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A Comprehensive Severity Analysis Of Large Vehicle Crashes, Haluk Laman 2012 University of Central Florida

A Comprehensive Severity Analysis Of Large Vehicle Crashes, Haluk Laman

Electronic Theses and Dissertations

The goal of this thesis is to determine the contributing factors affecting severe traffic crashes (severe: incapacitating and fatal - non-severe: no injury, possible injury, and non-incapacitating), and in particular those factors influencing crashes involving large vehicles (heavy trucks, truck tractors, RVs, and buses). Florida Department of Highway Safety and Motor Vehicles (DHSMV) crash reports of 2008 have been used. The data included 352 fatalities and 9,838 injuries due to large vehicle crashes. Using the crashes involving large vehicles, a model comparison between binary logit model and a Chi-squared Automatic Interaction Detection (CHAID) decision tree model is provided. There were ...


Development Of Performance Measures And Revenue Projections For State Highway Transportation Systems, Dwight V. Denison, Christopher Jepsen, Bryan Gibson, Candice Wallace, Doug Kreis 2012 University of Kentucky

Development Of Performance Measures And Revenue Projections For State Highway Transportation Systems, Dwight V. Denison, Christopher Jepsen, Bryan Gibson, Candice Wallace, Doug Kreis

Kentucky Transportation Center Research Report

The purpose of this report is to develop a pilot model that demonstrates how metrics can be identified and reported in a “dashboard” format to be used to monitor the progress of a transportation system in efficiently meeting established priorities. An additional component of this research is to examine the revenue implications of a shift away from the traditional funding mechanism on the financial viability of state transportation systems.


Learning Lessons In Resilient Traffic Management: A Cross-Domain Study Of Vessel Traffic Service (Vts) And Air Traffic Control (Atc), Gesa Praetorius, Fulko van Westrenen, Deborah Mitchell, Erik Hollnagel 2011 University of Southern Denmark

Learning Lessons In Resilient Traffic Management: A Cross-Domain Study Of Vessel Traffic Service (Vts) And Air Traffic Control (Atc), Gesa Praetorius, Fulko Van Westrenen, Deborah Mitchell, Erik Hollnagel

Gesa Praetorius

Although younger than the maritime domain, aviation has had a huge impact on the system design and development within shipping. Stakeholders often look towards aviation to make shipping, and the way that traffic is handled and organised, safer, more efficient and more effective. Although legally not the same, Vessel Traffic Service (VTS) is frequently compared to Air Traffic Control (ATC). In this article the area of traffic management within the maritime and aviation domains is addressed from a Resilience Engineering perspective. Focus is placed on the arrival part of a mission. The comparison is based on information collected during two ...


What Is Your Intention? Communicating Routes In Electronic Nautical Charts, Thomas Porathe, Margareta Lützhöft, Gesa Praetorius 2011 Selected Works

What Is Your Intention? Communicating Routes In Electronic Nautical Charts, Thomas Porathe, Margareta Lützhöft, Gesa Praetorius

Gesa Praetorius

This paper reports preliminary findings on a simulator study looking for unintended consequences of letting ships exchange routs by use of the Electronic Chart Display and Information System (ECDIS). In a prototype system tested ship's intended routes are visible to other ships, and the Vessel Traffic Service (VTS) has the ability to send suggested routes to addressed ships. Preliminary findings show positive response from professional participants in the study although some concerns were also raised.


Safety Within The Vessel Traffic Service (Vts) Domain. Understanding The Role Of The Vts For Safety Within Maritime Traffic Management, Gesa Praetorius 2011 Selected Works

Safety Within The Vessel Traffic Service (Vts) Domain. Understanding The Role Of The Vts For Safety Within Maritime Traffic Management, Gesa Praetorius

Gesa Praetorius

Vessel Traffic Service (VTS) is a shore-sided service implemented to promote the safety of navigation, safety of life at sea, and the protection of the marine environment. Its purpose is to work for safe and fluent traffic movements within a determined area, a VTS area. VTS is provided by VTS operators, skilled experts that provide vessels with information and advice, and work for the overall traffic organisation. Although VTS is regulated on an international level there are differences in how the service is provided in between countries, and even VTS centres. This licentiate thesis focuses on understanding the role of ...


Evaluation Of The In-Service Safety Performance Of Safety-Shape And Vertical Concrete Barriers, Francisco Daniel Benicio de Albuquerque, Dean L. Sicking 2011 University of Nebraska - Lincoln

Evaluation Of The In-Service Safety Performance Of Safety-Shape And Vertical Concrete Barriers, Francisco Daniel Benicio De Albuquerque, Dean L. Sicking

Nebraska Department of Transportation Research Reports

No abstract provided.


Evaluation Of Ndor's Actuated Advance Warning Systems, Justice Appiah, Laurence Rilett, Zifeng Wu 2011 University of Nebraska–Lincoln

Evaluation Of Ndor's Actuated Advance Warning Systems, Justice Appiah, Laurence Rilett, Zifeng Wu

Nebraska Department of Transportation Research Reports

No abstract provided.


