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Guardrail Evaluation For Hazards On Low Volume Rural Roads In Kansas
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Book Synopsis Guardrail Evaluation for Hazards on Low-volume Rural Roads in Kansas by : Peng Wang
Download or read book Guardrail Evaluation for Hazards on Low-volume Rural Roads in Kansas written by Peng Wang and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Rural crashes, specifically roadside crashes, account for a disproportionately high number of fatal vehicle crashes in the United States. In 2017, the fatality ratios of rural crashes in Kansas was higher than the national average. Therefore, the Kansas Department of Transportation (KDOT) is continuously seeking to prevent and reduce rural roadside crashes. This research project was funded by KDOT to study the benefit-cost ratios of implementing guardrails to shield bridges, culverts, and embankments on low-volume rural roads in Kansas to reduce vehicle crash fatalities and decrease rural transportation expenditures. This study utilized RSAPv3 simulation because it implements previous crash statistics and could be readily updated with local data. With the help of KDOT staff, the research team synthesized traffic operation data and geometric features on rural roads in Kansas and carried out crash simulations using RSAPv3 to determine if the benefits of guardrail implementation exceeded the corresponding costs. The results were intended to help local engineers decide whether to implement guardrails in roadside locations with hazards. Meanwhile, the simulation also revealed significant contributing factors to rural roadside crashes. Survey results and simulation outcomes showed similar patterns. Based on project results, the benefit-cost ratios did not justify the implementation of new guardrails for bare culverts or bare embankments on rural roads in Kansas. However, W-beam guardrails were efficiently implemented on bridges with medium-hazard-level edges without attaching bridge-approach guardrails. Likewise, for bridges with TL-2 bridge rails, study results did not justify implementing bridge-approach guardrails.
Book Synopsis Guardrail Evaluation for Hazards on Low-volume Rural Roadways in Kansas Using RSAP by : Peng Wang
Download or read book Guardrail Evaluation for Hazards on Low-volume Rural Roadways in Kansas Using RSAP written by Peng Wang and published by . This book was released on 2022 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study utilized Roadside Analysis Program Version 3 (RSAPv3) simulation because it implements previous crash statistics and could be readily updated with local data. With the help of KDOT staff, the research team synthesized traffic operation data and geometric features on rural roads in Kansas and carried out crash simulations using RSAPv3 to determine if the benefits of guardrail implementation exceeded the corresponding costs. The results were intended to help local engineers decide whether to implement guardrails in roadside locations with hazards. Meanwhile, the simulation also revealed significant contributing factors to rural roadside crashes. Survey results and simulation outcomes showed similar patterns. Based on project results, the benefit-cost ratios did not justify the implementation of new guardrails for bare culverts or bare embankments on rural roads in Kansas. However, W-beam guardrails were efficiently implemented on bridges with medium-hazard-level edges without bridge-approach guardrail. Likewise, for bridges with TL-2 bridge rails, study results did not justify implementing bridge-approach guardrail.
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.
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 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 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.
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 Analysis of Policies for Safety Improvements on Low-volume Rural Roadways by : Schwartz, David J.
Download or read book Analysis of Policies for Safety Improvements on Low-volume Rural Roadways written by Schwartz, David J. and published by . This book was released on 1994 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to determine the adequacy with which safety problems on low-volume rural roadways were addressed by the four states of Federal Region VII (Iowa, Kansas, Missouri, and Nebraska), a review was made of the states' safety policies. After reviewing literature dealing with the identification of hazardous locations, evaluation methodologies, and system-wide safety improvements, a survey of the states' safety policies was conducted. An official from each state was questioned about the various aspects and procedures dealing with safety improvements. After analyzing and comparing the remarkably diverse policies, recommendations were made in the form of a model safety program. This program included special modifications that would help remediate hazards on low-volume rural roadways. Especially encouraged is a system-wide approach to improvement which would cover all parts of the highway system, not just urban and high-volume roadways.
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 Highway Safety Requirement for Low-volume Rural Roads by : John Charles Glennon
Download or read book Highway Safety Requirement for Low-volume Rural Roads written by John Charles Glennon and published by . This book was released on 19?? with total page 240 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 Crossroads 2000 Proceedings, August 19-20, 1998, Iowa State University, Ames, Iowa by : Marcia Brink
Download or read book Crossroads 2000 Proceedings, August 19-20, 1998, Iowa State University, Ames, Iowa written by Marcia Brink and published by Institut Fur Geographie Der Universitat Munchen. This book was released on 1998 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Safety Treatments for Roadside Culverts by : Francisco Daniel B. Albuquerque
Download or read book Evaluation of Safety Treatments for Roadside Culverts written by Francisco Daniel B. Albuquerque and published by . This book was released on 2009 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Roadside cross-drainage culverts have been found to impact vehicle accident injury levels. Designers have commonly used three safety treatments to protect errant drivers from culvert accidents. These treatments have included: culvert extension, guardrail installation and grating. In order to define which safety treatment is the most appropriate, benefit-cost analysis has used accident cost reduction to estimate societal gains earned by using any safety treatment. The purpose of this study was to estimate accident costs for a wide range of roadway and roadside characteristics so that designers can calculate benefit/cost ratios for culvert safety treatment options under any particular scenario. This study began with conducting a parametric study in order to find variables which have significant impact on accident cost changes. The study proceeded with highway scenario modeling which included scenarios with different values for combinations of roadway and roadside variables. These variables were chosen based upon findings from the parametric study and their values were assigned based upon highway classification. This study shows that the use of different culvert safety treatments should be flexible to roadway and roadside characteristics. It also shows that culvert extension and grating were the safety treatments found to produce the lowest accident costs for all highway scenarios modeled. Therefore, it is believed that the expanded adoption of culvert extension and culvert grates can improve overall highway safety.
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 Positive Guidance in Traffic Control by : Gerson J. Alexander
Download or read book Positive Guidance in Traffic Control written by Gerson J. Alexander and published by . This book was released on 1975 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The progress that has been made in developing the positive guidance concept is documented, and the meaning of positive guidance, the philosophy of driver performance upon which it is based the nature of the driving task at those locations where positive guidance is applicable, and a procedure for its application are discussed. This report describes what must be done to improve the information system at hazardous locations. Positive guidance which is an information system matched to the facility characteristics and driver attributes, is based on the premise that a driver can be given sufficient information where he needs it and in the form that he can best use to avoid hazards.
Download or read book NCHRP Report 612 written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pedestrian Facilities Users Guide: Providing Safety and Mobility by : Charles V. Zegeer
Download or read book Pedestrian Facilities Users Guide: Providing Safety and Mobility written by Charles V. Zegeer and published by DIANE Publishing. This book was released on 2002 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This guide is intended to provide information on how to identify safety and mobility needs for pedestrians with the roadway right-of-way. Useful for engineers, planners, safety professionals and decision-makers, the guide covers such topics as: the Walking Environment including sidewalks, curb ramps, crosswalks, roadway lighting and pedestrian over and under passes; Roadway Design including bicycle lanes, roadway narrowing, reducing the number of lanes, one-way/two-way streets, right-turn slip lanes and raised medians; Intersections with roundabouts, T-intersections and median barriers; and Traffic calming designs.
