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Using Wim Systems And Tube Counters To Collect And Generate Me Traffic Data For Pavement Design And Analysis
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Book Synopsis Using WIM Systems and Tube Counters to Collect and Generate ME Traffic Data for Pavement Design and Analysis by : Lubinda F. Walubita
Download or read book Using WIM Systems and Tube Counters to Collect and Generate ME Traffic Data for Pavement Design and Analysis written by Lubinda F. Walubita and published by . This book was released on 2019 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: Axle load spectra data, typically from permanent weigh-in-motion (WIM) stations, constitute the primary mechanistic-empirical (ME) traffic data input for accurate and optimal pavement design and analysis. However, due to the limited number of available permanent WIM stations (mostly located on interstate highways), most ME pavement designs rely on antiquated estimates, even for the 18-kip equivalent single axle loads (ESALs) that often result in un-optimized and costly designs and/or poor-performing pavement structures with increased maintenance costs or high construction costs due to overdesigning -- with high overall life-cycle costs. As a means to address these challenges, this study was initiated, among others, to (a) review the current state-of-the-art methodologies used for estimating ME traffic data inputs, (b) develop clustering algorithms for estimating site-specific ME traffic data, (c) explore the portable WIM as a supplement to the permanent WIM station data, and (d) develop and manage a Microsoft Access ME traffic data storage system (T-DSS). The scope of work included traffic data collection from numerous WIM stations and development of traffic data analysis macros and clustering algorithms. Key findings from the study indicated the following: (a) portable WIM is a cost-effective supplement for site-specific traffic data collection -- with proper installation and calibration, quality traffic data with an accuracy of up to 90% is attainable; (b) the developed WIM data analysis macros are satisfactorily able to compute and generate ME traffic inputs for both flexible and rigid (concrete) pavements; and (c) the developed clustering algorithms and macros constitute an ideal and rapid methodology for predicting and estimating ME traffic data inputs. Key recommendations are continued portable WIM data collection, particularly in West Texas and on farm-to-market (FM) roads, for population of the T-DSS and improved prediction accuracy of the clustering algorithms.
Book Synopsis Infrastructure Sustainability Through New Developments in Material, Design, Construction, Maintenance, and Testing of Pavements by : Anand Tapase
Download or read book Infrastructure Sustainability Through New Developments in Material, Design, Construction, Maintenance, and Testing of Pavements written by Anand Tapase and published by Springer Nature. This book was released on 2021-07-10 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book includes a collection of research and practical papers aiming with key priority for improving the infrastructural sustainability for our well-being and day-to-day lives through novel developments. The united efforts through new developments in material, design, construction, maintenance, and testing of pavements from all over the world are taken under one umbrella. Topics include issues related to civil infrastructure such as the use of construction waste, recycled aggregates, service life prediction of pavements, mechanical behavior of SMA, control measures of ready mixed concrete, determination of landslide high-risk areas, Simulation of rock hydraulics in rock joint, sustainable planning for provision of basic infrastructural facilities in rural areas. It is anticipated that this book will support decisions regarding the optimal management and maintenance of civil infrastructures to support a more resilient and sustainable environment for infrastructure users.
Book Synopsis Draft Guidelines for Portable Weight-in-motion (WIM) System Installation and Traffic Data Analysis by : Lubinda F. Walubita
Download or read book Draft Guidelines for Portable Weight-in-motion (WIM) System Installation and Traffic Data Analysis written by Lubinda F. Walubita and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the portable weight-in-motion (WIM) technology has been successfully explored and practically used to collect site-specific traffic data in Texas Department of Transportation Research Project 0-6940 Develop System to Render Mechanistic-Empirical Traffic Data for Pavement Design, this standardized guideline was developed to aid users understand more thoroughly the portable WIM system deployment and its operation for traffic data collection. This draft guideline can be used as a main guide for the portable WIM system implementation on Texas highways. As a supporting material, this guideline covers and describes the following points: 1. Portable WIM components and the required accessories. 2. Preparation of the portable WIM installation and highway site selection. 3. Portable WIM setup, installation, calibration, maintenance, uninstallation, and troubleshooting. 4. Automated macros for processing and analyzing portable WIM traffic data, such as volume, speed, vehicle classification, and weight data. 5. Automated macros for generating Flexible Pavement Design System (FPS) and Texas Mechanistic-Empirical Flexible Pavement Design System (TxME) traffic input data for pavement design.
