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Guidelines For Guardrail On Low Volume Roads
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Book Synopsis Guidelines for Guardrail on Low-volume Roads by : E. D. Arnold
Download or read book Guidelines for Guardrail on Low-volume Roads written by E. D. Arnold and published by . This book was released on 1990 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Guardrail is a type of longitudinal barrier installed along a roadside to shield vehicles from hazards. Guardrail is itself a hazard and should be installed only if it would reduce the severity of accidents. Accordingly, the American Association of State Highway and Transportation Officials (AASHTO) has guidelines that can be used to evaluate the need for guardrail. The Virginia Department of Transportation (VDOT) has, for the most part, adopted these guidelines for its interstate, primary, and arterial road systems. However, these guidelines are generally based on information concerning high-speed, high-volume roads; consequently, VDOT bases decisions regarding the need for guardrail on its secondary road system entirely on engineering judgment. Guidelines are needed to assist in evaluating the need for guardrail on secondary roads, which most typically have low-volume and low-speed traffic. The primary advantage of such guidelines is that guardrail will be more uniformly installed on low-volume roads. Final decisions regarding the use of guardrail would be dependent on sound engineering judgment; however, all decision-making would at least be based on the same methodology and analyses. Guidelines and uniform installations are of considerable benefit in deciding questions of liability. Formal guidelines should also increase the safety of the motoring public on low volume roads. Finally, they will provide for a more cost-effective use of guardrail. The purpose of this research was to develop such guidelines. The original scope of the study was to develop guidelines from existing practices as reported in the literature and from a survey of other states. However, it was concluded from that research that VDOT needed guidelines based on Virginia-specific data. Accordingly, the scope of the study was expanded to include the application of the computer program ROADSIDE, which was used to develop guidelines to determine whether guardrail is needed on fill embankments and for fixed objects on secondary roads in Virginia. The former guidelines were defined in terms of volumes and fill heights for a given slope, whereas the latter guidelines were defined in terms of a required clear zone for a given volume. It is recommended that VDOT consider adopting the guidelines developed in the report to evaluate the need for guardrail on its secondary roads.
Book Synopsis Use of Guardrail on Low-volume Roads According to Safety and Cost Effectiveness by : Margaret Joanna Rys
Download or read book Use of Guardrail on Low-volume Roads According to Safety and Cost Effectiveness written by Margaret Joanna Rys and published by . This book was released on 1999 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to develop guidelines for the use of guardrail on low-volume roads (LVR) in Kansas according to safety and cost effectiveness. A comprehensive review of the research literature was conducted to explore and gather information on the use of guardrail on LVR according to safety and cost effectiveness. The purpose of this information search was to identify the general elements used to determine the need for guardrail on LVR and to review any specific guidelines already in use by other states. The principle findings from this literature review are presented in this report.
Author :American Association of State Highway and Transportation Officials. Task Force for Roadside Safety Publisher : ISBN 13 : Total Pages :560 pages Book Rating :4.0/5 ( download)
Book Synopsis Roadside Design Guide by : American Association of State Highway and Transportation Officials. Task Force for Roadside Safety
Download or read book Roadside Design Guide written by American Association of State Highway and Transportation Officials. Task Force for Roadside Safety and published by . This book was released on 1989 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidelines for Roadside Safety on Rural Low-volume Roads by :
Download or read book Guidelines for Roadside Safety on Rural Low-volume Roads written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of barrier and guardrail design, and/or use, is a very complicated subject, open to many different designs and guidelines. Barrier rail considerations are a subset of roadside safety treatments. There are many sophisticated computer models now available to evaluate roadside safety, for example, ROADSIDE. The results of recent research have provided reasonably good guidelines for roadside safety, barrier rail and end treatments on state highways and other major roads. Generally these sophisticated models and guidelines do not apply to Low-Volume Rural Roads (LVRR). Local governments have tens of thousands of miles of LVRR where rights-of way are narrow, clear zones and traversable slopes cannot be provided and budgets are inadequate for a multitude of competing problems. The Kansas Department of Transportation (KDOT) contracted with the authors to review the state-of-the-art of roadside safety, interview local road personnel, study local roadside situations and develop guidelines on low-volume roads, roadside safety and barrier rail use. The computer program ROADSIDE was adapted to LVRR conditions and simplified guidelines for its use were developed for LVRR conditions. Finally, for those road jurisdictions requiring more simple guidelines, without the use of complicated computer program, computer results basesd on a range of LVRR conditions were complied and presented in a manual for easy use by personnel with responsibility for LVRR safety. The paper presents the results of the study, the highlights of the manual and the background material on which it was based. For the covering abstract of this conference see IRRD number 872978.
