Civil and Environmental Engineering Commons^™

Increased Span Length For The Mgs Long-Span Guardrail System, Nicholas A. Weiland, Ronald K. Faller, Robert W. Bielenberg, John D. Reid

Nebraska Department of Transportation: Research Reports

No abstract provided.

Railway/Highway At-Grade Crossing Surface Management: An Overview, Brett R. Malloy, Jerry G. Rose

Kentucky Transportation Center Research Report

This report draws on data from around the United States to describe the features of a successful railway/highway at-grade crossing management program; it emphasizes the highway/trackbed structures and crossing surfaces. Developing a structurally adequate crossing system is imperative, as this will produce a smooth surface and a stable highway/trackbed that prolongs crossings’ lifespans while keeping maintenance costs low and minimizing the number of disruptions encountered by highway and railway traffic. An overview of the guidance issued by several transportation agencies and organizations to facilitate the design and construction of railway/highway at-grade crossings is included here. Equally important to developing a …

Effect Of Enhanced Trackbed Support On Railway/Highway At-Grade Crossing Performance, Jerry G. Rose, Brett R. Malloy

Kentucky Transportation Center Research Report

This report documents the long-term performance of 89 railway/highway at-grade crossings in Kentucky and adjacent states that contain asphalt underlayment underneath the ballast. Asphalt underlayment increases load carrying capacity for trains and highway vehicles while enhancing the support structure’s waterproofing and confinement. The asphalt underlayment crossings studied were installed at sites that had historically exhibited poor performance and short service lives. Most of the crossing sites evaluated were 10-15 years old; however, their ages ranged up to 30 years. All of the crossings investigated have shown excellent performance since the installation of asphalt underlayments. No crossing failures, such as excessive …

Exact Controllability Of The Lazer-Mckenna Suspension Bridge Equation, Lanxuan Yu

UNLV Theses, Dissertations, Professional Papers, and Capstones

It is well known that suspension bridges may display certain oscillations under external aerodynamic forces. Since the collapse of the Tacoma Narrows suspension bridge in 1940, suspension bridge models have been studied by many researchers. Based upon the fundamental nonlinearity in suspension bridges that the stays connecting the supporting cables and the roadbed resist expansion, but do not resist compression, new models describing oscillations in suspension bridges have been developed by Lazer and McKenna [Lazer and McKenna (1990)]. Except for a paper by Leiva [Leiva (2005)], there have been very few work on controls of the Lazer-McKenna suspension bridge models …

Methods To Expedite And Streamline Utility Relocations For Road Projects, Roy Sturgill, Timothy R.B. Taylor, Seyedmahdi Ghorashinezhad, Jiwen Zhang

Kentucky Transportation Center Research Report

Executive Summary This report describes best practices and tools to streamline and expedite utility relocations when they are required as part of road construction projects. As part of this effort, a research team from the Kentucky Transportation Center (KTC) conducted extensive qualitative research that involved mapping current practices at the Kentucky Transportation Cabinet (KYTC) and reviewing utility manuals from KYTC and other state transportation agencies. The KTC research team also conducted in-depth interviews with KYTC engineers and staff as well as representatives from utility companies (UCs). Based on the data from these investigations, KTC developed a number of recommendations to …

Recommendations For Kytc’S Railway/Highway At-Grade Crossing Surface Management Practices, Brett R. Malloy, Jerry G. Rose, Macy L. Purcell

Kentucky Transportation Center Research Report

An ideal Railway/Highway At-Grade Crossing Management program involves selecting costeffective practices when designing new crossings and rehabilitating existing crossings. This report outlines two strategies to enhance KYTC’s existing program. First, it describes a process that uses decision-option diagrams to optimize the assessment and implementation of engineering solutions in order to restore desired smoothness, minimize settlement in the postconstruction phase, and foster acceptable long-term performance of crossings following their rehabilitation. Decision-option diagrams rely on assessments that are site-specific and based on historical performance, the present observed performance and condition, and the measureable parameters specific to particular crossings. To supplement this process, …

Railway/Highway At-Grade Crossing Surface Rehabilitation Manual: Recommendations And Guides, Brett R. Malloy, Macy L. Purcell, Jerry G. Rose

Kentucky Transportation Center Research Report

This Railway/Highway At-Grade Crossing Surface Rehabilitation Manual offers guidance to engineers and project planners for designing, constructing, and managing railway/highway crossing rehabilitation projects. The manual includes information on pre-project administration, project execution, and post-project management and oversight. Suggestions are provided for determining the most cost-effective rehabilitation procedure, techniques to insure the appropriate installation procedures are followed onsite, and instructions for post-project administration and inspection procedures. The primary goal of this manual is to aid with the implementation of a crossing rehabilitation program; all of its guidance underscores the importance of achieving costeffective solutions through the use of best practices to …

The Effect Of Infrastructure Changes On Railway Operations., Martin J.R. Schmidt 1966-

Electronic Theses and Dissertations

This paper makes use of standard simulation programs in combination with the tools of applied statistics to simulate railway operations. The purpose of the use of this tool is to evaluate and compare different possible kinds of railway infrastructure, like different types of signaling procedures, different network configuration or operational procedures. A railway system is a logistic network and because of the demand for improved railway operation, much work has been undertaken lately in this scientific field. However the author postulates the hypothesis based on a literature review that in a lot of these works there is a lack of …

Inland Waterway Operational Model & Simulation Along The Ohio River, Doug Kreis, Roy E. Sturgill, Brian K. Howell, Christopher W. Van Dyke, D. Stephen Voss

Kentucky Transportation Center Research Report

The inland waterway system of the U.S. is a vital network for transporting key goods and commodities from the point of production to manufacturers and consumers. Shipping materials via the inland waterways is arguably the most economical and environmentally friendly option (compared to hauling freight by trains or railways). Despite the advantages the inland waterways enjoys over competing modes, key infrastructure – such as locks and dams, which help to control water levels on a number of rivers and make navigation possible – is declining. Limited funds have been allocated to make the necessary repairs to lock and dam facilities. …

Audit Template For Inland Port Sustainability, Doug Kreis, Sarah Mccormack, Christopher Van Dyke, Bryan Gibson

Kentucky Transportation Center Research Report

This report serves as an assessment of port sustainability and its potential applications for the inland river ports of Kentucky and the surrounding region. The report discusses and defines sustainability, both generally as it relates to business and industry and specifically as it relates to the port industry. Given the unique nature of the inland port industry, the report reviews lessons learned from 11 port site visits conducted by Kentucky Transportation Center in 2012, primarily at major U.S. coastal ports but also representative inland ports. KTC’s analysis identifies the sustainability challenges facing various domestic and international ports, and what policy …

Inland Waterways Funding Mechanisms Synthesis, Doug Kreis, Bryan Gibson, Christopher W. Van Dyke, Candice Y. Wallace, Sarah M. Mccormack

Kentucky Transportation Center Research Report

The inland waterway system is a vital part of the nation’s multi-modal freight network. Although less visible than other modes, inland waterways allow shippers to transport bulk commodities in a relatively cheap and environmentally-friendly method. To ensure this transportation mode remains a feasible option and accommodates growth, it must continue to be safe, efficient, and functional. This synthesis provides comprehensive perspective on the financial prospects of the inland waterways system. It analyzes current funding levels, along with proposed funding changes and reforms.

Financial support for the inland waterways system comes from the Inland Waterways Trust Fund (IWTF). Historical data gathered …

Effects Of Mix Design Using Chloride-Based Accelerator On Concrete Pavement Cracking Potential, Daniel Aaron Buidens

USF Tampa Graduate Theses and Dissertations

Cracked pavement slabs lead to uncomfortable and eventual unsafe driving conditions for motorists. Replacement of cracked pavement slabs can interrupt traffic flow in the form of lane closures. In Florida, the traffic demands are high and pavement repairs need to be carried out swiftly typically using concrete with high cement contents and accelerators to create rapid setting and strength gain. The concrete used in these pavement replacements is usually accompanied by a high temperature rise, making the replaced slabs susceptible to cracking. Cracking is a result of developed tensile stresses in the concrete, which exceed the concrete's tensile strength capacity. …

Wiscasset Municipal Airport Master Plan Update, Stantec

Maine Town Documents

Airport Master Plan Update. AIP No. 3-23-0049-15-2010. October 2014.

Part I: Section 1 - Section 7
Part II: Appendix 1 Glossary - Appendix 3 Obstruction Analysis
Part III: Appendix 4 Alternative Plans

Integrating Pro-Environmental Behavior With Transportation Network Modeling: User And System Level Strategies, Implementation, And Evaluation, Husain M. Abdul Aziz

Open Access Dissertations

Personal transport is a leading contributor to fossil fuel consumption and greenhouse (GHG) emissions in the U.S. The U.S. Energy Information Administration (EIA) reports that light-duty vehicles (LDV) are responsible for 61\% of all transportation related energy consumption in 2012, which is equivalent to 8.4 million barrels of oil (fossil fuel) per day. The carbon content in fossil fuels is the primary source of GHG emissions that links to the challenge associated with climate change. Evidently, it is high time to develop actionable and innovative strategies to reduce fuel consumption and GHG emissions from the road transportation networks. This dissertation …

Investigation Of Closure Pour Elimination For Phased Construction Of Steel Girder Bridges, Terri R. Norton, Armando Shane

Nebraska Department of Transportation: Research Reports

No abstract provided.

Caracterización De Las Condiciones De Movilidad En La Zona Centro De Ciudades Medias Caso Yopal, Luisa Maria Fernanda Gomez Rojas, Jhon Edison Rodriguez Martinez

Ingeniería Civil

No abstract provided.

Kentucky Traffic Collision Facts 2013, Kentucky Transportation Center, Kentucky State Police

Kentucky Transportation Center Research Report

KENTUCKY’S TRAFFIC COLLISION FACTS report for 2013 is based on collision reports submitted to the Kentucky State Police Records Branch. As required by Kentucky Revised Statutes 189.635, “every law enforcement agency whose officers investigate a vehicle accident of which a report must be made…shall file a report of the accident…within ten days after investigation of the accident upon forms supplied by the bureau.” The stated purpose of this requirement is to utilize data on traffic collisions for such purposes as will improve the traffic safety program in the Commonwealth. Data contained in this report are based solely on the observations …

Agricultural Industry Advanced Vehicle Technology: Benchmark Study For Reduction In Petroleum Use, Roger M. Hoy, Rodney Rohrer, Adam Liska, Joe D. Luck, Loren Isom, Deepak R. Keshwani

Adam Liska Papers

Diesel use on farms in the United States has remained relatively constant since 1985, decreasing slightly in 2009, which may be attributed to price increases and the economic recession (Figure 1). During this time, the United States’ harvested area also has remained relatively constant at roughly 300 million acres. In 2010, farm diesel use was 5.4% of the total United States diesel use. Crops accounting for an estimated 65% of United States farm diesel use include corn, soybean, wheat, hay, and alfalfa, respectively, based on harvested crop area and a recent analysis of estimated fuel use by crop (Figure 2).1 …

Evaluating The Impact Of Deck Removal Method On The Performance Of Nu Girders, George Morcous

Nebraska Department of Transportation: Research Reports

No abstract provided.

Analysis Of Traffic Crash Data In Kentucky (2009-2013), Eric R. Green, Kenneth R. Agent, Jerry G. Pigman, Michael A. Fields

Kentucky Transportation Center Research Report

This report documents an analysis of traffic crash data in Kentucky for the years of 2009 through 2013. A primary objective of this study was to determine average crash statistics for Kentucky highways. Rates were calculated for various types of highways and for counties and cities. Difference criteria were used for exposure.

Average and critical numbers and rates of crashes were calculated for various types of high ways in rural and urban areas. These rates used crashes identified on highways where traffic volumes were available. Improved methods of identifying crash locations have resulted in higher rates for the last couple …

Roadway Contributing Factors In Traffic Crashes, Kenneth R. Agent

Kentucky Transportation Center Research Report

This project involved an evaluation of the codes which relate to roadway contributing factors. This included a review of relevant codes used in other states. Crashes with related codes were summarized and analyzed. A sample of crash sites was inspected to evaluate the accuracy and consistency of the data being evaluated.

The results of the study are recommendations for a coding format to enable accurate and consistent data concerning the roadway as it affected the crash as well as examples of areas of training to improve the accuracy and consistency of the data.

Recommendations relating to coding of the police …

Vessel Traffic Service (Vts): A Maritime Information Service Or Traffic Control System? Understanding Everyday Performance And Resilience In A Socio-Technical System Under Change, Gesa Praetorius

Gesa Praetorius

Vessel Traffic Service (VTS) is a shore-side maritime assistance service that supports bridge teams in their safe navigation of port approaches and other areas that present navigational difficulties. The VTS is implemented in national waters and provides vessels with information through transmissions and broadcasts on Very High Frequency (VHF) radio. With a continued growth in the number, size and cargo volumes of merchant vessels, the role of the VTS has recently become a matter of discussion, and it has been argued that changes, such as implementing an aviation-like control system, would be of an enormous benefit for stakeholders and guarantee …

Research On The Maritime Safety In Qiongzhou Strait, Jiaxuan Li

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Application Of Uav In Maritime Search And Rescue Activities, Xiaojie Wang

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Study On Safety Issues For Lng Tank Container Carried By Sea In China, Yuanjing Xiang

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Research On Ship's Routeing And Reporting System Of The Malacca And Singapore, Xianwei Zhang

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Research On Correlation Effects Between Tianjin Port And Its Inland Ports Based On Modified Gravity Model, Yayun Zhao

World Maritime University Dissertations

No abstract provided.

Evaluation System Of The Greenport Degree Based On The Fuzzy Logic Theory, Xingchen Yang

World Maritime University Dissertations

No abstract provided.

Predicting Bicyclist Comfort In Protected Bike Lanes, Nicholas Mark-Andrew Foster

Dissertations and Theses

Long popular in northern Europe, protected bike lanes, also known as "cycle tracks" or "separated bike lanes," are seeing increased interest in the United States. One of the primary benefits of protected bike lanes is that they may provide a higher level of comfort than a standard bike lane that is only delineated by an inches-wide painted stripe. Several methods exist for quantifying the quality of service provided by a roadway for a bicyclist; however, many of these models do not consider protected bike lanes and of those that do, none are based on empirical data from the US. This …

Mitigation Of Alkali-Silica Reaction (Asr) In An Interstate Median Barrier, Richard Albert Deschenes

Graduate Theses and Dissertations

In 2012 it was discovered that roughly 4 miles of interstate median barrier along Interstate 540 had rapidly deteriorated. After the initial inspection, a sample was submitted for analysis, and found to contain evidence of alkali-silica reaction (ASR). A research program was implemented with the goal of determining the cause of ASR and developing a program for mitigating the ongoing deterioration. The median barrier had not deteriorated equally throughout the 4 miles, and the level of damage varied considerable throughout the length. A visual inspection of the median barrier was conducted and the median barrier was divided into sections based …