenting but co-opting political decision-making processes about public transit policy, planning and investment. Building on mobility justice and data justice theorists, I examine how the GTFS open data ecosystem can be operationalized via justice ontologies to support …

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 …

Time Domain Boundary Element Method Prediction Of Noise Shielding By A Naca 0012 Airfoil, Douglas M. Nark, Fang Q. Hu

Mathematics & Statistics Faculty Publications

As aircraft noise constraints become more stringent and the number/mixture of aircraft configurations grows, it becomes more important to understand the interaction of individual aircraft noise sources with nearby aircraft structures. Understanding these interactions and exploring possible approaches to mitigate or exploit their acoustic impact is essential for overcoming key noise barriers. This paper describes the further validation of a time domain boundary element approach for the prediction of the interactions between incident noise sources and nearby aircraft structures. Predictions were completed for multiple source locations and comparisons of these results with measured data are presented. Overall, very good agreement …

Data Files: Bi-Objective Optimization For Battery Electric Bus Deployment Considering Cost And Environmental Equity, Xiaoyue Cathy Liu, Yirong Zhou, Ran Wei, Aaron Golub

TREC Datasets and Databases

This data supports the research project Bi-objective Optimization for Battery Electric Bus Deployment Considering Cost and Environmental Equity and a final report published on NITC’s website.

Dataset collected through multiple sources and organized into different formats including CSV format, JSON format, shapefile and code repository.

Context: The research project develops a bi-objective model that aims to help transit agencies to optimally deploy BEB while considering both capital investment and environmental equity. The unique spatio-temporal characteristic of BEB system, charging limitations (on-route and in-depot charging), and operational constraints are also considered and incorporated into the model.

Strategies To Decrease Disorder And Diminishing Transit Ridership Through Fare Enforcement, Stephen Matthew Boehm

Walden Dissertations and Doctoral Studies

AbstractUrban rail transit systems are experiencing a decrease in ridership in part due to the perception of increased crime and disorder. To ensure passengers continue riding rail transportation, agency leaders must develop strategies to decrease crime and disorder caused by fare evasion. Grounded in the Kano model and Lean Six Sigma, the purpose of this qualitative case study was to explore strategies urban rail transit leaders use to reduce declining ridership associated with a perceived disorder caused by fare evasion. Data were collected using semistructured interviews of six urban rail transit leaders who manage fare enforcement efforts and a review …

Putting Policy In Its Place: Policy Enactment And Engagement Through A Multiscalar Policy-Shed Framework, Barbara L. Maclennan

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this research is to examine the spatial components integral to policy formation, implementation, and evaluation. The research uses solid waste as a case study to explore a multiscalar GIS policy-shed framework. To this end, the goal of this dissertation is to examine the spatial nature of public policy. The research applies spatial concepts and multiscalar methodological applications embedded within GIS and geovisualization to explore the complex spaces surrounding public policy implementation and evaluation.

Digital Disruption Solution For Airlines In Brazil, Camila Bisinoto Borges, Cristiane Lunardi Das Neves Rodrigues, Daniel Dias Landroni, Tatiane Mendonça, Leila Halawi

Publications

Since March 2017, the cost of denied boarding began to draw all Brazilian airlines' attention because of the Resolution 400 of the Brazilian National Civil Aviation Agency. This Resolution covers several items, but we will focus on the penalty that the airlines need to pay for each passenger who had his boarding denied involuntarily in domestic flights. Our goal is to create a plugin that any airline could use in their self-service check-in channels and direct communication with the passenger. It could also become a way to offer proactive accommodation options and monetary compensations due to itinerary or ticket schedule …

Workshop Outcomes Report: 1st International Workshop On Seismic Resilience Of Arctic Infrastructure And Social Systems, Majid Ghayoomi, Katharine Duderstadt, Alexander Kholodov, Alexander Shiklomanov, Matthew Turner, Elham Ajorlou

Faculty Publications

No abstract provided.

Strategies For Retaining Employees In The Trucking Industry, Dionne Bell- Pursley

Walden Dissertations and Doctoral Studies

Employee turnover is a recurring problem in organizations, affecting performance and productivity while depleting organizational resources. High driver turnover rates raise a company’s operating costs and reduce driver productivity, service quality, and highway safety in the trucking industry. When trucking industry leaders understand such factors, they can develop and implement strategies to increase truck driver retention. Grounded in Herzberg’s two-factor theory and supported by Maslow’s hierarchy of needs theory, the purpose of this single case study was to explore strategies trucking company leaders use to increase truck driver retention. The participants included eight executives from trucking companies in the southeast …

Transnational Threats To Maritime Systems And Seaport Security, Eric L. Hampton

Walden Dissertations and Doctoral Studies

An assessment of a 16-year period since the 9/11 attacks indicated that more than 14,000 security breaches in which security measures at seaports were circumvented due to vulnerabilities occurred and more than 24,000 suspicious activity reports were made. The susceptibility of United States’ seaports to groups engaged in criminal activities, including drug trafficking, cargo theft, and smuggling of contraband and people undermines security practices and renders the nation vulnerable to acts of terrorism. The purpose of this qualitative study was to explore seaport security measures to identify and understand internal and external factors that may impact protection practices at U.S. …

Smart Parking Systems: Reviewing The Literature, Architecture And Ways Forward, Can Biyik, Zaheer Allam, Gabriele Pieri, Davide Moroni, Muftah O' Fraifer, Eoin O' Connell, Stephan Olariu, Muhammad Khalid