Phase I Development Of A Non-Proprietary, Four-Cable, High Tension Median Barrier, Mitchell J. Wiebelhaus, Dean L. Sicking, Ronald K. Faller, Karla A. Lechtenberg, John R. Rohde, Robert W. Bielenberg, Scott Rosenbaugh, Erin A. Johnson, John D. Reid 2011 University of Nebraska-Lincoln

Phase I Development Of A Non-Proprietary, Four-Cable, High Tension Median Barrier, Mitchell J. Wiebelhaus, Dean L. Sicking, Ronald K. Faller, Karla A. Lechtenberg, John R. Rohde, Robert W. Bielenberg, Scott Rosenbaugh, Erin A. Johnson, John D. Reid

Nebraska Department of Transportation Research Reports

No abstract provided.


The Effects Of Pedestrian Countdown Timers On Safety And Efficiency Of Operations At Signalized Inersections, Anuj Sharma, Jacob Schmitz 2011 University of Nebraska at Lincoln

The Effects Of Pedestrian Countdown Timers On Safety And Efficiency Of Operations At Signalized Inersections, Anuj Sharma, Jacob Schmitz

Nebraska Department of Transportation Research Reports

No abstract provided.


Development Of A State Of The Art Traffic Microsimulation Model For Nebraska, Justice Appiah, Bhaven Naik, Laurence Rilett, Yifeng Chen, Seung-Jun Kim 2011 University of Nebraska–Lincoln

Development Of A State Of The Art Traffic Microsimulation Model For Nebraska, Justice Appiah, Bhaven Naik, Laurence Rilett, Yifeng Chen, Seung-Jun Kim

Nebraska Department of Transportation Research Reports

No abstract provided.


Evaluation Of Long-Term Pavement Marking Performance, Eric R. Green, Kenneth R. Agent 2011 University of Kentucky

Evaluation Of Long-Term Pavement Marking Performance, Eric R. Green, Kenneth R. Agent

Kentucky Transportation Center Research Report

The objective of the investigation was to evaluate the useful life of pavement markings. The Manual on Uniform Traffic Control Devices (MUTCD) provides general guidelines for the application and installation of pavement markings. However, performance requirements for various types of pavement markings are not included. Retroreflectivity data were collected throughout Kentucky on various longitudinal pavement markings using mobile and manual techniques. Data were collected on one-year, two-year and three-year-old lines. The retroreflectivity levels were analyzed and the several recommendations were made. Minimum levels of retroreflectivity should be set for determining what roads to restripe annually. These values should be lower ...


Integrated Planning For Rural Rail Transportation, Jeffrey Cohan Gwaltney 2011 University of Arkansas, Fayetteville

Integrated Planning For Rural Rail Transportation, Jeffrey Cohan Gwaltney

Theses and Dissertations

Population growth in rural areas has led to new interest in rail transportation. Planning a passenger rail system involves numerous difficult decisions, most representing a trade-off between customer service and cost. In this work, we attempt to integrate many of these planning decisions. We consider strategic decisions such as station location and vehicle procurement, as well as tactical issues that include vehicle scheduling. Our integrated model exploits the linear network structure that best suits many rural American communities, including Northwest Arkansas. Due to the intractability of the integrated rail planning problem, we have developed a customized heuristic approach to solve ...


Influence Of Recycled Asphalt Shingles On Asphalt Binder Content, Mixture Stiffness, And Laboratory Rutting Performance, Joshua David King 2011 University of Arkansas, Fayetteville

Influence Of Recycled Asphalt Shingles On Asphalt Binder Content, Mixture Stiffness, And Laboratory Rutting Performance, Joshua David King

Theses and Dissertations

Recycled asphalt shingles (RAS) is a technology in which pavement costs can be reduced significantly and pavement properties may be enhanced. Also, incorporating shingles into pavements reduces the impacts of waste shingles in landfills, preserving our environment. However, for this new technology to be practical for implementation, a better understanding of how the ground shingles affect the properties of the asphalt is necessary. The purpose of this research was to examine the effects of recycled asphalt shingles on asphalt binder content, mixture stiffness, and laboratory rutting performance. For this project, shingles were added to hot mix asphalt mixtures at 2 ...


Development Of Alternative Wood-Post Mgs Approach Guardrail Transition, Scott K. Rosenbaugh, Kevin D. Schrum, Ronald K. Faller, Karla A. Lechtenberg, Dean L. Sicking, John D. Reid 2011 University of Nebraska–Lincoln

Development Of Alternative Wood-Post Mgs Approach Guardrail Transition, Scott K. Rosenbaugh, Kevin D. Schrum, Ronald K. Faller, Karla A. Lechtenberg, Dean L. Sicking, John D. Reid

Nebraska Department of Transportation Research Reports

No abstract provided.


