Transportation Engineering Commons^™

Investigating The Effects Of Rainfall On Traffic Operations On Florida Freeways, Lucia Andrew

UNF Graduate Theses and Dissertations

Rainfall affects the performance of traffic operations and endangers safety. A common and conventional method (rain gauges) for rainfall measurements mostly provide precipitation records in hourly and 15-minute intervals. However, reliability, continuity, and wide area coverage pose challenges with this data collection method. There is also a greater likelihood for data misrepresentation in areas where short duration rainfall is predominant, i.e., reported values may not reflect the actual equivalent rainfall intensity during subintervals over the entire reporting period. With recent weather and climate patterns increasing in severity, there is a need for a more effective and reliable way of measuring …

Evaluating Mobility And Safety Benefits Of Freeway Service Patrols: A Case Study Of Florida's Road Rangers, Jimoku H. Salum

UNF Graduate Theses and Dissertations

The Florida’s Road Rangers monitor the freeways for incidents to minimize their adverse impacts on traffic. The objectives of this study were to evaluate the extent to which Road Rangers reduce incident clearance duration (ICD), incident-induced traffic delays (IITDs) and secondary crashes (SCs).

Since ICD distributions are often right-skewed, the study applied quantile regression to relate ICD to influencing factors. Data skewed to the right is usually a result of lower bounds in a data set being extremely low relative to the rest of the data. Data from 28,000 incidents that occurred on freeways in Jacksonville, Florida were analyzed. Of …

Marine Quay Crane Scheduling Using A Combined Modified Genetic Algorithm And Priority Rules Approach, V. H. Nguyen, D. T. Nguyen

Civil & Environmental Engineering Faculty Publications

Quay crane scheduling problem (QCSP) is the problem of the allocation of quay cranes to handle the unloading and loading of containers at seaport container terminals and defining the service sequence of vessel bays of each quay crane. The treatment of crane interference constraints and the increased in vessel size make the problem difficult to solve. Due to the growing interest in applied research for this problem, many researchers have used different algorithms and methods to obtain some solutions. This paper will propose a modified genetic algorithm combined with priority rules to deal with it. The advantage of the proposed …

An Analysis Of Hydroacoustic Transmission Loss Associated With Marine Pile Driving, Jonathan Paul Berube

UNF Graduate Theses and Dissertations

There has been a growing concern in recent years about the effects of anthropogenic noise due to marine pile driving on underwater wildlife. Current guidelines for mitigating hydroacoustic effects associated with these events are based upon relatively simple transmission loss formulations. The advantage to these guidelines is that computing transmission loss using their prescribed methods is not labor intensive, but their disadvantage is that they may not take all variables into account. Because of this, it may be possible to improve transmission loss computations. To better-characterize marine pile driving sound transmission loss, a unique in-water instrumentation system was developed. This …

Simulation Exploration Of The Potential Of Connected Vehicles In Mitigating Secondary Crashes, Mike Alvin Soloka

UNF Graduate Theses and Dissertations

Secondary crashes (SCs) on freeways are a major concern for traffic incident management systems. Studies have shown that their occurrence is significant and can lead to deterioration of traffic flow conditions on freeways in addition to injury and fatalities, albeit their magnitudes are relatively low when compared to primary crashes. Due to the limited nature of crash data in analyzing freeway SCs, surrogate measures provide an alternative for safety analysis for freeway analysis using conflict analysis. Connected Vehicles (CVs) have seen compelling technological advancements since the concept was introduced in the 1990s. In recent years, CVs have emerged as a …

The Short-Term Effects Of Interstate Highways On Small Rural Communities: A Case Study Of I-39, I-49 And I-72, 1990 To 2000, John Paul Metelko

Graduate Research Theses & Dissertations

The presence of interstate highways in rural areas improves access to nearby rural

communities and changes those communities’ spheres of influence. Research into

understanding how improved access from interstate highways affects rural communities

is needed. This case study was designed to investigate how rural communities changed

on the basis of population, vacancy, median home value, and median contract rent in the

short term after an interstate highway was completed nearby in the early 1990s.

