Performance Measurement For Highway Winter Maintenance Operations

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Performance Measurement for Highway Winter Maintenance Operations

Author : Lin Qiu
Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Performance Measurement for Highway Winter Maintenance Operations by : Lin Qiu

Download or read book Performance Measurement for Highway Winter Maintenance Operations written by Lin Qiu and published by . This book was released on 2009 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this research project was to develop a method to measure the performance of a winter maintenance program with respect to the task of providing safety and mobility to the traveling public. Developing these measures required a number of steps, each of which was accomplished. First, the impact of winter weather on safety (crash rates) and mobility (average vehicle speeds) were measured by a combination of literature reviews and analysis of Iowa Department of Transportation traffic and Road Weather Information System data. Second, because not all winter storms are the same in their effects on safety and mobility, a method had to be developed to determine how much the various factors that describe a winter storm actually change safety and mobility. As part of this effort a storm severity index was developed, which ranks each winter storm on a scale between 0 (a very benign storm) and I (the worst imaginable storm). Additionally a number of methods of modeling the relationships between weather, winter maintenance actions and road surface conditions were developed and tested. The end result of this study was a performance measure based on average vehicle speed. For a given class of road, a maximum expected average speed reduction has been identified. For a given storm, this maximum expected average speed reduction is modified by the storm severity index to give a target average speed reduction. Thus, if for a given road the maximum expected average speed reduction is 20 mph, and the storm severity for a particular storm is 0.6, then the target average speed reduction for that road in that storm is 0.6 x 20 mph or 12 mph. If the average speed on that road during and after the storm is only 12 mph or less than the average speed on that road in good weather conditions, then the winter maintenance performance goal has been met.

Quantifying Uncertainty in Real Time Performance Measurement for Highway Winter Maintenance Operations

Author : Jillian Lyon
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (894 download)

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Book Synopsis Quantifying Uncertainty in Real Time Performance Measurement for Highway Winter Maintenance Operations by : Jillian Lyon

Download or read book Quantifying Uncertainty in Real Time Performance Measurement for Highway Winter Maintenance Operations written by Jillian Lyon and published by . This book was released on 2014 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Winter weather in Iowa is often unpredictable and can have an adverse impact on traffic flow. The Iowa Department of Transportation (Iowa DOT) attempts to lessen the impact of winter weather events on traffic speeds with various proactive maintenance operations. In order to assess the performance of these maintenance operations, it would be beneficial to develop a model for expected speed reduction based on weather variables and normal maintenance schedules. Such a model would allow the Iowa DOT to identify situations in which speed reductions were much greater than or less than would be expected for a given set of storm conditions, and make modifications to improve efficiency and effectiveness. The objective of this work was to predict speed changes relative to baseline speed under normal conditions, based on nominal maintenance schedules and winter weather covariates (snow type, temperature, and wind speed), as measured by roadside weather stations. This allows for an assessment of the impact of winter weather covariates on traffic speed changes, and estimation of the effect of regular maintenance passes. The researchers chose events from Adair County, Iowa and fit a linear model incorporating the covariates mentioned previously. A Bayesian analysis was conducted to estimate the values of the parameters of this model. Specifically, the analysis produces a distribution for the parameter value that represents the impact of maintenance on traffic speeds. The effect of maintenance is not a constant, but rather a value that the researchers have some uncertainty about and this distribution represents what they know about the effects of maintenance. Similarly, examinations of the distributions for the effects of winter weather covariates are possible. Plots of observed and expected traffic speed changes allow a visual assessment of the model fit. Future work involves expanding this model to incorporate many events at multiple locations. This would allow for assessment of the impact of winter weather maintenance across various situations, and eventually identify locations and times in which maintenance could be improved.

Snow Removal Performance Metrics

Author : Gang Xu
Publisher :
ISBN 13 :
Total Pages : 94 pages
Book Rating : 4.:/5 (12 download)

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Book Synopsis Snow Removal Performance Metrics by : Gang Xu

Download or read book Snow Removal Performance Metrics written by Gang Xu and published by . This book was released on 2017 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document is the final report for the Clear Roads project entitled Snow Removal Performance Metrics. The project team was led by researchers at Washington State University on behalf of Clear Roads, an ongoing pooled fund research effort focused on winter maintenance materials, equipment, and methods. Clear Roads research projects are managed and administered by the Minnesota Department of Transportation (MnDOT). Through this project, the research team conducted a comprehensive literature review on the use of performance measures by transportation agencies for winter highway maintenance activities. To identify the effective performance metrics for snow and ice maintenance operations, the team surveyed all possible snow and ice states to gather information about their use of performance measures. The survey results were tabulated and analyzed to identify commonalities and differences between agencies and to develop a matrix of performance measures. Relative costs associated with different metrics were also presented. Based on the literature review and survey results, recommendations were made regarding the performance measures that should be considered for further evaluation. Remaining knowledge gaps were also identified, and recommendations were made for cases where existing measures may be modified or new measures developed for evaluation in future research.

