Transportation Commons^™

Final Project Report, Shahereh Kermanshachi, Kelly Bergstrand

CTEDD Final Project Reports - Archive

No abstract provided.

Final Project Report, Subhrajit Guhathakurta, Amit Kumar

CTEDD Final Project Reports - Archive

No abstract provided.

Damage Quantification Of Energy Developing Areas Of South Texas Using The Axle Load Spectra, Carlos Licon

Open Access Theses & Dissertations

Advances in technology, particularly in crude oil extraction, natural gas production, wind energy farms, and other pertinent industries have contributed to exponential growth in energy development activities. In Texas, this energy boomed created large volumes of Over-Size/Over-Weight (OS/OW) truck traffic operations that adversely affected the service life of the transportation infrastructure in the network. This study focused on characterizing the traffic operations in overweight corridors and energy sector zones of South Texas in order to properly quantify the damage induced by overweight vehicles on the pavement structures. To achieve this, the Axle Load Spectra (ALS) database was developed through deployment …

An Initial Exploration Of The 2005 Iowa Rural Interstate Speed Limit Increase Using Linear Regression, Thomas Ryan Cook

Electronic Theses and Dissertations

Speed limit increases, particularly on interstates have been studied and researched many times over the course of the last 50 years in the United States. These research efforts began after the implementation of the National Maximum Speed Law (NMSL), which reduced all speed limits to a maximum of 55-mph. In the years that followed, this restriction was relaxed to 65-mph with the Surface Transportation and Uniform Relocation Assistance Act (STURAA) and ultimately repealed later by the National Highway System Designation Act (NHSDA). Since the repeal, states reacted in myriad of ways and many studies documented the changes of those reactions. …

Reducing Risk In Public-Private Partnership Contracts: Two Examples From Highway Tolling Projects, Martin Mayer, Juita-Elena Wie Yusuf, Lenahan L. O'Connell

School of Public Service Faculty Publications

In an effort to address financial constraints and environmental concerns states have increasingly turned to a combination of un-tolled (HOV) and tolled (HOT) lanes. Public-private partnerships (3Ps) are a popular mechanism for this more sustainable approach to highway infrastructure that couples environmental sustainability (efficient utilization of existing lanes, less congestion) with financial sustainability (private investment). This chapter offers an approach to 3P contract writing for HOV/HOT facilities that is structured by a stakeholder analysis of actors in the project accountability environment. By analyzing two Virginia 3P highway projects, the chapter shows it is possible to build into a contract a …

Supply Chain Managers' Reverse Logistics Strategies To Control Cost Through Risk Mitigation, Lawrence A. Reeves

Walden Dissertations and Doctoral Studies

Supply chain managers in the food and beverage industry face significant challenges regarding the use of effective reverse logistics strategies to reduce supply chain disruptions, control risk, and reduce costs. Through the lens of resource dependence theory, the purpose of this multiple case study was to explore reverse logistics strategies used by supply chain managers in the United States to control cost through risk mitigation. Participants in this study included 5 supply chain managers in the food and beverage distribution industry in the state of Georgia who implemented successful reverse logistics strategies to control cost through risk mitigation. Data were …

Recruiting Strategies For Increasing The Number Of Emergency Medical Technician Personnel, Carolyn Denise Mack

Walden Dissertations and Doctoral Studies

Demand for the emergency medical technician (EMT) is 2 times greater than that of all other occupations. Sustainability of ambulance services (AS) personnel is dependent upon the recruitment of EMTs into the industry. The purpose of this multiple case study was the exploration of the recruiting strategies that AS administrators used to increase the number of EMTs. Herzberg's 2 factor theory of motivation was the conceptual framework for this study. The data collection instrument included semistructured interviews with 6 AS company executives in southeastern New Mexico and southwestern Texas. Secondary data and document from each state's emergency medical services personnel …

A State Aggregation Approach For Stochastic Multiperiod Last-Mile Ride-Sharing Problems, Lucas Agussurja, Shih-Fen Cheng, Hoong Chuin Lau

Research Collection School Of Computing and Information Systems

The arrangement of last-mile services is playing an increasingly important role in making public transport more accessible. We study the use of ridesharing in satisfying last-mile demands with the assumption that demands are uncertain and come in batches. The most important contribution of our paper is a two-level Markov decision process framework that is capable of generating a vehicle-dispatching policy for the aforementioned service. We introduce state summarization, representative states, and sample-based cost estimation as major approximation techniques in making our approach scalable. We show that our approach converges and solution quality improves as sample size increases. We also apply …