The communities included in this study are incorporated cities, towns, villages

and census-designated places in non-metropolitan counties with at least one incorporated

city, town, village and …

Synthesis Of Fault Traces In Se Louisiana Relative To Infrastructure, David Culpepper, Elizabeth Chinn Mcdade, Nancye Dawers, Mark Kulp, Rui Zhang

Publications

Geological faulting has been implicated as a contributor to subsidence, coastal land-loss and submergence of marshlands in southern Louisiana. This report reviews whether fault motion, either by slow creep or more sudden slip, can cause deformation of engineered structures resulting in increased infrastructure maintenance and repair costs. The impact of surface, or near-surface, geologic faulting on critical infrastructure is insufficiently documented in southeastern Louisiana, but the state has a vast amount of energy-sector subsurface data that to date has been under-utilized for transportation and other near-surface engineering applications. Recent and on-going work by research groups at Tulane University, University of …

Evaluating The Performance Of Cooperative Merging Assistance System For Aging Drivers, Flavius Matata

UNF Graduate Theses and Dissertations

Freeway merging maneuvers demand considerable attention by drivers and are among the more complex operations drivers must perform on freeways. Aging drivers, a growing population in the United States, face added challenges when merging. This study utilized Vissim models created in a previous study that modeled the behavior of aging drivers during freeway merging. An algorithm for Cooperative Merging Assistance System (CMAS) that utilizes Connected Vehicle (CV) technology was developed in this study. The Vissim models were created for two interchanges on I-75 in Fort Myers, Florida, each with different geometric characteristics. Acceleration lane lengths of 1000ft and 1500ft were …

The Use Of Real-Time Connected Vehicles And Here Data In Developing An Automated Freeway Incident Detection Algorithm, Hendry Nyanza Imani

UNF Graduate Theses and Dissertations

Traffic incidents cause severe problems on roadways. About 6.3 million highway crashes are reported annually only in the United States, among which more than 32,000 are fatal crashes. Reducing the risk of traffic incidents is key to effective traffic incident management (TIM). Quick detection of unexpected traffic incidents on roadways contribute to quick clearance and hence improve safety. Existing techniques for the detection of freeway incidents are not reliable.

This study focuses on exploring the potential of emerging connected vehicles (CV) technology in automated freeway incident detection in the mixed traffic environment. The study aims at developing an automated freeway …

The Operational And Safety Effects Of Heavy Duty Vehicles Platooning, Ahmed Alzahrani

UNF Graduate Theses and Dissertations

Abstract

Although researchers have studied the effects of platooning, most of the work done so far has focused on fuel consumption. There are a few studies that have targeted the impact of platooning on the highway operations and safety. This thesis focuses on the impact of heavy-duty vehicles (HDVs) platooning on highway characteristics. Specifically, this study aims at evaluating the effects of platooning of HDVs on capacity, safety, and CO₂ emissions.

This study is based on a hypothetical model that was created using the VISSIM software. VISSIM is a powerful simulation software designed to mimic the field traffic flow …

17-06 Public Vs Private Transportation Network Accessibility And Maternal-Infant Health Outcomes Across The Urban-Rural Boundary In Kalamazoo County, Michigan, Kathleen Baker

Transportation Research Center Reports

This project is twofold. The first part of the project deals specifically with the benefits of multimodal transportation modeling to understand community structure of public health access in a community. Maternal risk and infant outcomes are examined in Kalamazoo County, MI with respect to transportation network accessibility by public transit and private vehicle across the urban-rural continuum. Infants born to mothers just outside the urban core had a higher rate of poor outcomes. Maternal risk factors, by contrast, were associated with the accessible rural areas – areas outside the city proper, but within 30 minutes by car to services. When …

17-05 Effects Of Safe Bicycle Passing Laws On Drivers' Behavior And Bicyclists' Safety, Ron Van Houten, Jun-Seok Oh, Valerian Kwigizile, Ahmad Feizi, Majid Mastali

Transportation Research Center Reports

This report identifies the effect of passing distance laws on drivers’ behaviors and bicyclist’s safety during an overtaking maneuver. Using an instrumented bicycle and driver survey, the study measured bicycle passing in a naturalistic field experiment using video recording, an ultrasonic distance measuring device, and a LiDAR. In order to evaluate the effect of passing distance laws, the study examined jurisdictions with a three-foot passing law, with a five-foot passing law, and without a passing law. The experiment required a bicyclist to ride the instrumented bicycle in two-lane and three-lane roads to capture the distance between the bicycle and the …

Determination Of The Carrying Capability Of The Basis Of The Support Of A Contact Network Of The Railways And Vertical Force, Acting On The Base, K.S. Lesov, A.Kh. Mavlyanov, U.E. Ergashev

Journal of Tashkent Institute of Railway Engineers

The variant workings and calculations are executed on fixing of supports of contact trackage. Structural-technical decisions are Given on building of supports of contact network on earthen linen from sandy soils.

Model Of Search For The Placement Of Warehouses Of Tarnet-And-String Cargo Depending On The Cargo, Avaz Mirsultanovich Merganov

Journal of Tashkent Institute of Railway Engineers

To determine the feasibility of warehouses for packaged goods, it is necessary to understand the main volumes of cargo traffic, as well as to determine the optimal placement of these objects. These questions are developed and solved in this study

The Principles Of Calculation Of Preliminary-Stressed Reinforced Concrete Elements Of A Tripping Structure Under Dispersed Arming, Ch.S. Raupov, E.T. Yahshiyev, A.B. Karimova

Journal of Tashkent Institute of Railway Engineers

It is known that the basic principle of the use of reinforcement in the cross section of building structures is associated with ensuring their strength under the action of bending, tensile loads and impacts and the need to reinforce concrete elements that do not have sufficient structural strength for tension and bending. Depending on the purpose and features of the building structures, there are different types of reinforcement and ways to strengthen the elements.

Model Of Search For The Placement Of Warehouses Of Tarnet-And-String Cargo Depending On The Cargo, Avaz Mirsultanovich Merganov

Journal of Tashkent Institute of Railway Engineers

To determine the feasibility of warehouses for packaged goods, it is necessary to understand the main volumes of cargo traffic, as well as to determine the optimal placement of these objects. These questions are developed and solved in this study

Ways Of Rational Enhancements Of Passage And Transportable Ability On Railways Jsc "Uty", S.K. Xudayberganov, A.A. Svetashev, Sh.Sh. Kayumov

Journal of Tashkent Institute of Railway Engineers

The constant increase in the number of passenger trains has led to the fact that the semi-automatic blocking does not cope with the timely passing trains through the section. This article discusses the carrying capacity of railway section "N-B". The reserve capacity of this section is practically absent, the removal rate of passenger trains increases, which negatively affects the work of the entire railway section. Disposable and required carrying debility is determined. The method of increasing the capacity is chosen for each line depending on the given dimensions of movement, local conditions and technical and economic efficiency of different options.

Walker, Dorian (Fa 1240), Manuscripts & Folklife Archives

Folklife Archives Finding Aids

Finding aid only for Folklife Archives Project 1240. Collection of oral history interviews with railroad employees, locals, and historians recorded on Betacam and Betacam SP for Dorian Walker’s 1995 film Beauty of the Southland. Portions of the interviews were also used for a 2010 miniseries, All Aboard.

Development Of Anti-Icing Airfield Heated Pavement Systems Using Solar Energy, Joseph Daniels

Graduate Theses and Dissertations

This dissertation analyzes developing and assessing the viability of an anti-icing airfield heated pavement system using solar energy. This study includes two components, a field experimentation component and a numerical analysis component. Field experimentation investigates two systems: (1) an electrical heated pavement system with a photovoltaic energy system as its power source, and (2) a hydronic heated pavement system with a solar water-heating system as its heating source. The systems operate under an automated thermostat heating sequence for operation optimization and energy conservation. Study results found the solar systems capable of supplying enough energy to maintain pavement surface temperature above …

Early Life Flexural Performance And Behavior Of Reinforced Bcsa Concrete Beams, Gabriel Cook

Graduate Theses and Dissertations

Belitic calcium sulfoaluminate cement (BCSA) is a hydraulic, rapid setting alternative to ordinary portland cement (OPC) with reduced energy demands and CO2 emissions. BCSA cement has numerous current and potential applications including transportation repair and precast manufacturing. Currently, limited research exists regarding the structural performance of CSA cements, restricting its potential implementation. Thus, the purpose of this research is to provide insight into the flexural performance and behavior of reinforced BCSA concrete beams. Overall, BCSA concrete had similar cracking and loading behavior to the OPC beams, with increased moment capacity for compression controlled specimens. Furthermore, BCSA concrete showed increased tensile …