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Supporting Pavement Maintenance Decisions Of Low Volume Roads In Colorado Using Optimization Analysis And Artificial Intelligence Techniques
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Book Synopsis Supporting Pavement Maintenance Decisions of Low-volume Roads in Colorado Using Optimization Analysis and Artificial-intelligence Techniques by : Marwan Hafez
Download or read book Supporting Pavement Maintenance Decisions of Low-volume Roads in Colorado Using Optimization Analysis and Artificial-intelligence Techniques written by Marwan Hafez and published by . This book was released on 2020 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: States' Departments of Transportation (DOT) are trying to utilize the best practices of managing low-volume roads (LVRs) due to limited resources and declined transportation funding. Diverse maintenance practices and fluctuating budget allocations are noticed on LVRs which significantly impact the overall pavement performance. In this study, the optimal scheduling of maintenance strategies and effectiveness of different maintenance policies are investigated.
Book Synopsis Comprehensively Optimized Pavement Management System for Low-volume Paved Roads by : Marwan Hafez
Download or read book Comprehensively Optimized Pavement Management System for Low-volume Paved Roads written by Marwan Hafez and published by . This book was released on 2019 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: State Departments of Transportation (DOTs) are trying to utilize the best practices of managing low-volume roads (LVRs) due to limited resources and declined transportation funding. Diverse maintenance practices and fluctuating budget allocations are noticed on LVRs which significantly impact the overall pavement performance. In this study, the optimal scheduling of maintenance strategies and effectiveness of treatment options are investigated. Pavement maintenance decision making is supported by three approaches: subjective judgment of pavement engineers; historical data on past practice (i.e., historical pavement performance plots); and optimization-based procedures. The three approaches are integrated using a pavement management data of Colorado LVRs to provide guidelines and recommendations for Colorado DOT (CDOT) and other transportation agencies. The accumulated field experience of Colorado DOT’s pavement engineers is highlighted through a regional survey of practice. In addition, the effectiveness of low-cost treatments on the individual pavement distresses is evaluated using historical values of pavement condition indices. It was concluded that some surface treatments and recycling techniques are effective long-term treatments for fatigue, longitudinal, and transverse cracking. However, the effectiveness of these treatments depends mainly on the initial condition index. Then, an optimization analysis is conducted using genetic algorithms to provide cost-effective capital improvement plans statewide and for deteriorated LVRs with marginal pavement conditions. The large-scale optimization analysis is limited on LVRs for statewide maintenance planning. In this study, the developed optimization models have the ability to maximize the overall pavement condition of LVRs network considering an annual budget constraint. They can also minimize the maintenance costs to achieve desired performance targets by the end of the analysis period. It was concluded that most CDOT engineering regions do not have sufficient maintenance budgets to sustain the network-level pavement condition of LVRs. The results from optimization analysis provide more realistic solutions to define the budget needs on LVRs. Moreover, an effective decision-making process is achieved for each Colorado DOT’s engineering region using a machine-learning approach. Multiple treatment alternatives are proposed using artificial neural networks with pattern recognition algorithms. It was found that these approaches provide beneficial guidelines for managing LVRs in Colorado and nationwide. As a result of this study, transportation agencies can determine future budget needs, funding allocations, and treatment policies in order to demonstrate the best possible use of pavement management resources on LVRs.
Book Synopsis Best Practices to Support and Improve Pavement Management Systems for Low-volume Paved Roads by : Marwan Hafez
Download or read book Best Practices to Support and Improve Pavement Management Systems for Low-volume Paved Roads written by Marwan Hafez and published by . This book was released on 2018 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Colorado Department of Transportation (CDOT) has been trying to identify the most effective methods for managing low-volume roads (LVRs). These roads are facing multiple challenges including: reductions in maintenance budgets, impact of industrial activities, and potentially not receiving the most cost effective treatments. Considerable savings can be secured by implementing an effective and informed management system for all LVRs engineering issues, including: planning, design, and maintenance.
Book Synopsis Comprehensive Evaluation of Pavement Maintenance Activities Applied to Colorado Low-volume Paved Roads by : Marwan Hafez
Download or read book Comprehensive Evaluation of Pavement Maintenance Activities Applied to Colorado Low-volume Paved Roads written by Marwan Hafez and published by . This book was released on 2018 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Colorado Department of Transportation (CDOT) has been trying to identify the most effective methods for managing low-volume roads (LVRs). These roads are facing multiple challenges including: reductions in maintenance budgets, impact of industrial activities, and potentially not receiving the most cost effective treatments. Considerable savings can be secured by implementing an effective and informed management system for all LVRs engineering issues, including: planning, design, and maintenance.