Book Synopsis Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design by : Cambridge Systematics
Download or read book Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design written by Cambridge Systematics and published by Transportation Research Board. This book was released on 2005 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Site Verification of Weigh-In-Motion Traffic and TIRTL Classification Data by : Shuo Li
Download or read book Site Verification of Weigh-In-Motion Traffic and TIRTL Classification Data written by Shuo Li and published by . This book was released on 2010-12-15 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Develop System to Render Mechanistic-empirical Traffic Data for Pavement Design by : Lubinda F. Walubita
Download or read book Develop System to Render Mechanistic-empirical Traffic Data for Pavement Design written by Lubinda F. Walubita and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This zipped file is composed of several PDFs (instructor guide, student guide, and a PowerPoint Presentation) for a training workshop meant to provide the methodologies for generating and using site-specific Mechanistic-Empirical-compatible traffic data for flexible and rigid pavement designs. The half-day course covers: 1. Traffic data sources to obtain the applicable M-E traffic data. 2. Traffic data parameters calculated and generated using the collected traffic data such as traffic volume, speed, classification, and weight data. 3. Traffic data inputs required for pavement design (for FPS and ME design software). 4. The traffic data storage system (The T-DSS) to store and provide ME-compatible traffic data support. 5. Data analysis macros and clustering algorithms to automatically analyze and generate the ME-compatible traffic data
Book Synopsis Mechanistic-Empirical Compatible Traffic Data Generation: Portable Weigh-in-Motion Versus Cluster Analysis by : Lubinda F. Walubita
Download or read book Mechanistic-Empirical Compatible Traffic Data Generation: Portable Weigh-in-Motion Versus Cluster Analysis written by Lubinda F. Walubita and published by . This book was released on 2020 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Axle load distribution factors (ALDFs) are used as one of the primary traffic data inputs for mechanistic-empirical (ME) pavement design methods for predicting the impact of varying traffic loads on pavement performance with a higher degree of accuracy than empirical methods that are solely based on equivalent single axle load (ESAL) concept. Ideally, to ensure optimal pavement structural design, site-specific traffic load spectra data--generated from weigh-in-motion (WIM) systems--should be used during the pavement design process. However, because of the limited number of available permanent WIM stations (in Texas, for example), it is not feasible to generate a statewide ALDFs database for each highway or project from permanent WIM data. In this study, two possible alternative methods, namely, the direct measurement using a portable WIM system and the cluster analysis technique, were explored for generating site-specific ME-compatible traffic data for a highway test section, namely, state highway (SH) 7 in Bryan District (Texas). The traffic data were then used for estimating pavement performance using a ME pavement design software, namely, the Texas Mechanistic-Empirical Thickness Design System (TxME). The TxME-predicted pavement performance (e.g., rutting) using the portable WIM-generated traffic input parameters closely matched with the actual field performance. Overall, the study findings indicated that the portable WIM (with proper installation and calibration) constitutes an effective means for rapidly collecting reliable site-specific ME-compatible traffic data.
Book Synopsis Guidelines for Portable Weigh-In-Motion (WIM) System Installation and Traffic Data Analysis by : Adrianus Prakoso
Download or read book Guidelines for Portable Weigh-In-Motion (WIM) System Installation and Traffic Data Analysis written by Adrianus Prakoso and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Product 5-6940-01-P2 has 3 PDFs in 1 zip file: the Instructor's Guide, the Student's Guide, and the PowerPoint slides for the training workshop. As reflected in the PowerPoint slides, the workshop is a half-day course designed to cover: 1. Portable WIM components and the required accessories. 2. Preparation of the portable WIM installation and highway site selection. 3. Portable WIM setup, installation, calibration, maintenance, uninstallation, and troubleshooting. 4. Automated macros for processing and analyzing portable WIM traffic data, such as volume, speed, vehicle classification, and weight data. 5. Automated macros for generating Flexible Pavement Design System (FPS) and Texas Mechanistic-Empirical Flexible Pavement Design System (TxME) traffic input data for pavement design. 6. The MS Access Traffic Data Storage System (T-DSS). 7. Demonstration case studies.
Book Synopsis A Methodology for Obtaining Traffic Data Input to the NCHRP 1-37A PDG by : Jingjuan Li
Download or read book A Methodology for Obtaining Traffic Data Input to the NCHRP 1-37A PDG written by Jingjuan Li and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Traffic Characterization for a Mechanistic-empirical Pavement Design by : Jorge A. Prozzi
Download or read book Traffic Characterization for a Mechanistic-empirical Pavement Design written by Jorge A. Prozzi and published by . This book was released on 2006 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this research study was to assess and address the implications of the axle load spectra approach proposed by the M-E Design Guide. In addition, recommendations were developed regarding traffic data needs and availability to aid in deciding the installation locations of future WIM stations in Texas. A methodology for specifying the required accuracy of WIM equipment based on the effect that this accuracy has on pavement performance prediction was also developed. Regarding traffic volume forecasting, a methodology is presented that allows optimum use of available data by simultaneously estimating traffic growth and seasonal traffic variability.
