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Download or read book Low-cost Treatments for Horizontal Curve Safety written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (1 download)
Download or read book Low-cost Treatments for Horizontal Curve Safety written by and published by . This book was released on 2006 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nearly 25 percent of fatal crashes occur at or near a horizontal curve. Hence, addressing the safety problem at horizontal curves is one of the 22 emphasis areas of the Strategic Highway Safety Plan prepared by AASHTO. Also, crashes at horizontal curves are a big component of the road departure crash problem, which is one of FHWA's three focus areas. This publication was prepared to provide practical information on low-cost treatments that can be applied at horizontal curves to address identified or potential safety problems. The publication concisely describes the treatment; shows examples; suggests when the treatment might be applicable; provides design features; and where available, provides information on the potential safety effectiveness and costs. The treatments include: Basic traffic signs and markings found in the MUTCD; Enhanced traffic control devices; Additional traffic control devices not found in the MUTCD; Rumble strips; Minor roadway improvements; Innovative and experimental treatments. The publication concludes with a description of maintenance activities that should be conducted to keep the treatments effective.
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ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.3/5 (555 download)
Download or read book Our Nation's Highways written by and published by . This book was released on 1995 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (13 download)
Download or read book Safety evaluation of improved curve delineation written by and published by . This book was released on 2009 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Federal Highway Administration (FHWA) organized a pooled fund study of 26 States to evaluate low-cost safety strategies as part of its strategic highway safety effort. One of the strategies chosen to be evaluated for this study was improving curve delineation. Geometric, traffic, and crash data were obtained at 89 treated curves in Connecticut and 139 treated curves in Washington to determine the safety effectiveness of improved curve delineation. Treatments varied by site and included new chevrons, horizontal arrows, and advance warning signs as well as the improvement of existing signs using fluorescent yellow sheeting. All sites were on two lane rural roads. To account for potential selection bias and regression to the mean, an Empirical Bayes (EB) before after analysis was conducted. The aggregate results revealed an 18% reduction in injury and fatal crashes, a 27.5% reduction in crashes during dark conditions, and a 25% reduction in lane departure crashes during dark conditions. The reductions were more prominent at locations with higher traffic volumes and sharper curves (curve radius less than 492 ft) and in locations with more hazardous roadsides (roadside hazard rating (RHR) of 5 or higher) compared to locations with less hazardous roadsides (RHR of 4 or lower). In addition, curves where more signs were either added or replaced (with a more retroreflective material) within the curve experienced larger reductions in crashes. An economic analysis revealed that improving curve delineation with signing improvements is a very cost effective treatment with the benefit cost ratio exceeding 8:1.
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Publisher : AASHTO
ISBN 13 : 1560514280
Total Pages : 87 pages
Book Rating : 4.5/5 (65 download)
Download or read book Guide for Pavement Friction written by and published by AASHTO. This book was released on 2008 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report contains guidelines and recommendations for managing and designing for friction on highway pavements. The contents of this report will be of interest to highway materials, construction, pavement management, safety, design, and research engineers, as well as others concerned with the friction and related surface characteristics of highway pavements.
Author : American Association of State Highway and Transportation Officials. Task Force for Roadside Safety
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ISBN 13 :
Total Pages : 560 pages
Book Rating : 4.0/5 ( download)
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:
Author : John L. Campbell
Publisher : Transportation Research Board
ISBN 13 : 0309117518
Total Pages : 38 pages
Book Rating : 4.3/5 (91 download)
Download or read book Human Factors Guidelines for Road Systems written by John L. Campbell and published by Transportation Research Board. This book was released on 2008 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: NCHRP report 600 explores human factors principles and findings for consideration by highway designers and traffic engineers. The report is designed to help the nonexpert in human factors to consider more effectively the roadway user's capabilities and limitations in the design and operation of highway facilities.
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ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (3 download)
Download or read book Public Roads written by and published by . This book was released on 1997 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.3/5 (121 download)
Download or read book Cost-effectiveness and safety of alternative roadway delineation treatments for rural two-lane highways written by and published by . This book was released on 1978 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under this research study, the effect of various delineation treatments on accident rates was assessed by analyzing accident data from more than 500 roadway sites in 10 States for tangent, winding and isolated horizontal curve sections on two-lane rural highways. Cost-benefit and cost models for evaluating specific delineation treatments were developed and guidelines formulated by executing the cost-benefit models for selected delineation treatments.