Strategies To Increase Profitability And Longevity Of Small Trucking Businesses, Derrick Olando Brown

Walden Dissertations and Doctoral Studies

Typically, small businesses have encountered issues with sustaining their enterprise for longer than 5 years after inception, which can adversely affect the prosperity of the communities in which the businesses operate. The purpose of this multiple case study was to identify and explore strategies some owners of small business trucking companies used to achieve profitability and longevity for longer than 5 years. The population of the study consisted of owners of 4 small business trucking companies located in Northern Virginia, who demonstrated profitability and longevity for longer than 5 years of operation. The conceptual framework for this study was systems …

Energy Intensity As An Ecological Factor In The Selection Of The Manufacturing Process, Artur Soroczyński, Roman Haratym, Krzystof Rechowicz

VMASC Publications

The article presents the analysis of the implementation of selected elements of car transport in the aspect of ecology. The basic issue that affects the protection of the environment (ecology) is the value of energy intensity in the manufacture of products. The elements made in the production process of plastic mouldings were compared. The amount of energy in kJ needed to produce 1 kg of a given product was estimated. Next, the dependencies between the value of computational energy intensity and the emission of gases affecting the environment of CO₂, SO₂, NO_x were presented. As …

Support For And Behavioral Responses To Tolls: Insights From Hampton Roads, Virginia, Juita-Elena Wie Yusuf, Khairul Azfi Anuar, Lenahan L. O'Connell, David Chapman, Donta Council, Tancy Vandecar-Burdin, Meagan M. Jordan

School of Public Service Faculty Publications

This chapter analyzes the experiences with tolling in the Hampton Roads region of Southeastern Virginia to better understand residents' and drivers' support for tolls and behavioral responses to tolls. The Hampton Roads region, with its population of 1.7 million and extensive network of highways, roads, bridges, and tunnels, has a long history of toll facilities that date back to the 1920s. The most recent tunnel tolls, associated with the Elizabeth River Crossing Project and introduced in February 2014, are the focus of this chapter. This chapter analyzes two sets of survey data to provide insights that have implications for policies …

Can Uber And Lyft Save Public Transit?, Emily Zheng

Pomona Senior Theses

I examine whether Uber and Lyft are currently complements or substitutes of public transit, and how partnerships between cities and ride sharing companies can increase their complementary relationship and solve parking and mobility issues. The results suggest that transportation network companies (TNCs) like Uber and Lyft do not have a statistically significant effect on public transit ridership overall, but are complements of public transit for certain populations. Policies that give discounts for TNC rides taken to and from transit stops help solve the first mile / last mile problem, which consequently help increase transit ridership.

From College To The City: Implications Of Rail Transit On The Movement Of The Young, College Educated Into The City Center, Lenahan L. O'Connell, Juita-Elena Wie Yusuf, Timothy J. Brock, Benjamain Blandford

School of Public Service Faculty Publications

This chapter focuses on how investment in the American rail infrastructure has shaped changes in the population and residential patterns. Specifically, the chapter examines the association between commuter rail systems, urban rail transit systems, and the movement of the college-educated young into the inner city. Two hypotheses are proposed about the characteristics of rail systems and the relationship to the growth in the percentage of young college graduates residing in close-in neighborhoods. Using a sample of central cities within the 51 largest metropolitan areas in the U.S., the chapter compares the growth in young college graduates (ages 25 to 34 …

The Impact Of Transportation Network Companies On Public Transit: A Case Study At The San Francisco International Airport, Lianne Renee Sturgeon

Scripps Senior Theses

The emergence and rapid growth of Transportation Network Companies (TNCs), such as Uber and Lyft, has challenged the transportation industry by offering a new mode of transportation to consumers. It is imperative that transit agencies and cities understand the effect of TNCs on public transit usage to make informed decisions. This study analyzes the impact of TNCs on Bay Area Rapid Transit (BART) ridership at the San Francisco International Airport (SFO) to measure the effect of TNCs on public transit. Using a fixed effects model to analyze hourly BART and TNC ridership data from 2011 to 2018, these findings suggest …