Performance Measures for Snow and Ice Control Operations

Author : T. H. Maze
Publisher :
ISBN 13 :
Total Pages : 142 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Performance Measures for Snow and Ice Control Operations by : T. H. Maze

Download or read book Performance Measures for Snow and Ice Control Operations written by T. H. Maze and published by . This book was released on 2007 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under the NCHRP 06-17 project, the research team surveyed snow and ice control organizations in the United States, Canada, Europe, and Asia to determine the current trends in performance measurement. The team also inquired about the methods used in developing these programs in order to determine a practical, user friendly method to assist snow and ice control managers in developing a performance measurement system that uses traditional and nontraditional performance indicators and measurement issues. To achieve the project objectives, the researchers issued a survey to snow and ice control agencies throughout North America, Europe, and Asia to obtain data of the performance indicators and measures used, if any, by these agencies. The identified performance indicators and measures were then categorized, defined, and assessed for their usefulness. A process was then developed to assist snow and ice control operations managers in preparing a customer-focused, environmentally friendly performance measurement program.

Feasibility of Using Traffic Data for Winter Road Maintenance Performance Measurement

Author : Luchao Cao
Publisher :
ISBN 13 :
Total Pages : 125 pages
Book Rating : 4.:/5 (96 download)

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Book Synopsis Feasibility of Using Traffic Data for Winter Road Maintenance Performance Measurement by : Luchao Cao

Download or read book Feasibility of Using Traffic Data for Winter Road Maintenance Performance Measurement written by Luchao Cao and published by . This book was released on 2014 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Winter road maintenance (WRM) operations, such as plowing, salting and sanding, are significant to maintain both safety and mobility of highways, especially in countries like Canada. Traditionally, WRM performance is measured using bare pavement regain time and snow depth/coverage, which are reported by maintenance or quality assurance personnel based on periodic visual inspection during and after snow events. However, the increasing costs associated with WRM and the lack of objectivity and repeatability of traditional performance monitoring methods have stimulated significant interest in developing alternative performance measures. This research is motivated by the need to develop an outcome based WRM performance measurement system with a specific focus on investigating the feasibility of inferring WRM performance from traffic state. The research studies the impact of winter weather and road surface conditions (RSC) on the average traffic speed of rural highways with the intention of examining the feasibility of using traffic speed from traffic sensors as an indicator of WRM performance. Detailed data on weather, RSC, and traffic over three winter seasons from 2008 to 2011 on rural highway sites in Iowa, US is used for this investigation. Three modeling techniques are applied and compared for modeling the relationship between traffic speed and various road weather and surface condition factors, including multivariate linear regression, artificial neural network (ANN), and time series analysis. Multivariate linear regression models are compared by temporal aggregation (15 minutes vs. 60 minutes), types of highways (two-lane vs. four-lane), and model types (separated vs. combined). The research also examines the feasibility of estimating/classifying RSC based on traffic speed and winter weather factors using multi-layer logistic regression classification trees. The modeling results have shown the expected effects of weather variables including precipitation, temperature and wind speed, and verified the statistically strong relationship between traffic speed and RSC. The findings suggest that speed could potentially be used as an indicator of bare pavement conditions and thus the performance of WRM operations. It is also confirmed that the time series model could be a valuable tool for predicting real-time traffic conditions based on weather forecast and planned maintenance operations, and the multi-layer logistic regression classification tree model could be applied for estimating RSC on highways based on average traffic speed and weather conditions.