Computer Science Faculty Publications

The Internet of Things (IoT) has come of age, and complex solutions can now be implemented seamlessly within urban governance and management frameworks and processes. For cities, growing rates of car ownership are rendering parking availability a challenge and lowering the quality of life through increased carbon emissions. The development of smart parking solutions is thus necessary to reduce the time spent looking for parking and to reduce greenhouse gas emissions. The principal role of this research paper is to analyze smart parking solutions from a technical perspective, underlining the systems and sensors that are available, as documented in the …

Perspectives On Cyber Security For Offshore Oil And Gas Assets, Iosif Progoulakis, Nikitas Nikitakos, Paul Rohmeyer, Barry Bunin, Dimitrios Dalaklis, Stavros Karamperidis

Articles

In an ever-evolving technological industry, the oil and gas sector is already moving forward through the adaptation of Industry 4.0 and the adaptation of advanced cyber technologies through Oil and Gas 4.0. As IT/OT (information technology/operational technology) systems are evolving technologically, so are the cyber security threats faced by the offshore oil and gas assets. This paper aims to raise the awareness of cyber security threats and the organizational and technical measures that need to be adopted by the oil and gas industry for remote and complex assets in the upstream sector. A comprehensive literature review covering the areas of …

Liquefied Natural Gas As Ship Fuel : A Maltese Regulatory Gap Analysis, Mark Philip Cassar, Dimitrios Dalaklis, Fabio Ballini, Seyedvahid Vakili

Articles

With water covering almost three-quarters of the Earth’s surface and by factoring in that the maritime transport industry is holding a comparative advantage in relation to all other means, activities associated with the seas and oceans of our planet are extremely vital for a normal functioning of global trade. Furthermore, evaluating the opportunities of the so-called “Blue Economy” and possibilities for further growth should be at the epicentre of future development plans. Indicative examples - apart from various endeavours of maritime transport - include other sectors, like shipbuilding and repairs, fishing activities and related processes, as well as oil and …

Can Market-Based Measures Stimulate Investments In Green Technologies For The Abatement Of Ghg Emissions From Shipping? A Review Of Proposed Market-Based Measures, Anastasia Christodoulou, Dimitrios Dalaklis, Aykut Ölcer, Fabio Ballini

Articles

In order for the maritime sector to align itself with the targets set by the Paris Agreement, it should reduce its GHG emissions by at least 50% by 2050 compared to 2008 with the ultimate aim to phase them out entirely. It is along these lines that in April 2018 the International Maritime Organisation (IMO) developed a strategy, consisting of a range of potential technical and operational measures to reduce GHG emissions from international shipping, ranking from improvements on ship design to the employment of alternative fuels. In order to stimulate the adoption of these policies, the IMO also considers …

Maritime Robotics And Autonomous Systems Operations : Exploring Pathways For Overcoming International Techno-Regulatory Data Barriers, Tafsir Martin Johansson, Dimitrios Dalaklis, Aspasia Pastra

Articles

The current regulatory landscape that applies to maritime service robotics, aptly termed as robotics and autonomous systems (RAS), is quite complex. When it comes to patents, there are multifarious considerations in relation to vessel survey, inspection, and maintenance processes under national and international law. Adherence is challenging, given that the traditional delivery methods are viewed as unsafe, strenuous, and laborious. Service robotics, namely micro aerial vehicles (MAVs) or drones, magnetic-wheeled crawlers (crawlers), and remotely operated vehicles (ROVs), function by relying on the architecture of the Internet of Robotic Things. The aforementioned are being introduced as time-saving apparatuses, accompanied by the …

The Social Dimension In Transportation Planning/ البعد الاجتماعي في نظام تخطيط النقل العام في مصر, Ahmed Hamdy, Fatma Rashad, Lama Atef

Papers, Posters, and Presentations

Public transportation is a main player in Egyptians’ daily lives. It links production and consumption areas in many vital aspects, including economy, construction, and social development. Accordingly, the accessibility of citizens to public transportation and its services has been adopted as a social dimension for it in this paper, as it affects the lives of many segments of Egyptians.

Reimagining China’S Transportation Funding Investments In Africa In The Context Of Covid-1, Clovia Hamilton, Sira Maliphol

Technology & Society Faculty Publications

Africa has not invested enough in its healthcare system, and China has been investing in and financing much of Africa’s transportation system. Many African countries’ fragile health and transportation systems have been further weakened by the COVID-19 pandemic. This literature review confirms the interdependence of the key functional areas of comprehensive development planning and the importance of building and maintaining a sound transportation infrastructure. With respect to partnerships with China, African nations need to strengthen government functional areas more comprehensively, considering all of the areas of development planning including trade as well as transportation and aid issues. It is all …

Online Bus Speed Prediction With Spatiotemporal Interaction: A Laplace Approximation-Based Bayesian Approach, Haipeng Cui, Kun Xie, Bin Hu, Hangfei Lin

Civil & Environmental Engineering Faculty Publications

This study proposes a novel Bayesian hierarchical approach for online bus speed prediction by explicitly accounting for the spatiotemporal interaction (STI) of speed observations. The use of Laplace approximation can expedite the estimation of Bayesian models and enable the implementation of online prediction. Large numbers of trials are carried out to identify significant predictors and the optimal length of the look-back time window to achieve the highest prediction accuracy. The spatiotemporal interacting patterns are also explored, and results show that the Type IV model assuming the structured spatial effect interacts with the structured temporal effect can best accommodate the bus …