Author :American Association of State Highway and Transportation Officials. Task Force for Roadside Safety Publisher :AASHTO ISBN 13 :1560515090 Total Pages :345 pages Book Rating :4.5/5 (65 download)
Book Synopsis Roadside Design Guide by : American Association of State Highway and Transportation Officials. Task Force for Roadside Safety
Download or read book Roadside Design Guide written by American Association of State Highway and Transportation Officials. Task Force for Roadside Safety and published by AASHTO. This book was released on 2011 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Roadside Design Guide presents a synthesis of current information and operating practices related to roadside safety and is written in dual units-metric and U.S. Customary. This book is a guide. It is not a standard, nor is it a design policy. It is intended to use as a resource document from which individual highway agencies can develop standards and policies. Although much of the material in the guide can be considered universal in its application, several recommendations are subjective in nature and may need modification to fit local conditions. However, it is important that significant deviations from the guide be based on operational experience and objective analysis. The 2011 edition of the AASHTO Roadside Design Guide has been updated to include hardware that has met the evaluation criteria contained in the National Cooperative Highway Research Program (NCHRP) Report 350: Recommended Procedures for the Safety Performance Evaluation of Highway Features and begins to detail the most current evaluation criteria contained under the Manual for Assessing Safety Hardware, 2009 (MASH). For the most part, roadside hardware tested and accepted under older guidelines that are no longer applicable has not been excluded in this edition." -- AASHTO website.
Book Synopsis Guardrail and Bridge Rail Recommendations for Very Low-volume Local Roads in Kansas by : Ronald J. Seitz
Download or read book Guardrail and Bridge Rail Recommendations for Very Low-volume Local Roads in Kansas written by Ronald J. Seitz and published by . This book was released on 2017 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2014, the Kansas Department of Transportation undertook a study, entitled "Guardrail and Bridge Rail Recommendations for Very Low-Volume Local Roads in Kansas" (Report No. KS-14-16, Seitz & Salfrank, 2014), to establish practical risk-based guidelines and policies for bridge rails and guardrails on low-volume local roads in the state. The purpose of the effort outlined in this report is to expand on the work performed in the 2014 study and to supplement the recommendations to include bridges up to 100 feet in length and roads with ADT up to 100 vehicles per day. The primary tasks to be completed will include: • Analysis of bridge rail/guardrail crashes on bridges with length between 50 feet and 100 feet and located on a local road with ADT between 50 and 100 vehicles per day. • Benefit-cost analyses based on these parameters and typical location features. Based on the results of this study, it is recommended that the recommendations of Report No. KS-14-16 be expanded to include bridge rails installed on new or rehabilitated bridges up to 100 feet long with traffic volume up to 100 vpd.