Book Synopsis Pavement Management System for Low-volume Paved Roads in Wyoming by : Marwan Hafez
Download or read book Pavement Management System for Low-volume Paved Roads in Wyoming written by Marwan Hafez and published by . This book was released on 2015 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2014, Wyoming Technology Transfer Center/Local Technical Assistance Program (WYT2/LTAP) initiated a pavement management system (PMS) program for county roads in the State of Wyoming. Building a PMS for county roads provides assistant and defensible tools for legislatures to allocate appropriate funds to maintain county roads. In Wyoming, there are total 2,444 miles of county paved roads managed and maintained under the supervision of local governments and municipalities. More than 50% of county paved roads have an average daily traffic (ADT) less than 400 vehicles per day. These roads are considered as low-volume roads. There is no legal requirement to implement a typical pavement management system on county and local roads. However, the funding constraints for maintaining county roads increase the importance of implementing a pavement management system on the lower systems. The most important issue in managing county paved roads as low-volume roads is to define practices and polices applied within the available resources. This study investigates appropriate tools to better manage low-volume paved roads. The tools provide effective guidelines and statistical techniques to reduce the costs of collecting pavement condition data. Online surveys were disseminated for all experts and pavement managers who are involved in preserving low-volume paved roads in Colorado and nationwide. This study developed four surveys. The summaries of only two surveys were included in this thesis since the two other surveys are in progress. A feedback from TRB standing committee members and specialist engineers in Colorado Department of Transportation (CDOT) was analyzed. The most appropriate practices and recommended tools were developed for managing low-volume paved roads using effective strategies. These strategies help local governments in Wyoming manage their county paved roads in a cost-effective manners. The automated techniques used to collect pavement condition data are relatively expensive for local agencies. In addition, there are questions about the needs to collect pavement condition data annually since county roads have relatively low traffic volumes. In order to optimize the cost of data collection, this study evaluates the possibility of reducing the amount of pavement condition data collected in each survey. Reducing the amount of collected data provides missing values. This study applies multiple imputation analyses as an assistant tool to predict the uncollected data at the network level. Another objective of this study is to determine the most cost-effective pavement condition data collection frequencies. The study uses a historical PMS data of the State secondary highways in Wyoming as a case study. A comparison between different frequencies was developed. It was concluded that uncollected pavement condition indices can be predicted using initial/historical values. The imputation models, developed in this study, provided a good estimation of the uncollected pavement condition indices. Therefore, pavement condition data of low-volume paved roads is not recommended to be collected for the whole network annually. Instead, a less expensive sequence can be adopted where the data which is not collected can be predicted using multiple imputation models developed in this study.
Book Synopsis A Technical Review of the Colorado Department of Transportation's Pavement Management Activities by : Applied Pavement Technology, Inc
Download or read book A Technical Review of the Colorado Department of Transportation's Pavement Management Activities written by Applied Pavement Technology, Inc and published by . This book was released on 2004 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis הלכות גיטין לפי נוסח הגט של קושטא by :
Download or read book הלכות גיטין לפי נוסח הגט של קושטא written by and published by . This book was released on 1885 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Surface Design and Rehabilitation Guidelines for Low-volume Roads by :
Download or read book Surface Design and Rehabilitation Guidelines for Low-volume Roads written by and published by . This book was released on 1987 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual is for use by owners, managers, and engineers involved with the design, rehabilitation, and maintenance of surfacing for low-volume road networks. The considerations and constraints associated with the design process are discussed. These include drainage, geometrics, traffic, materials, surface characteristics, and shoulders. Design procedures especially for low-volume roads are given for both paved and aggregate surfaces. Paved surfaces include surface treatments, asphalt concrete, and portland cement concrete. Methods of maintaining and rehabilitating low-volume roads are also presented because of the importance of protecting the large investment in existing low-volume roads. Finally, a discussion of pavement management practices and the basics of pavement evaluation and performance is given so low-volume road agencies can begin to develop these useful tools.
Book Synopsis New Methods in Pavement Maintenance Strategy Selection by : Asma Thamir Ibraheem
Download or read book New Methods in Pavement Maintenance Strategy Selection written by Asma Thamir Ibraheem and published by LAP Lambert Academic Publishing. This book was released on 2012-07 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aimed to develop methods and tools for supporting maintenance management system for transportation. This is done by using Multicriteria Decision Making Process techniques. Also analytic hierarchy process (AHP) were applied to evaluate the techniques that are used for maintaining the road pavements. Software named AHPM (Analytic Hierarchy Process Model) was developed using MATLAB for flexible pavement. The first step in the AHP procedure is to decompose the decision problem into a hierarchy that consists of the most important elements of the decision problem. In developing a hierarchy identified the objective, factors and alternatives. The hierarchy model of a decision problem is the objective of the decision at the top level and then descends downwards lower level of decision factors until the level of attributes is reached. Each level is linked to the next higher level.
Book Synopsis Colorado Department of Highways Maintenance Performance and Safety Training Program by : Colorado. Division of Highways. Staff Maintenance Branch
Download or read book Colorado Department of Highways Maintenance Performance and Safety Training Program written by Colorado. Division of Highways. Staff Maintenance Branch and published by . This book was released on 1989* with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Full Depth Reclamation With Thin Surface Treatment for Low Volume Road Maintenance by : Harikrishnan Nair
Download or read book Full Depth Reclamation With Thin Surface Treatment for Low Volume Road Maintenance written by Harikrishnan Nair and published by . This book was released on 2021 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Virginia Department of Transportation (VDOT) maintains more than 100,500 lane-miles of pavement on the secondary network. Of this total, more than 95% of the lane-miles have an annual average daily traffic of less than 3,500 vehicles. Pavement recycling techniques (such as full depth reclamation [FDR] and cold in-place recycling) can be used to fix many underlying issues in an existing pavement and when combined with thin surfacings, where appropriate, can help VDOT maintain low volume roads and provide significant cost and environmental savings. However, VDOT has limited experience using pavement recycling techniques (especially FDR) where pavement is overlaid with thin surfacings. The purpose of this study was to document the performance baseline for a series of FDR sections having thin surfacings on lower volume traffic routes since the performance of these types of pavements was previously unknown. This study summarized the construction and initial performance of the FDR field projects on Rte. 602 in Surry County in VDOT’s Hampton Roads District and at Estates at Leeland in Spotsylvania County in VDOT’s Fredericksburg District; in addition, an inventory was conducted and the performance of past VDOT FDR projects on lower traffic routes was evaluated. The study found that the initial performance of the FDR project on Rte. 602 (having three thin surfacing treatments) and the FDR project at Estates at Leeland (having a 2-in asphalt concrete surface) was promising at early ages. However, the information gathered to date is not sufficient to make conclusions about the long-term performance of FDR with thin surfacings. In general, for the past FDR projects reviewed, based on visual surveys and data from VDOT’s Pavement Management System, FDR with 2 to 4 in of asphalt concrete surface performed well at ages of 7 to 13 years after construction. The study recommends continued performance assessment of the FDR sites surveyed in this study and additional field trials on the secondary network system using FDR with thin surfacings. Further research is also recommended to develop a framework to consider using performance data from VDOT’s Pavement Management System to predict the future conditions of pavement sections on the secondary network. Being able to identify those sections that could benefit from FDR treatments in the future would allow VDOT to allocate funding proactively for those sections based on early findings from this study.
