Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"freight rail"”.
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Constraint-based local search for container freight rail scheduling
A traditional container rail service is based on regular timetables. This causes a risk that some customers may turn away if their preferred itinerary is not attainable and the take-up of some services in a fixed schedule may be low and therefore not profitable. To increase railway's profitability …
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Weekly crew scheduling for freight rail engineers : a network approach
Freight rail engineers and conductors have long faced unpredictable and inflexible work schedules, leading to on-the-job fatigue, compromised safety and poor work-life balance. This paper aims to design robust weekly schedules for these crew members to alleviate the pressures associated with …
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Estimation of run times in a freight rail transportation network
… thesis is to improve the accuracy of individual freight train run time predictions defined as the time between departure from an origin node to arrival at a destination node not including yard time. A correlation analysis is conducted to identify explanatory variables that capture predictable …
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Task modeling and assessment for human-system interaction in freight rail operations
… and their interactions with automation in rail operation. A task model was developed by reviewing existing Cognitive Task Analyses, and also by using concept mapping to identify information gaps which were then filled via expert interviews. Engineer and conductor goals and priorities were …
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Balancing China's Seasonal Intercity Travel Demand: Alternatives for Freight Rail Expansion to Reduce Seasonal Passenger Rail Demand
… transportation systems, particularly passenger rail. This transportation problem has emerged due to spatial economic imbalance: workers have had to travel betweentheir homes in rural hinterlands to factory jobs on the industrial coast, which had grown into amigratory population of 261,390,000 by …
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Productivity of the U.S. freight rail industry: a review of the past and prospects for the future
Productivity growth in the U.S. freight rail industry has slowed in recent years, raising the issue of the sustainability of the significant improvements achieved during the past three decades. Indeed, between 1979 and 2009, all the inputs of the industry saw their productivity increased by rates …
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Techno-Economic Analysis of Line Haul and Switcher Locomotive Propulsion by Diesel, Battery, and Hydrogen Fuel Cell Technologies
… greenhouse gas (GHG) emissions within the freight rail industry of the United States transportation sector. The transportation sector, being a significant contributor to the nation’s GHG emissions, requires urgent attention to mitigate environmental and public health impacts. This thesis …
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Rail Rebound: The Impact of Freight Rails on Regional Development in the United States, 1970-2010
<p>Railroads have played a critical role in economic growth and development, and they exert a tremendous impact on the distribution and redistribution of the population. However, the impacts of railroads, especially freight rails, on population change and socioeconomic development are not well …
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Prediction of arrival times of freight traffic on us railroads using support vector regression
… of the travel times on the United States freight rail network is high due to large network demand relative to infrastructure capacity especially when traffic is heterogeneous. Variable runtimes pose significant operational challenges if the nature of runtime variability is not predictable. …
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Assessing the level of service for shipments originating or terminating on short line railroads
This thesis measures railroad freight trip time and trip time reliability for freight rail shipments involving short lines in 2006. It is based on an underlying MIT study commissioned by members of the short line railroading industry, including the American Short Line Rail Road Association, and …
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Assessing the economic value of using structural health monitoring systems on South African bridges by studying the Ermelo-Richards Bay Freight Railway line
… methods. The detailed study was conducted on railway bridges on the Transnet Freight Rail (TFR) Ermelo - Richards Bay coal route to assess the contribution that a commodities line such as this one makes to the South African economy. This study makes use of data from Transnet to establish …
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An Approach for Conducting Stakeholder Interviews for a Novel Technology, as applied to the Locomotive Industry
… the development of a survey to interview US freight railroad engineers for the information requirements and the possible benefits of a new type of “augmented reality head up display” (AR-HUD). The goal is to use a windscreen mounted transparent display to provide a wide field-of-view while …
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The Changing Role of Public-Private Partnerships in Urban Transportation: A Case Study of the Rise of P3s in Denver, CO
… projects, (2) the partnerships between freight and passenger rail services, and (3) emerging collaborations of local governments, transit agencies, and transportation network companies (TNCs).</p> <p>The purpose of the first study was to examine the recent use of P3s in the Denver …
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Geospatial Analysis of the Global Supply Chain and Transportation Infrastructure Considering Extreme Weather, Climate, and Sustainable Energy Policies
… the demand, costs, and emissions of a container freight shipping route from South America to the Port of Charleston, South Carolina. Ports and shipping routes play the most crucial role in the global supply chain, allowing people to maintain their standard of living. Once ashore, the delivery …
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Empty Railcar Repositioning Subject to Travel Time Uncertainty
The empty railcars repositioning strategy generates no income but is crucial for a good service quality, it should then satisfy two main objectives: fullling the customer demand and generating as little expense as possible. Moreover, because of breakdown or heavy traffic, variation on travel times …