Exploring Data Quality Of Weigh In Motion Systems

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Exploring Data Quality of Weigh-In-Motion Systems

Author :
Publisher :
ISBN 13 :
Total Pages : 151 pages
Book Rating : 4.:/5 (913 download)

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Book Synopsis Exploring Data Quality of Weigh-In-Motion Systems by :

Download or read book Exploring Data Quality of Weigh-In-Motion Systems written by and published by . This book was released on 2013 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research focuses on the data quality control methods for evaluating the performance of Weigh-In-Motion (WIM) systems on Oregon highways. This research identifies and develops a new methodology and algorithm to explore the accuracy of each station's weight and spacing data at a corridor level, and further implements the Statistical Process Control (SPC) method, finite mixture model, axle spacing error rating method, and data flag method in published research to examine the soundness of WIM systems. This research employs the historical WIM data to analyze sensor health and compares the evaluation results of the methods. The results suggest the new triangulation method identified most possible WIM malfunctions that other methods sensed, and this method unprecedentedly monitors the process behavior with controls of time and meteorological variables. The SPC method appeared superior in differentiating between sensor noises and sensor errors or drifts, but it drew wrong conclusions when accurate WIM data reference was absent. The axle spacing error rating method cannot check the essential weight data in special cases, but reliable loop sensor evaluation results were arrived at by employing this multiple linear regression model. The results of the data flag method and the finite mixed model results were not accurate, thus they could be used as additional tools to complement the data quality evaluation results. Overall, these data quality analysis results are the valuable sources for examining the early detection of system malfunctions, sensor drift, etc., and allow the WIM operators to correct the situation on time before large amounts of measurement are lost.

Traffic Data Quality Verification and Sensor Calibration for Weigh-in-motion (WIM) Systems

Author : Chen-Fu Liao
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Traffic Data Quality Verification and Sensor Calibration for Weigh-in-motion (WIM) Systems by : Chen-Fu Liao

Download or read book Traffic Data Quality Verification and Sensor Calibration for Weigh-in-motion (WIM) Systems written by Chen-Fu Liao and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This project aims to understand the characteristics of WIM measurements, identify different WIM operational modes, and develop mixture models for each operation period. Several statistical data analysis methodologies were explored to detect measurement drifts and support sensor calibration. A mixture modeling technique using Expectation Maximization (EM) algorithm and cumulative sum (CUSUM) methodologies were explored for data quality assurance. An adjusting CUSUM methodology was used to detect data anomaly. The results indicated that the adjusting CUSUM methodology was able to detect the sensor drifts. The CUSUM curves can trigger a potential drifting alert to the WIM manager. Further investigation was performed to compare the CUSUM deviation and the calibration adjustment. However, the analysis results did not indicate any relationship between the computed CUSUM deviation and the calibration adjustment.

High Speed Weigh-in-motion System Calibration Practices

Author : A. T. Papagiannakis
Publisher : Transportation Research Board
ISBN 13 : 0309098157
Total Pages : 413 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis High Speed Weigh-in-motion System Calibration Practices by : A. T. Papagiannakis

Download or read book High Speed Weigh-in-motion System Calibration Practices written by A. T. Papagiannakis and published by Transportation Research Board. This book was released on 2008 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Comparison of Weight Data Collected at Weigh-in-motion (WIM) Systems Located on the Same Route

Author : Curtis Dahlin
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (299 download)

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Book Synopsis Comparison of Weight Data Collected at Weigh-in-motion (WIM) Systems Located on the Same Route by : Curtis Dahlin

Download or read book Comparison of Weight Data Collected at Weigh-in-motion (WIM) Systems Located on the Same Route written by Curtis Dahlin and published by . This book was released on 1994 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Department of Transportation and Related Agencies Appropriations for 2000

Author : United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations
Publisher :
ISBN 13 :
Total Pages : 1800 pages
Book Rating : 4.:/5 (6 download)

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Book Synopsis Department of Transportation and Related Agencies Appropriations for 2000 by : United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations

Download or read book Department of Transportation and Related Agencies Appropriations for 2000 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations and published by . This book was released on 1999 with total page 1800 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Annual Report

Author : University of Minnesota. Intelligent Transportation Systems Institute
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.3/5 (555 download)

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Book Synopsis Annual Report by : University of Minnesota. Intelligent Transportation Systems Institute

Download or read book Annual Report written by University of Minnesota. Intelligent Transportation Systems Institute and published by . This book was released on 2004 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Freight Demand Modeling and Data Improvement

Author : Keith M. Chase and Patrick Anater
Publisher : Transportation Research Board
ISBN 13 : 0309129672
Total Pages : 158 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Freight Demand Modeling and Data Improvement by : Keith M. Chase and Patrick Anater

Download or read book Freight Demand Modeling and Data Improvement written by Keith M. Chase and Patrick Anater and published by Transportation Research Board. This book was released on with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report from the second Strategic Highway Research Program (SHRP 2), which is administered by the Transportation Research Board of the National Academies, presents the process used to develop a strategic plan aimed at improving the state of the practice in freight demand modeling and freight data. The need for this plan is identified through the increasing number of freight bottlenecks found throughout the U.S. highway network, demonstrating that more information is needed on freight flows and their relation to highway capacity planning. The report documents the research approach and findings during the development of the C20 Strategic Plan, which is available on the TRB website. The report also includes documentation of the Innovations in Freight Demand Modeling and Data Symposium, a pilot effort initiated in September 2010.

Quality Assurance of Weigh-in-motion Data

Author : Herbert Fletcher Southgate
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (19 download)

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Book Synopsis Quality Assurance of Weigh-in-motion Data by : Herbert Fletcher Southgate

Download or read book Quality Assurance of Weigh-in-motion Data written by Herbert Fletcher Southgate and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advanced Weigh-in-motion System for Weighing Vehicles at High Speed

Author :
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (684 download)

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Book Synopsis Advanced Weigh-in-motion System for Weighing Vehicles at High Speed by :

Download or read book Advanced Weigh-in-motion System for Weighing Vehicles at High Speed written by and published by . This book was released on 1998 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A state-of-the-art, Advanced Weigh-In-Motion (WIM) system has been designed, installed, and tested on the west bound side of Interstate I-75/I-40 near the Knox County Weigh Station. The project is a Cooperative Research and Development Agreement (CRADA) between Oak Ridge National Laboratory (ORNL) and International Road Dynamics, Inc. (IRD) sponsored by the Office of Uranium Programs, Facility and Technology Management Division of the Department of Energy under CRADA No. ORNL95-0364. ORNL, IRD, the Federal Highway Administration, the Tennessee Department of Safety and the Tennessee Department of Transportation have developed a National High Speed WIM Test Facility for test and evaluation of high-speed WIM systems. The WIM system under evaluation includes a Single Load Cell WIM scale system supplied and installed by IRD. ORNL developed a stand-alone, custom data acquisition system, which acquires the raw signals from IRD's in-ground single load cell transducers. Under a separate contract with the Federal Highway Administration, ORNL designed and constructed a laboratory scale house for data collection, analysis and algorithm development. An initial advanced weight-determining algorithm has been developed. The new advanced WIM system provides improved accuracy and can reduce overall system variability by up to 30% over the existing high accuracy commercial WIM system.

High Speed Weigh-in-Motion Calibration Practices

Author : A. T. Papagiannakis
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis High Speed Weigh-in-Motion Calibration Practices by : A. T. Papagiannakis

Download or read book High Speed Weigh-in-Motion Calibration Practices written by A. T. Papagiannakis and published by . This book was released on 2010 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper provides a summary of the weigh-in-motion (WIM) calibration practices used by state highway and load enforcement agencies in the United States. The detailed statistical data presented were collected through a web-based survey questionnaire. It covers three common WIM calibration practices, namely utilizing multiple passes of test trucks, utilizing traffic stream vehicles of known static weight, and employing only WIM data quality control (QC) techniques. To put the actual practice in perspective, an overview is provided of the current WIM calibration standard (ASTM E1318-02) and the new provisional standard for quantifying pavement roughness at the approach to WIM systems (AASHTO MP 14-05). Most agencies use a combination of two or more of these methods for WIM system calibration. The majority of agencies uses WIM data QC on a routine basis and they resort to one of the other two calibration methods when WIM data quality deteriorates. Test truck calibration typically involves one or two Class 9 trucks running at several speeds. Few of these agencies, however, perform actual pavement roughness measurements on the approach to the WIM sites. Agencies that use traffic stream vehicles of known static weight for WIM calibration obtain static weights manually using permanent static scales. The method involves up to 100 trucks selected by class, speed or both class and speed. Agencies use a variety of traffic elements and formulas for computing calibration factors. Similarly, a variety of traffic data element errors are computed and various approaches are used for computing calibration factors. In the light of these findings, the paper provides a number of recommendations for improving current WIM calibration practices.

Portable Weigh-in-motion System Evaluation

Author :
Publisher :
ISBN 13 :
Total Pages : 43 pages
Book Rating : 4.:/5 (911 download)

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Book Synopsis Portable Weigh-in-motion System Evaluation by :

Download or read book Portable Weigh-in-motion System Evaluation written by and published by . This book was released on 2015 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Minnesota Local Road Research Board, MnDOT, and SRF performed an evaluation of a portable weigh-inmotion (WIM) system at several locations throughout Minnesota. The system was developed at the University of Minnesota-Duluth and offers roadway designers a low-cost method for obtaining vehicle load distribution data across the state's road network. To deploy the system, the weigh pads of the system were temporarily affixed sensors across the roadway lanes. As vehicles passed over the weigh pads, pressure sensors within the pads detected the weight of vehicles and the system recorded the data for later analysis. Traditional methods for travel monitoring generate traffic volume and classification data, but weigh-in-motion systems give designers a more accurate idea of current and projected traffic loading demands. SRF's testing provided implementation refinements that were incorporated into the system. During the two-year deployment process, the portable WIM system was installed under a wide array of environmental conditions to demonstrate the system's capabilities. Data generated by the system was analyzed. The Final Report details system deployment, calibration, and system accuracy.

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 488 pages
Book Rating : 4.:/5 (3 download)

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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 1995 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Federally Coordinated Program of Highway Research and Development

Author : United States. Federal Highway Administration
Publisher :
ISBN 13 :
Total Pages : 516 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Federally Coordinated Program of Highway Research and Development by : United States. Federal Highway Administration

Download or read book Federally Coordinated Program of Highway Research and Development written by United States. Federal Highway Administration and published by . This book was released on with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bridge Design, Assessment and Monitoring

Author : Airong Chen
Publisher : Routledge
ISBN 13 : 1351208780
Total Pages : 124 pages
Book Rating : 4.3/5 (512 download)

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Book Synopsis Bridge Design, Assessment and Monitoring by : Airong Chen

Download or read book Bridge Design, Assessment and Monitoring written by Airong Chen and published by Routledge. This book was released on 2018-12-07 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridges play important role in modern infrastructural system. This book provides an up-to-date overview of the field of bridge engineering, as well as the recent significant contributions to the process of making rational decisions in bridge design, assessment and monitoring and resources optimization deployment for the purpose of enhancing the welfare of society. Tang specifies the purposes and requirements of the conceptual bridge design, considering bridge types, basic elements, structural systems and load conditions. Cremona and Poulin propose an assessment procedure for existing bridges. Kallias et al. develop a framework for the performance assessment of metallic bridges under atmospheric exposure by integrating coating deterioration and corrosion modelling. Soriano et al. employ a simplified approach to estimate the maximum traffic load effect on a highway bridge and compare the results with other approaches based on on-site weigh-in-motion data. Akiyama et al. propose a method for reliability-based durability design and service life assessment of reinforced concrete deck slab of jetty structures. Chen et al. propose a meso-scale model to simulate the uniform and pitting corrosion of rebar in concrete and to obtain the crack patterns of the concrete with different rebar arrangements. Ruan et al. present a traffic load model for long span multi-pylon cable- stayed bridges. Khuc and Catbas implement a non-target vision- based method for the measurement of both static and dynamic displacements time histories. Finally, Cruz presents the career of the outstanding bridge engineer Edgar Cardoso in the fields of bridge design and experimental analysis. The book serves as a valuable reference to all concerned with bridge structure and infrastructure systems, including students, researchers, engineers, consultants and contractors from all areas sections of bridge engineering. The chapters originally published as a special issue in Structure and Infrastructure Engineering.

Managing Data in Motion

Author : April Reeve
Publisher : Newnes
ISBN 13 : 0123977916
Total Pages : 203 pages
Book Rating : 4.1/5 (239 download)

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Book Synopsis Managing Data in Motion by : April Reeve

Download or read book Managing Data in Motion written by April Reeve and published by Newnes. This book was released on 2013-02-26 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Managing Data in Motion describes techniques that have been developed for significantly reducing the complexity of managing system interfaces and enabling scalable architectures. Author April Reeve brings over two decades of experience to present a vendor-neutral approach to moving data between computing environments and systems. Readers will learn the techniques, technologies, and best practices for managing the passage of data between computer systems and integrating disparate data together in an enterprise environment. The average enterprise's computing environment is comprised of hundreds to thousands computer systems that have been built, purchased, and acquired over time. The data from these various systems needs to be integrated for reporting and analysis, shared for business transaction processing, and converted from one format to another when old systems are replaced and new systems are acquired. The management of the "data in motion" in organizations is rapidly becoming one of the biggest concerns for business and IT management. Data warehousing and conversion, real-time data integration, and cloud and "big data" applications are just a few of the challenges facing organizations and businesses today. Managing Data in Motion tackles these and other topics in a style easily understood by business and IT managers as well as programmers and architects. Presents a vendor-neutral overview of the different technologies and techniques for moving data between computer systems including the emerging solutions for unstructured as well as structured data types Explains, in non-technical terms, the architecture and components required to perform data integration Describes how to reduce the complexity of managing system interfaces and enable a scalable data architecture that can handle the dimensions of "Big Data"

Bridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability

Author : Joan Ramon Casas
Publisher : CRC Press
ISBN 13 : 1000798771
Total Pages : 5491 pages
Book Rating : 4.0/5 (7 download)

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Book Synopsis Bridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability by : Joan Ramon Casas

Download or read book Bridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability written by Joan Ramon Casas and published by CRC Press. This book was released on 2022-06-26 with total page 5491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability contains lectures and papers presented at the Eleventh International Conference on Bridge Maintenance, Safety and Management (IABMAS 2022, Barcelona, Spain, 11–15 July, 2022). This e-book contains the full papers of 322 contributions presented at IABMAS 2022, including the T.Y. Lin Lecture, 4 Keynote Lectures, and 317 technical papers from 36 countries all around the world. The contributions deal with the state-of-the-art as well as emerging concepts and innovative applications related to the main aspects of safety, maintenance, management, life-cycle, resilience, sustainability and technological innovations of bridges. Major topics include: advanced bridge design, construction and maintenance approaches, safety, reliability and risk evaluation, life-cycle management, life-cycle, resilience, sustainability, standardization, analytical models, bridge management systems, service life prediction, structural health monitoring, non-destructive testing and field testing, robustness and redundancy, durability enhancement, repair and rehabilitation, fatigue and corrosion, extreme loads, needs of bridge owners, whole life costing and investment for the future, financial planning and application of information and computer technology, big data analysis and artificial intelligence for bridges, among others. This volume provides both an up-to-date overview of the field of bridge engineering and significant contributions to the process of making more rational decisions on bridge safety, maintenance, management, life-cycle, resilience and sustainability of bridges for the purpose of enhancing the welfare of society. The volume serves as a valuable reference to all concerned with and/or involved in bridge structure and infrastructure systems, including students, researchers and practitioners from all areas of bridge engineering.

Highway Engineering

Author : Athanassios Nikolaides
Publisher : CRC Press
ISBN 13 : 1466579978
Total Pages : 868 pages
Book Rating : 4.4/5 (665 download)

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Book Synopsis Highway Engineering by : Athanassios Nikolaides

Download or read book Highway Engineering written by Athanassios Nikolaides and published by CRC Press. This book was released on 2014-11-24 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt: An International Textbook, from A to ZHighway Engineering: Pavements, Materials and Control of Quality covers the basic principles of pavement management, highlights recent advancements, and details the latest industry standards and techniques in the global market. Utilizing the author's more than 30 years of teaching, researching, and consulting e