Book Synopsis Optimization of Traffic Data Collection for Specific Pavement Design Applications by : A. T. Papagiannakis
Download or read book Optimization of Traffic Data Collection for Specific Pavement Design Applications written by A. T. Papagiannakis and published by . This book was released on 2006 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design by : National Cooperative Highway Research Program
Download or read book Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design written by National Cooperative Highway Research Program and published by . This book was released on 2004 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design by :
Download or read book Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement Design written by and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Implementation of Traffic Data Quality Verification for Weight in Motion Sites by :
Download or read book Implementation of Traffic Data Quality Verification for Weight in Motion Sites written by and published by . This book was released on 2015 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Weigh-In-Motion (WIM) system tends to go out of calibration from time to time, as a result generate biased and inaccurate measurements. Several external factors such as vehicle speed, weather, pavement conditions, etc. can be attributed to such anomaly. To overcome this problem, a statistical quality control technique is warranted that would provide the WIM operator with some guidelines whenever the system tends to go out of calibration. A mixture modeling technique using Expectation Maximization (EM) algorithm was implemented to divide the Gross Vehicle Weight (GVW) measurements of vehicle class 9 into three components, (unloaded, partially loaded, and fully loaded). Cumulative Sum (CUSUM) statistical process technique was used to identify any abrupt change in mean level of GVW measurements. Special attention was given to the presence of auto-correlation in the data by fitting an auto-regressive time series model and then performing CUSUM analysis on the fitted residuals. A data analysis software tool was developed to perform EM Fitting and CUSUM analyses. The EM analysis takes monthly WIM raw data and estimates the mean and deviations of GVW of class 9 fully loaded trucks. Results of the EM analyses are stored in a file directory for CUSUM analysis. Output from the CUSUM analysis will indicate whether there is any sensor drift during the analysis period. Results from the analysis suggest that the proposed methodology is able to estimate a shift in the WIM sensor accurately and also indicate the time point when the WIM system went out-of-calibration. A data analysis software tool, WIM Data Analyst, was developed using the Microsoft Visual Studio software development package based on the Microsoft Windows® .NET framework. An open source software tool called R.NET was integrated into the Microsoft .NET framework to interface with the R software which is another open source software package for statistical computing and analysis.
Book Synopsis Development of Traffic Inputs for the Mechanistic-empirical Pavement Design Guide in New York State by : Ferdous Intaj
Download or read book Development of Traffic Inputs for the Mechanistic-empirical Pavement Design Guide in New York State written by Ferdous Intaj and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Proper characterization of traffic data is a prerequisite for the determination of appropriate traffic inputs to Mechanistic-Empirical Pavement Design Guide (MEPDG). The development of proper traffic inputs helps reflect the traffic conditions over the life of pavement which would decrease the maintenance, repair and traffic disruptions and improve the traffic conditions of a road network. The objective of the study was to characterize the traffic data and suggest the sitespecific, regional or state wide average values for traffic inputs to MEPDG for New York State. Vehicle class distribution (VCD), monthly distribution factors (MDF), hourly distribution factors (HDF), average number of axle groups per vehicle (AGPV) and axle load spectra were obtained from vehicle classification and WIM sites in New York State for the years of 2007-2011. These traffic data was processed with TrafLoad software. Cluster analysis was performed on the processed VCD, MDF and HDF data collected during the time period. This statistical analysis could not be done for AGPV values and axle load spectra due to the unavailability of sufficient number of WIM sites. However, MEPDG runs were carried out to investigate the effect of the variability of traffic inputs on the pavement performance of typical new flexible and rigid pavement structures. The statistical analysis showed consistent results for VCD and HDF over the years. However, the results of statistical analysis on MDF were not consistent over the time period. Site specific values for VCD, MDF, AGPV and axle load spectra showed little variation with statewide average values after the cluster analysis and MEPDG runs for the vehicle classification and WIM data of the year of 2010. This was observed for both flexible and rigid pavements. However, HDF did not show any effect on the design of pavement with MEPDG. These findings were also verified from the analysis of vehicle classification and WIM data of the other years.
Book Synopsis Streamlining the Collection and Processing of Traffic Count Statistics by : David T. Hartgen
Download or read book Streamlining the Collection and Processing of Traffic Count Statistics written by David T. Hartgen and published by . This book was released on 1982 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Traffic Data Collection and Analysis by : Alexander French
Download or read book Traffic Data Collection and Analysis written by Alexander French and published by Transportation Research Board National Research. This book was released on 1986 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis will be of interest to traffic engineers, highway planners, and others concerned with the collection of traffic data for traffic engineering studies, for long-range planning, and for evaluation of traffic law enforcement. Information is presented on current practice in traffic data collection and analysis. Although types of highway traffic data collected over the past 50 years have not changed significantly, the quantities, analysis procedure, and presentations of these data have changed as a result of changing policies, operational concerns, and capabilities resulting from new technologies. This report of the Transportation Research Board describes the technology (both hardware and software) that is being used for traffic data collection, and discusses technological advances that have not yet been applied to the acquisition and presentation of traffic data.