Book Synopsis Guidelines for Guard Rail Installation on Embankments and at Bridge Ends by : Charles E. Dare
Download or read book Guidelines for Guard Rail Installation on Embankments and at Bridge Ends written by Charles E. Dare and published by . This book was released on 1992 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design and Traffic Control Guidelines for Low-volume Rural Roads by :
Download or read book Design and Traffic Control Guidelines for Low-volume Rural Roads written by and published by . This book was released on 1964 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Book Synopsis Guidelines for guard rail installation on embankments and at bridge ends by :
Download or read book Guidelines for guard rail installation on embankments and at bridge ends written by and published by . This book was released on 1992 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guardrail and Bridge Rail Recommendations for Very Low-volume Local Roads in Kansas by : Ronald J. Seitz
Download or read book Guardrail and Bridge Rail Recommendations for Very Low-volume Local Roads in Kansas written by Ronald J. Seitz and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The determination of warrants for bridge railing and approach guardrails is a fundamental roadside safety issue. These are specialized roadside safety barriers that are intended to capture and smoothly redirect errant vehicles that leave the roadway either on the bridge itself or on the approach to the bridge. The Federal Highway Administration (FHWA) requires tested bridge rails and approach guardrails on all National Highway System (NHS) Roadways. However, states are given the discretion to develop their own policies for non-NHS roads. Currently in Kansas, all bridges constructed with federal funds are required to have one of the Kansas Department of Transportation's (KDOT) standard bridge rails (either corral rail or barrier curb) and approach guardrail (including transition and end treatment). These systems are expensive in terms of the initial cost of a bridge and they have additional safety and maintenance considerations that may outweigh the expected safety benefits on many low-volume applications. In an effort to maximize the safety benefits of the limited funding, KDOT undertook the effort outlined in this report to establish practical risk-based guidelines and policies for bridge rails and guardrails on low-volume local roads.
Book Synopsis Highway Safety Requirements for Low-volume Rural Roads by : John C. Glennon
Download or read book Highway Safety Requirements for Low-volume Rural Roads written by John C. Glennon and published by . This book was released on 1978 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bridge Rail and Approach Railing for Low-volume Roads in Iowa by : Jake J. Bigelow
Download or read book Bridge Rail and Approach Railing for Low-volume Roads in Iowa written by Jake J. Bigelow and published by . This book was released on 2010 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Guidelines for bridge rail and approach guardrails can help improve the safety benefits of these devices while minimzing [i.e., minimizing] costs.
Book Synopsis Trade-offs Between Geometric Design Standards and Safety for Low Volume Roads by : Aram Kornsombut
Download or read book Trade-offs Between Geometric Design Standards and Safety for Low Volume Roads written by Aram Kornsombut and published by . This book was released on 1978 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geometric design standards have not been developed specifically for low volume roads. Design standards and criteria are extrapolated from higher standard roadways that are often not relevant to low volume roads. Safety is a primary criterion used for selection of design standards along with economic, financial, social and environment factors. This study attempts to determine trade-offs of various design standards and designs based on safety and economic criteria. It also summarizes existing geometric design standards that are employed by federal, state and county governments. A methodology for selection of design standards for low volume roads employing safety criteria is developed. The study approach is based on data and relationships from previous research. Accident costs cited by National Safety Council are adopted for analysis. Procedures are developed to determine the balance between design standards and accident costs. Ten-foot lane width and two-foot shoulder width are found to be reasonable for low volume situations. Horizontal and vertical alignments affect safety, vehicle running costs and travel times. Guardrail warrants of low volume roads differ from that of high volume roads. The balance and trade-offs between guardrail installation cost and accident cost expected for a given embankment geometry are evaluated. The balance between a clear zone from the edge of pavement and the accident cost savings has also been developed. It is recommended that a comparison between the accident savings due to roadway improvement and the incremental construction cost must be made to evaluate safety and economy effectively. An approach to evaluate the level of safety relative to design is developed for decision making.
Book Synopsis A Policy on Design Standards--interstate System by :
Download or read book A Policy on Design Standards--interstate System written by and published by Aashto. This book was released on 2005 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Use of Guardrail on Low-volume Roads According to Safety and Cost Effectiveness by : Margaret J. Rys
Download or read book Use of Guardrail on Low-volume Roads According to Safety and Cost Effectiveness written by Margaret J. Rys and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Economics of Design Standards for Low-volume Rural Roads by : Clarkson Hill Oglesby
Download or read book Economics of Design Standards for Low-volume Rural Roads written by Clarkson Hill Oglesby and published by . This book was released on 1969 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: he objective of this study is to examine prevailing rural design standards to determine their economic justification. This would evaluate in depth the cost of some of the most significant design practices (for example, roadway and shoulder width and surfacing type). Resulting user benefits, such as operating, accident and time savings would be weighed against the cost of individual features. In addition to the analysis of the user-benefit relationships, the economic and social consequences to local residents, businesses and communities should be studied and a suitable means of including them in the reckoning of warranted levels of improvement should be found.