Author : Michael Paul Pratt
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (118 download)
Download or read book Guidelines and Evaluation Framework for Horizontal Curve Wet-surface Safety Analysis written by Michael Paul Pratt and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Researchers calibrated detailed safety prediction models to account for the effects of key curve characteristics, including geometry, pavement variables (particularly skid resistance), and weather patterns. Additionally, researchers developed estimates of the service life for various surface treatments that may be used to increase skid resistance. By combining safety prediction models, weather data, and service life data, researchers created guidelines and a life-cycle benefit-cost evaluation framework to assist practitioners in choosing effective safety treatments for curves. This document describes the guidelines and spreadsheet -based evaluation framework and provides analysts with a User Guide for the framework.
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ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.:/5 (31 download)
Download or read book Cost-effectiveness and Safety of Alternative Roadway Delineation Treatments for Rural Two-lane Highways: Appendix B, development and description of computerized data base written by and published by . This book was released on 1978 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under this research study, the effect of various delineation treatments on accident rates was assessed by analyzing accident data from more than 500 roadway sites in 10 States for tangent, winding and isolated horizontal curve sections on two-lane rural highways. Cost-benefit and cost models for evaluating specific delineation treatments were developed and guidelines formulated by executing the cost-benefit models for selected delineation treatments.
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Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (31 download)
Download or read book Cost-effectiveness and Safety of Alternative Roadway Delineation Treatments for Rural Two-lane Highways: Appendix A, site selection and data collection written by and published by . This book was released on 1978 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under this research study, the effect of various delineation treatments on accident rates was assessed by analyzing accident data from more than 500 roadway sites in 10 States for tangent, winding and isolated horizontal curve sections on two-lane rural highways. Cost-benefit and cost models for evaluating specific delineation treatments were developed and guidelines formulated by executing the cost-benefit models for selected delineation treatments.
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Publisher :
ISBN 13 :
Total Pages : 284 pages
Book Rating : 4.:/5 (31 download)
Download or read book Cost-effectiveness and Safety of Alternative Roadway Delineation Treatments for Rural Two-lane Highways: Appendix C, statistical model development written by and published by . This book was released on 1978 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under this research study, the effect of various delineation treatments on accident rates was assessed by analyzing accident data from more than 500 roadway sites in 10 States for tangent, winding and isolated horizontal curve sections on two-lane rural highways. Cost-benefit and cost models for evaluating specific delineation treatments were developed and guidelines formulated by executing the cost-benefit models for selected delineation treatments.
Author : Michael Paul Pratt
Publisher :
ISBN 13 :
Total Pages : 31 pages
Book Rating : 4.:/5 (18 download)
Download or read book Guidelines and Evaluation Framework for Horizontal Curve Wet-surface Safety Analysis written by Michael Paul Pratt and published by . This book was released on 2018 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Researchers calibrated detailed safety prediction models to account for the effects of key curve characteristics, including geometry, pavement variables (particularly skid resistance), and weather patterns. Additionally, researchers developed estimates of the service life for various surface treatments that may be used to increase skid resistance. By combining safety prediction models, weather data, and service life data, researchers created guidelines and a life-cycle benefit-cost evaluation framework to assist practitioners in choosing effective safety treatments for curves. This document describes the guidelines and spreadsheet -based evaluation framework and provides analysts with a User Guide for the framework.
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Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (31 download)
Download or read book Cost-effectiveness and Safety of Alternative Roadway Delineation Treatments for Rural Two-lane Highways: Final report written by and published by . This book was released on 1978 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under this research study, the effect of various delineation treatments on accident rates was assessed by analyzing accident data from more than 500 roadway sites in 10 States for tangent, winding and isolated horizontal curve sections on two-lane rural highways. Cost-benefit and cost models for evaluating specific delineation treatments were developed and guidelines formulated by executing the cost-benefit models for selected delineation treatments.
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Publisher : Aashto
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.3/5 (555 download)
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:
Author : Charles V. Zegeer
Publisher :
ISBN 13 :
Total Pages : 242 pages
Book Rating : 4.3/5 (91 download)
Download or read book Cost-effective Geometric Improvements for Safety Upgrading of Horizontal Curves written by Charles V. Zegeer and published by . This book was released on 1990 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