Book Synopsis A Comprehensive Approach to Understand Gravel Road Performance by : Osama Abu Daoud
Download or read book A Comprehensive Approach to Understand Gravel Road Performance written by Osama Abu Daoud and published by . This book was released on 2022 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gravel roads form about 90% of the local roads network in Wyoming. These roads are managed and maintained by local agencies. Generally, local agencies have good experience in gravel roads maintenance execution, while their experience is limited in gravel roads management, maintenance planning, and budget allocation. Moreover, the limitation in available resources for these local agencies makes it more challenging to optimize gravel roads maintenance plans. Hence, the Wyoming Technology Transfer Center (WYT2/LTAP) is currently in the process of developing and producing a new holistic Gravel Roads Management System (GRMS). The proposed GRMS aims to provide local agencies with cutting-edge tools to assist them in managing and maintaining gravel roads under their authority. In addition, the developed tools will significantly enhance the budget allocation optimization by adapting advanced understanding of the gravel roads deterioration behavior. The main purpose of this research is to develop prediction tools and models for gravel roads deterioration using machine-learning techniques. This work started by developing an integrated database. Laramie County in Wyoming was chosen for the pilot study. An intensive effort was invested in collecting gravel roads condition data from the field and building the dataset. The adapted data collection procedure employed two methods: course survey, and smartphones data collection. Afterward, the collected data was analyzed using various techniques to fulfill the purpose of this research work. The employed techniques included: regression modeling, Inception V-3 model, image recognition, TensorFlow, binary logistic regression, random parameter, and Artificial Neural Network (ANN). These techniques will enhance the understanding of the gravel roads deterioration behavior, and the maintenance planning process. This enhancement will significantly improve the GRMS. As a result, the overall gravel road condition will be improved and the road user’s satisfaction will be increased. This research work was designed to be a baseline for employing machine learning and artificial intelligence in new GRMS. Adapting such techniques will produce cost-effective tools for both gravel roads data collection and data analysis. Hence, this research work started by developing an image classifier to rate gravel road corrugation condition using smartphones, the developed classifier is considered a low-cost tool with adequate accuracy. In addition, a sophisticated objective model was developed using the ANN techniques to predict the riding quality on gravel roads with eliminating the subjectivity. The deterioration behavior is an essential parameter in developing any GRMS. So, various gravel roads deterioration models were developed using ANN techniques to forecast the International Roughness Index (IRI). The developed IRI models considered the variation in traffic loading levels and land uses. However, some gravel road sections have special features that affect the deterioration behavior. Thus, the effect of horizontal and vertical curves on gravel roads conditions were studied and analyzed. Lastly, one of the main goals of maintaining gravel roads in adequate condition is enhancing the safety on these roads. Therefore, this research study invested an intensive effort in modeling the crash severities on these roads using mixed binary logistic regression.
Book Synopsis Civil Engineering Systems Analysis by : Luis Amador-Jimenez
Download or read book Civil Engineering Systems Analysis written by Luis Amador-Jimenez and published by CRC Press. This book was released on 2016-09-15 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook covers tools and applications in civil engineering systems. It begins by revising the mathematical and statistical background for the adequate formulation of civil engineering problems. Then it examines a series of topics required to understand infrastructure, facilities and transportation networks, and their planning, maintenance, upgrading and expansion. It covers problem definition, model formulation and decision making systems, including optimization, estimation and prediction. The applications deal with some of the challenges that civil engineers will typically encounter during their professional lives, ranging from municipal planning and infrastructure management to transportation analysis. The treatment of the topics is integral. Tools and examples from real life situations are combined to illustrate the use of methods and principles. Students will learn to understand a system, conceptualize a model, analyse it and make decisions or draw conclusions, just as practising engineers do. A final chapter introduces methods for expanding simple models, adding complexity and incorporating uncertainty. Instructors can chose to cover some of the material from the foundation chapters on mathematics and statistics or directly concentrate on the tools and applications.
Book Synopsis Neural Networks for Applied Sciences and Engineering by : Sandhya Samarasinghe
Download or read book Neural Networks for Applied Sciences and Engineering written by Sandhya Samarasinghe and published by CRC Press. This book was released on 2016-04-19 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to the exponentially increasing need to analyze vast amounts of data, Neural Networks for Applied Sciences and Engineering: From Fundamentals to Complex Pattern Recognition provides scientists with a simple but systematic introduction to neural networks. Beginning with an introductory discussion on the role of neural networks in
Book Synopsis Powering the Digital Economy: Opportunities and Risks of Artificial Intelligence in Finance by : El Bachir Boukherouaa
Download or read book Powering the Digital Economy: Opportunities and Risks of Artificial Intelligence in Finance written by El Bachir Boukherouaa and published by International Monetary Fund. This book was released on 2021-10-22 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper discusses the impact of the rapid adoption of artificial intelligence (AI) and machine learning (ML) in the financial sector. It highlights the benefits these technologies bring in terms of financial deepening and efficiency, while raising concerns about its potential in widening the digital divide between advanced and developing economies. The paper advances the discussion on the impact of this technology by distilling and categorizing the unique risks that it could pose to the integrity and stability of the financial system, policy challenges, and potential regulatory approaches. The evolving nature of this technology and its application in finance means that the full extent of its strengths and weaknesses is yet to be fully understood. Given the risk of unexpected pitfalls, countries will need to strengthen prudential oversight.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Artificial Intelligence Abstracts by :
Download or read book Artificial Intelligence Abstracts written by and published by . This book was released on 1989 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
