Social and Behavioral Sciences Commons^™

Effect Of E-Bike Use On Route Choice And Bicycle Infrastructure Preference, Stephen Montaño

Graduate College Dissertations and Theses

As e-bikes become more popular, understanding how e-bikes may affect bicyclist travel behavior and infrastructure preferences can provide useful information to policymakers and bicycle facility designers to address inadequate bicycle facilities and potential safety concerns. We evaluate survey responses about infrastructure preferences of e-bike and conventional bicycle users, including their safety concerns in Chittenden County, Vermont. Generally, we find that conventional bicyclists and e-bike users have similar infrastructure preferences. The study finds that e-bike users tend to travel more frequently than conventional bicyclists, especially for utilitarian purposes. However, e-bike users may be more willing to use roadways with fewer bicycle …

Travel Behavior, Responses To Fuel Prices, And Barriers To Change In Small And Rural Communities, Erica Quallen

Graduate College Dissertations and Theses

Travel behavior and the factors which drive it in small and rural communities has been historically understudied in transportation research. By understanding these factors and behaviors, a clearer picture of these regions can be drawn so that meaningful change towards greenhouse gas reductions can be realized. My research aims to examine barriers to making sustainable travel behavior changes such as using multi-modal transportation, reducing overall amounts of travel, or moving to locations closer to necessary services. I do this by first evaluating what “rural” means in terms of existing definitions of the term. The assessment of rural definitions analyzes vehicle …

Estimating Aviation And Passenger Vehicle Emissions For Surveyed Long-Distance, Intercity Trips, Elizabeth Duffy

Graduate College Dissertations and Theses

Transportation in the United States is the largest sector contributor to greenhouse gas emissions (GHG) (EPA, 2020). The proportion of passenger miles for long-distance, intercity travel is estimated to be 30% of the total for air, on-road passenger vehicle, and other modes. Methods for estimating and mitigating these emissions have received limited focus and there is a need to evaluate if a reduction in long-distance travel emissions is feasible through behavior change including modal shift, vehicle occupancy, or destination choice. The focus of this research is the design and implementation of a carbon calculator that estimates the CO2 emissions of …

Modeling Electric Vehicle Energy Demand And Regional Electricity Generation Dispatch For New England And New York, Sarah E. Howerter

Graduate College Dissertations and Theses

The transportation sector is a largest emitter of greenhouse gases in the U.S., accounting for 28.6% of all 2016 emissions, the majority of which come from the passenger vehicle fleet [1,2]. One major technology that is being investigated by researchers, planners, and policy makers to help lower the emissions from the transportation sector is the plug-in electric vehicle (PEV). The focus of this work is to investigate and model the impacts of increased levels of PEVs on the regional electric power grid and on the net change in CO2 emissions due to the decrease tailpipe emissions and the increase in …

Exploration Of New Methods In Long Distance Transportation Data Collection And Tourism Travel In Vermont, Benjamin Kaufman

Graduate College Dissertations and Theses

ABSTRACT

Human transportation patterns have continued to shift and increase in rate as technology has made travel between spatially disparate locations more feasible. These movements are responsible for approximately one third of global carbon emissions, and account for one half of Vermont’s greenhouse gas output. Modeling transportation behaviors is difficult due to changing travel patterns and issues of surveying human participants. Long distance travel patterns are especially difficult and have not received the attention that urban mobility has within the literature.

In this Masters thesis, I describe current methods of transportation data collection and propose new methods, as well as …

Examining Disparities In Long-Distance Travel Access, Hannah Catherine Ullman

Graduate College Dissertations and Theses

This thesis examines several nuanced issues, including equitable access, regarding long-distance intercity travel. In the United States, studies of transportation equity focus on affordable access to local destinations and basic services. The limited studies of long-distance intercity travel focus on observed demand, ignoring latent or unmet demand. Both quantitative and qualitative data are used to explore the differences between those who participate in long-distance travel and those with unmet need for it. This thesis found that the ability to participate in long-distance travel plays a role in one’s overall well-being. Undertaking long-distance trips facilitates access to opportunity for cultural and …

Factors Influencing Mode Choice For Intercity Travel From Northern New England To Major Northeastern Cities, Sean Patrick Neely

Graduate College Dissertations and Theses

Long-distance and intercity travel generally make up a small portion of the total number of trips taken by an individual, while representing a large portion of aggregate distance traveled on the transportation system. While some research exists on intercity travel behavior between large metropolitan centers, this thesis addresses a need for more research on travel behavior between non-metropolitan areas and large metropolitan centers. This research specifically considers travel from home locations in northern New England, going to Boston, New York City, Philadelphia, and Washington, DC. These trips are important for quality of life, multimodal planning, and rural economies. This research …

Teenagers' Mode Choice To And From School And Technology Use For Transportation: Analysis Of Students From Five High Schools In Vermont And California, Paola Rekalde Aizpuru

Graduate College Dissertations and Theses

The carhops and drive-ins of the 1950s are symbolic of the freedom that the automobile has granted Americans. What the general public has gained from the automobile, however, may come at the expense of independent mobility and choices for today's adolescents, particularly those not yet old enough to drive or those from lower income families. Sprawl land use development patterns and limited transportation choices in most American cities often hold teenagers and their chauffeuring parents captive to the automobile. At the same time, information and communication technology is fast evolving and changing the ways in which teenagers live, interact, and …

Characterization Of Real-World Particle Number Emissions During Re-Ignition Events From A 2010 Light-Duty Hybrid-Electric Vehicle, Matthew Beach Conger

Graduate College Dissertations and Theses

Despite the increasing popularity of hybrid-electric vehicles (HEVs), few studies have quantified their real-world particle emissions from internal combustion engine (ICE) re-ignition events (RIEVs). RIEVs have been known to occur under unstable combustion conditions which frequently result in particle number emission rates (PNERs) that exceed stabilized engine operation. Tailpipe total PN (5 to 560 nm diameter) emission rates (#/s) from a conventional vehicle (CV) and hybrid electric vehicle (HEV) 2010 Toyota Camry were quantified on a 50 km (32 mi) route over a variety of roadways in Chittenden County, Vermont using the Total On-board Tailpipe Emissions Measurement System (TOTEMS). While …

Measuring Streetscape Design For Livability Using Spatial Data And Methods, Chester Wollaeger Harvey

Graduate College Dissertations and Theses

City streets are the most widely distributed and heavily trafficked urban public spaces. As cities strive to improve livability in the built environment, it is important for planners and designers to have a concise understanding of what contributes to quality streetscapes. The proportions and scale of buildings and trees, which define the three-dimensional extents of streetscapes, provide enduring, foundational skeletons. This thesis investigates how characteristics of such streetscape skeletons can be quantified and tested for appeal among human users.

The first of two journal-style papers identifies a concise set of skeleton variables that urban design theorists have described as influential …