Cathedral Mobility: A Mobility Strategy For Cathedral Park Neighborhood 2019, Chad Vinson Tucker, Ian Clancy, Erik Memmott

Master of Urban and Regional Planning Workshop Projects

The Cathedral Park Neighborhood is a wonderful area to live with beautiful parks and a vibrant commercial center. Unfortunately, the current transportation infrastructure makes it difficult to access everything this neighborhood has to offer without a car. A few of the transportation issues with which current residents must contend are:

• The neighborhood has no bike lanes or marked crosswalks.
• Several streets dead-end because of steep terrain issues.
• The steepness also makes it difficult or impossible for many people, including older persons or people with disabilities, to access the river and Cathedral Park.
• Many streets are unpaved and uncomfortable to use. …

Data From: How Will Autonomous Vehicles Change Local Government Budgeting And Finance? Case Studies Of On-Street Parking, Curb Management, And Solid Waste Collection, Benjamin Y. Clark

TREC Datasets and Databases

Datafiles

Parking Occupancy Datasets: These CSV (comma separated values) datafiles include parking occupancy data from the Seattle Department of Transportation (SDOT). Each of the 11 datafiles indicates the time period that it includes, with dates ranging from January 1, 2012 to December 31, 2017. Each file contains 6 months of data on block-by-block occupancy of paid parking. The number of available spaces were calculated from this dataset in addition to the median and mean occupancy rates for each Tract. City data documentation indicates the following about the dataset: “The City of Seattle has created an on-street paid parking occupancy …

Ready Streets, Parkrose And Argay: Community Report, Kerry Aszklar, Jaye Cromwell, Bryan Nguyen, Joey Posada, Sabina Roan, Sophie Turnbull-Apell

Master of Urban and Regional Planning Workshop Projects

How will people get around after a major earthquake? The Ready Streets project examines ways to create a strong, connected, and disaster-resilient mobility network in the Parkrose-Argay neighborhood of Portland, as well as replicable criteria for future neighborhoods. This is accomplished by examining the existing conditions of the area, working with community members to determine key destinations and priorities, and formulating recommendations to the Portland Bureau of Transportation.

The 1 page brochure for the public is available in the Additional Files below.

Analysis Of Bus Ride Comfort Using Smartphone Sensor Data, Hoong-Chor Chin, Xingting Pang, Zhaoxia Wang

Research Collection School Of Computing and Information Systems

Passenger comfort is an important indicator that is often used to measure the quality of public transport services. It may also be a crucial factor in the passenger’s choice of transport mode. The typical method of assessing passenger comfort is through a passenger interview survey which can be tedious. This study aims to investigate the relationship between bus ride comfort based on ride smoothness and the vehicle’s motion detected by the smartphone sensors. An experiment was carried out on a bus fixed route within the University campus where comfort levels were rated on a 3-point scale and recorded at 5-second …

Is Promoting Public Transit An Effective Intervention For Obesity? A Longitudinal Study Of The Relation Between Public Transit Usage And Obesity, Zhaowei She, Douglas M. King, Jacobson H. Sheldon

Research Collection Lee Kong Chian School Of Business

There is increasing evidence on the association between public transit usage and obesity. To further understand the causal impact of changes in county public transit usage on county obesity rates, this paper presents a longitudinal study on this topic. Annual health data from the Behavioral Risk Factor Surveillance System (BRFSS) and transportation data from the National Household Travel Survey (NHTS) were aggregated and matched at the county level, to create a panel data set with 227 counties from 45 states across two time periods, 2001 and 2009. Annual public transit funding, obtained from the National Transit Database (NTD), is chosen …

Pedal To The Metal: Accelerating The Transition To Electric Vehicles, Nicole Larson

Pomona Senior Theses

This thesis explores barriers to widespread adoption of electric vehicles and proposes possible policy solutions. It analyzes main barriers including awareness, upfront cost, and range anxiety, as well as existing policy solutions, and a detailed case study examining policy differences in high adopting versus low adopting states. Awareness and eduction surrounding electric vehicles and their capabilities, financial incentives and market mechanisms for reducing costs, and charging infrastructure and efficiency improvements are examined. Conclusions were formed through interviews with various experts as a method of data collection. It was found that many existing state and local level policies could be scaled …