Future Flooding Impacts On Transportation Infrastructure And Traffic Patterns Resulting From Climate Change, Heejun Chang, Martin Lafrenz, Il-Won Jung, Miguel A. Figliozzi, Rolando Melgoza, David Ruelas, Deena Platman, Cindy Pederson 2011 Portland State University

Future Flooding Impacts On Transportation Infrastructure And Traffic Patterns Resulting From Climate Change, Heejun Chang, Martin Lafrenz, Il-Won Jung, Miguel A. Figliozzi, Rolando Melgoza, David Ruelas, Deena Platman, Cindy Pederson

Geography Faculty Publications and Presentations

This study investigated potential impacts of climate change on travel disruption resulting from road closures in two urban watersheds in the Portland metropolitan area. We used ensemble climate change scenarios, a hydrologic model, stream channel survey, a hydraulic model, and a travel forecast model to develop an integrated impact assessment method. High-resolution climate change scenarios are based on the combinations of two emission scenarios and eight general circulation models. The Precipitation-Runoff Modeling System was calibrated and validated for the period 1988-2006, and simulated for determining the probability of floods from 2020-2049. We surveyed stream cross sections at five road crossings ...


Refining Greenstep: Impacts Of Vehicle Technologies And Its/Operational Improvements On Travel Speed And Fuel Consumption Curves, Kelly Clifton, Alexander Y. Bigazzi 2011 Portland State University

Refining Greenstep: Impacts Of Vehicle Technologies And Its/Operational Improvements On Travel Speed And Fuel Consumption Curves, Kelly Clifton, Alexander Y. Bigazzi

Civil and Environmental Engineering Faculty Publications and Presentations

This report describes analysis undertaken to establish a method for incorporating traffic operations and ITS strategies into the GreenSTEP model. We first discuss operations impacts on fuel economy and delay from the literature. Then, an investigation of delay adjustments in GreenSTEP shows that different methods of representing delay changes lead to similar (and small) impacts on fuel economy. From this result we establish average speed adjustment by congestion level as the preferred method for incorporating delay effects from operations improvements. An investigation of aggregate traffic operations impacts produces estimates of base speeds without operations improvements, maximum speeds with full operational ...


States’ Support Of Non-Highway Modes Of Transportation: Investigation And Synthesis, Chuck Knowles, Candice Y. Wallace, Benjamin L. Blandford, Timothy J. Brock, Andrew Martin 2011 University of Kentucky

States’ Support Of Non-Highway Modes Of Transportation: Investigation And Synthesis, Chuck Knowles, Candice Y. Wallace, Benjamin L. Blandford, Timothy J. Brock, Andrew Martin

Kentucky Transportation Center Research Report

The objective of this study was to determine how Kentucky and other selected states support and assist non-highway transportation modes and to identify leading and innovative initiatives. For the purposes of this study, the non-highway modes are aviation, public transportation, rail, and waterways. This summary will briefly discuss the rationale, objectives, and methodology for this study. It also provides an overview of the outcomes of the study and the modal matrices.


The Relationship Between Vmt And Economic Activity, B. Starr McMullen, Nathan Eckstein 2011 Oregon State University

The Relationship Between Vmt And Economic Activity, B. Starr Mcmullen, Nathan Eckstein

TREC Final Reports

Vehicle miles traveled (VMT) in the U.S. have exhibited an upward trend over time similar to that observed for gross domestic product (GDP) and personal income (PI). While conventional wisdom suggests that economic growth leads to more driving and thus higher VMT, it is theoretically possible that the causation could also be the other way around. If causation is from VMT to GDP, then legislation such as the Federal Surface Transportation Policy and Planning Act of 2009’s directive to annually reduce national per capita VMT could potentially have an adverse impact on overall economic activity.

This study uses ...


Guidelines For Road Diet Conversions, Nikiforos Stamatiadis, Adam Kirk, Chen Wang, Andrea Cull, Nithin Agarwal 2011 University of Kentucky

Guidelines For Road Diet Conversions, Nikiforos Stamatiadis, Adam Kirk, Chen Wang, Andrea Cull, Nithin Agarwal

Kentucky Transportation Center Research Report

The purpose of this report is to document the development of the guidelines for the road diet conversions prepared for the Kentucky Transportation Cabinet. The guidelines consider operational and safety aspects of the conversions to assist in the preliminary determination of whether a road diet conversion is appropriate for a given roadway segment. The guidelines provide suggested cross section designs, transition to and from the road diet section and a flow chart for determining the appropriate actions.


Model For Predicting The Impact Upon Economic Development Resulting From Highway Improvement Projects, Eric Thompson, Kanou Comlavi, Mallory Dimmit 2011 University of Nebraska-Lincoln

Model For Predicting The Impact Upon Economic Development Resulting From Highway Improvement Projects, Eric Thompson, Kanou Comlavi, Mallory Dimmit

Nebraska Department of Transportation Research Reports

The Nebraska Department of Roads (NDOR) has an interest in integrating state economic development impact as another factor in prioritizing transportation investments. Such efforts require the development of a comprehensive model that can be used to estimate a consistent final measure of economic development impact that can be readily integrated into existing prioritization formulas. This report summarizes the efforts of the University of Nebraska-Lincoln Bureau of Business Research (UNL-BBR) to develop such a model, by measuring the impact of expressway, viaduct, and other major investments projects around the state. Specifically, UNL-BBR developed an economic model to predict the economic impact ...


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