GIS Tool to Measure Performance of Winter Highway Operations

Author :
Publisher :
ISBN 13 :
Total Pages : 122 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis GIS Tool to Measure Performance of Winter Highway Operations by :

Download or read book GIS Tool to Measure Performance of Winter Highway Operations written by and published by . This book was released on 2006 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Sustainable Winter Road Operations

Author : Xianming Shi
Publisher : John Wiley & Sons
ISBN 13 : 1119185068
Total Pages : 476 pages
Book Rating : 4.1/5 (191 download)

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Book Synopsis Sustainable Winter Road Operations by : Xianming Shi

Download or read book Sustainable Winter Road Operations written by Xianming Shi and published by John Wiley & Sons. This book was released on 2018-08-27 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first and only comprehensive guide to best practices in winter road operations Winter maintenance operations are essential to ensure the safety, mobility, and productivity of transportation systems, especially in cold-weather climates, and responsible agencies are continually challenged to provide a high level of service in a fiscally and environmentally responsible manner. Sustainable Winter Road Operations bridges the knowledge gaps, providing the first up-to-date, authoritative, single-source overview and guide to best practices in winter road operations that considers the triple bottom line of sustainability. With contributions from experts in the field from around the world, this book takes a holistic approach to the subject. The authors address the many negative impacts on regional economies and the environment of poorly planned and inadequate winter road operations, and they make a strong case for the myriad benefits of environmentally sustainable concepts and practices. Best practice applications of materials, processes, equipment, and associated technologies and how they can improve the effectiveness and efficiency of winter operations, optimize materials usage, and minimize cost, corrosion, and environmental impacts are all covered in depth. Provides the first up-to-date, authoritative and comprehensive overview of best practices in sustainable winter road operations currently in use around the world Covers materials, processes, equipment, and associated technologies for sustainable winter road operations Brings together contributions by an international all-star team of experts with extensive experience in designing, implementing, and managing sustainable winter road operations Designed to bring professionals involved in transportation and highway maintenance and control up to speed with current best practice Sustainable Winter Road Operations is essential reading for maintenance professionals dealing with snow and ice control operations on highways, motorways and local roads. It is a valuable source of information and guidance for decision makers, researchers, and engineers in transportation engineering involved in transportation and highway maintenance. And it is an ideal textbook for advanced-level courses in transportation engineering.

Performance-based Highway Maintenance and Operations Management

Author : Michael J. Markow
Publisher : Transportation Research Board
ISBN 13 : 0309223474
Total Pages : 96 pages
Book Rating : 4.3/5 (92 download)

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Book Synopsis Performance-based Highway Maintenance and Operations Management by : Michael J. Markow

Download or read book Performance-based Highway Maintenance and Operations Management written by Michael J. Markow and published by Transportation Research Board. This book was released on 2012 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This synthesis examines current performance-based management practices that are applied by state departments of transportation (DOTs) in highway maintenance and operations (M&O). Past studies have focused on the elements that make up a performance-based M&O approach, such as condition ratings, levels of service, performance measures, and threshold values. This study focuses on how state DOTs actually use performance-based measures to manage their highway programs."--Preface.

Highway Winter Maintenance

Author :
Publisher : Thomas Telford
ISBN 13 : 0727729578
Total Pages : 106 pages
Book Rating : 4.7/5 (277 download)

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Book Synopsis Highway Winter Maintenance by :

Download or read book Highway Winter Maintenance written by and published by Thomas Telford. This book was released on 2000 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: - Introduction - Operational requirements - Weather forecasting - Support technology, research and development - Specialist plant and transport - Privatization - Appendix

Winter Maintenance Performance Measurement Using Friction Testing

Author : Sany Zein
Publisher :
ISBN 13 : 9781551872735
Total Pages : 0 pages
Book Rating : 4.8/5 (727 download)

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Book Synopsis Winter Maintenance Performance Measurement Using Friction Testing by : Sany Zein

Download or read book Winter Maintenance Performance Measurement Using Friction Testing written by Sany Zein and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Gravel Roads

Author : Ken Skorseth
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Gravel Roads by : Ken Skorseth

Download or read book Gravel Roads written by Ken Skorseth and published by . This book was released on 2000 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.

Managing Roadway Snow and Ice Control Operations

Author : David A. Kuemmel
Publisher : Transportation Research Board
ISBN 13 : 9780309056663
Total Pages : 68 pages
Book Rating : 4.0/5 (566 download)

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Book Synopsis Managing Roadway Snow and Ice Control Operations by : David A. Kuemmel

Download or read book Managing Roadway Snow and Ice Control Operations written by David A. Kuemmel and published by Transportation Research Board. This book was released on 1994 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This synthesis report will be of interest to transportation agency maintenance engineers, managers, and operators and others involved with roadway snow and ice control including safety engineers, traffic engineers, and law enforcement agency personnel. It presents information on the state of the practice in managing roadway snow and ice control considering both rural and urban locations. The document describes the developments that have occurred during the past 20 years to improve winter maintenance. This report of the Transportation Research Board discusses winter maintenance policies and provides examples for state, city, and county agencies. Included in the discussion of winter maintenance policies are issues such as: levels of service, public relations, liability for services, and experimenting with new policies. Additional information is included on estimating winter maintenance benefits and costs; personnel and management issues; weather information systems; and materials, equipment, and facilities for winter maintenance."--Avant-propos.

