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Evaluation Of Safety Effectiveness Of Composite Shoulders Wide Unpaved Shoulders And Wide Paved Shoulders In Kansas
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Book Synopsis Evaluation of Safety Effectiveness of Composite Shoulders, Wide Unpaved Shoulders, and Wide Paved Shoulders in Kansas by : Huanghui Zeng
Download or read book Evaluation of Safety Effectiveness of Composite Shoulders, Wide Unpaved Shoulders, and Wide Paved Shoulders in Kansas written by Huanghui Zeng and published by . This book was released on 2013 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: Incremental increases in paved shoulder widths have been studied and are shown in the Highway Safety Manual. While each incremental increase in shoulder width is beneficial, there is evidence that suggests the relationship between safety improvements and incremental increases in shoulder width may not be linear. It is possible that the net safety gains for wider shoulder increments are not as high as incremental benefits of the initial increments of shoulder width. Thus, a highway agency may have opportunities for greater system-wide safety benefits from paving longer roadway segments with a narrower shoulder rather than paving shorter roadway segments with a wider shoulder. This approach is tempered by consideration of long term degradation in shoulder width and slope over the life of a facility due to normal pavement maintenance activities. Practitioners must balance long-term sustainability, cost, expected operations and safety benefits of proposed improvements. For new and reconstruction projects, the cost of additional shoulder width is minimal compared to retrofitting an existing facility. Determining the benefits of various shoulder improvement approaches fits within the Kansas Department of Transportation's (KDOT) "Practical Improvements" approach to maximize benefits relative to the construction and maintenance costs required. Among the 8,300 miles of rural two-lane highways in Kansas, approximately 25 percent of them are equipped with composite shoulders consisting of three feet of pavement with the remainder aggregate or turf. Their safety effectiveness was studied using the Empirical Bayes (EB) approach and the cross-sectional approach. Three developed Safety Performance Functions (SPFs) were used to create Kansas-specific Crash Modification Factors (CMFs) for composite shoulders compared with segments with no or unpaved shoulders. It was found that upgrading narrow unpaved shoulders to composite shoulders can reduce shoulder related crashes by up to 61 percent and fatal and injury crashes by 31 percent. It was also found that wide paved shoulders can provide more safety benefit than composite shoulders, and wide unpaved shoulders can provide slightly less safety benefit than composite shoulders. Based on these results, 20-year projections were developed projecting the safety effectiveness that can be achieved through implementing these safety improvements.
Book Synopsis Safety Benefits of Paved Shoulders by : Shauna L. Hallmark
Download or read book Safety Benefits of Paved Shoulders written by Shauna L. Hallmark and published by . This book was released on 2009 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paved shoulders can help accommodate non-motorized vehicles, allow errant vehicles to recover, and effectively reduce crash numbers.
Book Synopsis Impact of Shoulder Width and Median Width on Safety by :
Download or read book Impact of Shoulder Width and Median Width on Safety written by and published by National Academies Press. This book was released on 2009 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report contains the findings of research performed to quantify the safety and operational impacts of design element trade-offs and their associated risks. The report details the research performed and includes specific recommended crash prediction models and Accident Modification Factors (AMFs) for shoulder width and median width on rural four-lane roads.
Download or read book NCHRP Report 633 written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Safety Evaluation of Three-foot Paved Shoulder Projects in 1977 by : Vernon M. Jarvi
Download or read book A Safety Evaluation of Three-foot Paved Shoulder Projects in 1977 written by Vernon M. Jarvi and published by . This book was released on 1982 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis State of the Art Review of Paved Shoulders by : Josette M. Portigo
Download or read book State of the Art Review of Paved Shoulders written by Josette M. Portigo and published by . This book was released on 1974 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Safety Benefits and Potential Crash Migration Due to Shoulder Rumble Strip Installation on Connecticut Freeways by : Erika Birgit Smith
Download or read book Evaluation of Safety Benefits and Potential Crash Migration Due to Shoulder Rumble Strip Installation on Connecticut Freeways written by Erika Birgit Smith and published by . This book was released on 2004 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidance for Implementation of the AASHTO Strategic Highway Safety Plan by :
Download or read book Guidance for Implementation of the AASHTO Strategic Highway Safety Plan written by and published by Transportation Research Board. This book was released on 2003 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transportation Decision Making by : Kumares C. Sinha
Download or read book Transportation Decision Making written by Kumares C. Sinha and published by John Wiley & Sons. This book was released on 2011-09-09 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: This pioneering text provides a holistic approach to decisionmaking in transportation project development and programming, whichcan help transportation professionals to optimize their investmentchoices. The authors present a proven set of methodologies forevaluating transportation projects that ensures that all costs andimpacts are taken into consideration. The text's logical organization gets readers started with asolid foundation in basic principles and then progressively buildson that foundation. Topics covered include: Developing performance measures for evaluation, estimatingtravel demand, and costing transportation projects Performing an economic efficiency evaluation that accounts forsuch factors as travel time, safety, and vehicle operatingcosts Evaluating a project's impact on economic development and landuse as well as its impact on society and culture Assessing a project's environmental impact, including airquality, noise, ecology, water resources, and aesthetics Evaluating alternative projects on the basis of multipleperformance criteria Programming transportation investments so that resources can beoptimally allocated to meet facility-specific and system-widegoals Each chapter begins with basic definitions and concepts followedby a methodology for impact assessment. Relevant legislation isdiscussed and available software for performing evaluations ispresented. At the end of each chapter, readers are providedresources for detailed investigation of particular topics. Theseinclude Internet sites and publications of international anddomestic agencies and research institutions. The authors alsoprovide a companion Web site that offers updates, data foranalysis, and case histories of project evaluation and decisionmaking. Given that billions of dollars are spent each year ontransportation systems in the United States alone, and that thereis a need for thorough and rational evaluation and decision makingfor cost-effective system preservation and improvement, this textshould be on the desks of all transportation planners, engineers,and educators. With exercises in every chapter, this text is anideal coursebook for the subject of transportation systems analysisand evaluation.
Download or read book Popular Mechanics written by and published by . This book was released on 2000-01 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular Mechanics inspires, instructs and influences readers to help them master the modern world. Whether it’s practical DIY home-improvement tips, gadgets and digital technology, information on the newest cars or the latest breakthroughs in science -- PM is the ultimate guide to our high-tech lifestyle.
Book Synopsis National Highway Needs Report by : United States. Dept. of Transportation
Download or read book National Highway Needs Report written by United States. Dept. of Transportation and published by . This book was released on 1968 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Evaluation of the 13 Controlling Criteria for Geometric Design by : Douglas W. Harwood
Download or read book Evaluation of the 13 Controlling Criteria for Geometric Design written by Douglas W. Harwood and published by . This book was released on 2014 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: "TRB's National Cooperative Highway Research Program (NCHRP) Report 783: Evaluation of the 13 Controlling Criteria for Geometric Design describes the impact of the controlling roadway design criteria on safety and operations for urban and rural roads."--Publisher description.
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 Superpave Mix Design by : Asphalt Institute
Download or read book Superpave Mix Design written by Asphalt Institute and published by . This book was released on 2001-01-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Highway Subdrainage Design by : Lyle K. Moulton
Download or read book Highway Subdrainage Design written by Lyle K. Moulton and published by . This book was released on 1980 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design Guidelines for the Control of Blowing and Drifting Snow by : Ronald D. Tabler
Download or read book Design Guidelines for the Control of Blowing and Drifting Snow written by Ronald D. Tabler and published by Strategic Highway Research Program (Shrp). This book was released on 1994 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