Winter Highway Operations

Author : Steven M. Conger
Publisher : Transportation Research Board
ISBN 13 : 0309097479
Total Pages : 76 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Winter Highway Operations by : Steven M. Conger

Download or read book Winter Highway Operations written by Steven M. Conger and published by Transportation Research Board. This book was released on 2005 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 344: Winter Highway Operations examines changes that occurred between 1994 and 2004 to practices and strategies used to control the impacts of winter weather on the safe and efficient movement of traffic.

Terraqué

Author : Eugène Guillevic
Publisher :
ISBN 13 : 9782070167548
Total Pages : 195 pages
Book Rating : 4.1/5 (675 download)

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Book Synopsis Terraqué by : Eugène Guillevic

Download or read book Terraqué written by Eugène Guillevic and published by . This book was released on 1946 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Feasibility of Using Friction Indicators to Improve Winter Maintenance Operations and Mobility

Author : Imad L. Al-Qadi
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (522 download)

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Book Synopsis Feasibility of Using Friction Indicators to Improve Winter Maintenance Operations and Mobility by : Imad L. Al-Qadi

Download or read book Feasibility of Using Friction Indicators to Improve Winter Maintenance Operations and Mobility written by Imad L. Al-Qadi and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Assessment of the Performance of Several Roadway Mixes Under Rain, Snow, and Winter Maintenance Activities

Author : Gerardo W. Flintsch
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (2 download)

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Book Synopsis Assessment of the Performance of Several Roadway Mixes Under Rain, Snow, and Winter Maintenance Activities by : Gerardo W. Flintsch

Download or read book Assessment of the Performance of Several Roadway Mixes Under Rain, Snow, and Winter Maintenance Activities written by Gerardo W. Flintsch and published by . This book was released on 2004 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to assess the relative functional performance, including skid resistance and splash and spray, of five hot-mix-asphalt (HMA) surfaces and a tinned portland cement concrete highway surface during controlled wet and wintry weather events. The study compared the way that these surfaces respond to various deicing and anti-icing snow removal and ice control techniques under artificial wintry conditions. In addition, the splash and spray characteristics of the surfaces during and immediately after rain were also evaluated. The study focused on the surfaces placed within the all-weather testing area at the Virginia Smart Road. The winter maintenance techniques tested include the application of sodium chloride (salt) in granular, pre-wetted, and liquid forms. The snow removal and ice control measures that were used followed the recommendation of the FHWA Project T & E 28 and variations thereof. The experiments to compare the splash and spray characteristics of the mixes were conducted using artificial rain. The study defined and tested a methodology for testing winter maintenance operations under controlled, artificial wintry events. The winter maintenance test results were inconclusive, as the various maintenance treatments were unable to significantly improve the functional condition of the road. Under the temperature and precipitation conditions encountered, there were no significant differences in the performance of the different surface mixes tested. However, conditions encountered did not correspond to conditions normally encountered with natural snow. The researcher concluded that at temperatures at and just below freezing, artificial snow might not be appropriate for evaluating the effectiveness of winter maintenance chemicals. Studies that depend upon imitating the on-road attributes of natural snow, such as testing effectiveness of winter maintenance chemicals, should adhere to the ideal temperature-humidity guidelines for the snowmaking equipment. The open-graded friction course appears to have enhanced spray and splash performance when compared with the dense HMA surface mixes; however, a more objective measure of splash and spray characteristics of the surfaces is needed to quantify the beneficial effect of this type of mixes. No visual difference in performance was observed among the other mixes.

De årlige ewangelier och epistlar, jämte böne-boken, med flera stycken, som på följande sida äro uptecknade. Stockholm, uplagde i kgl. ordens-tryckeriet med stående styl, år 1811

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Author :
Publisher :
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.:/5 (186 download)

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Book Synopsis De årlige ewangelier och epistlar, jämte böne-boken, med flera stycken, som på följande sida äro uptecknade. Stockholm, uplagde i kgl. ordens-tryckeriet med stående styl, år 1811 by :

Download or read book De årlige ewangelier och epistlar, jämte böne-boken, med flera stycken, som på följande sida äro uptecknade. Stockholm, uplagde i kgl. ordens-tryckeriet med stående styl, år 1811 written by and published by . This book was released on 1811 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: