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Author : Alexei R. Tsyganov
Publisher :
ISBN 13 :
Total Pages : 130 pages
Book Rating : 4.:/5 (1 download)
Download or read book Safety Impact of Edge Lines on Rural Two-lane Highways written by Alexei R. Tsyganov and published by . This book was released on 2005 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Vijaya R. Kakaraparthy
Publisher :
ISBN 13 :
Total Pages : 74 pages
Book Rating : 4.:/5 (557 download)
Download or read book Safety Impact of Edge Lines on Narrow Rural Two-lane Highways written by Vijaya R. Kakaraparthy and published by . This book was released on 2009 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Xiaoduan Sun
Publisher :
ISBN 13 :
Total Pages : 122 pages
Book Rating : 4.:/5 (1 download)
Download or read book Impact of Edge Lines on Safety of Rural Two-lane Highways written by Xiaoduan Sun and published by . This book was released on 2005 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study compiled an inventory of rural two-lane highways under the operation of the Texas Department of Transportation (TxDOT), investigated typical dimensions and characteristics of such roadways, and utilized this information to perform a detailed accident statistic analysis. Crash statistics comparisons were made for highways with and without edge lines. In addition to general accident frequency analysis, varying traffic lane and shoulder widths, and roadway curvature, factors such as accident type, intersection presence, light condition, surface condition, crash-supporting factors, severity, driver age, and driver gender were considered.
Author : Nicholas Michael Warrenchuk
Publisher :
ISBN 13 :
Total Pages : 222 pages
Book Rating : 4.:/5 (95 download)
Download or read book Safety Impacts of Edge Lines on Texas Rural Two-lane Roadways written by Nicholas Michael Warrenchuk and published by . This book was released on 2006 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Roadway crashes are a detriment to our society, so improvements in roadway safety that reduce crashes are of extreme importance. Though it is clear that crashes on our highways are a drain both socially and economically, the contribution of roadway safety to overall community safety is difficult to quantify and has seen many approaches. The study first defines highway safety as a whole, and then focuses on safety improvements on rural two-lane roadways. One such improvement, highway edge lines, may be especially beneficial on such highways. A literature review indicated that edge lines may have a tendency to reduce accident experience on rural, two-lane roads and may affect vehicle speed and lateral position in the lane, which in turn may increase or decrease accident likelihood. After compilation of a database of rural, two-lane roadways in Texas, an accident analysis comparing such roadways with and without edge lines was performed. In addition to general accident frequency analysis taking into account varying traffic lane and shoulder widths and roadway curvature, factors such as accident type, intersection presence, light condition, surface condition, crash-supporting factors, severity, driver age, and driver gender were considered. Further, stationary roadside observations measuring vehicle speed and lateral position were taken during daylight and darkness on three rural, two-lane roadway test sites first without edge lines, and then again after the sites were striped with edge lines. Overall, the accident analysis showed that edge line treatments on rural two-lane roadways may reduce accident frequency, especially run-off-the road frequency, with the highest impact on curves and narrow roadways. The stationary observation analysis indicated some tendency of edge lines to increase vehicle speeds and also decrease speed variations, while moving vehicles toward the pavement edge on narrow roadways, especially at night.
Author : Xiaoduan Sun
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (793 download)
Download or read book Safety Improvement from Edge Lines on Rural Two-lane Highways (with Three-years Before and One-year After Crash Data Analysis) written by Xiaoduan Sun and published by . This book was released on 2012 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Subasish Das
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.:/5 (798 download)
Download or read book Evaluating Safety Improvement from Edge Lines on Rural Two-lane Highways written by Subasish Das and published by . This book was released on 2012 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shauna L. Hallmark
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.:/5 (1 download)
Download or read book Safety Impacts of Pavement Edge Drop-offs written by Shauna L. Hallmark and published by . This book was released on 2006 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: A vehicle may leave its travel lane for a number of reasons, such as driver error, poor surface conditions, or avoidance of a collision with another vehicle in the travel lane. When a vehicle leaves the travel lane, pavement edge drop-off poses a potential safety hazard because significant vertical differences between surfaces can affect vehicle stability and reduce a driver's ability to handle the vehicle. Numerous controlled studies have tested driver response to encountering drop-offs under various conditions, including different speeds, vehicle types, drop-off height and shape, and tire scrubbing versus non-scrubbing conditions. The studies evaluated the driver's ability to return to and recover within their own travel lane after leaving the roadway and encountering a drop-off. Many of these studies, however, have used professional drivers as test subjects, so results may not always apply to the population of average drivers. Furthermore, test subjects are always briefed on what generally is to be expected and how to respond; thus, the sense of surprise that a truly naive driver may experience upon realizing that one or two of his or her tires have just dropped off the edge of the pavement, is very likely diminished. Additionally, the studies were carried out under controlled conditions. The actual impact of pavement edge drop-off on drivers' ability to recover safely once they leave the roadway, however, is not well understood under actual driving conditions. Additionally, little information is available that quantifies the number or severity of crashes that occur where pavement edge drop-off may have been a contributing factor. Without sufficient information about the frequency of edge drop-off-related crashes, agencies are not fully able to measure the economic benefits of investment decisions, evaluate the effectiveness of different treatments to mitigate edge drop-off, or focus maintenance resources. To address these issues, this report details research to quantify the contribution of pavement edge drop-off to crash frequency and severity. Additionally, the study evaluated federal and state guidance in sampling and addressing pavement edge drop-off and quantified the extent of pavement edge drop-off in two states. This study focused on rural two-lane paved roadways with unpaved shoulders, since they are often high speed facilities (55+ mph), have varying levels of maintenance, and are likely to be characterized by adverse roadway conditions such as narrow lanes or no shoulders.
Author : Mohamed Mohamed
Publisher :
ISBN 13 : 9781085583183
Total Pages : 92 pages
Book Rating : 4.5/5 (831 download)
Download or read book Safety Impact of Wider Pavement Edge Line Markings written by Mohamed Mohamed and published by . This book was released on 2018 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary task of pavement markings is to provide a visual cue to drivers to assist them with vehicle position along a roadway and help them make a proper lane change decision. The objective of this study was to determine the safety effectiveness of wider pavement markings with regard to traffic safety. The study collected and analyzed crash data at 38 locations in the state of Idaho. In the United States, the default pavement marking width is typically 4 inches and the color is white or yellow. Before and after studies using comparison group and Empirical Bayes methods were applied to determine that if there was a relationship between the implementation of wider pavement markings and vehicle crashes. Safety performance functions (SPF) for run-of-the-road crashes (ROR) in Idaho for two-lane rural highways were also developed. This study concluded that there is a strong relationship between wider pavement markings width and a reduced number of ROR crashes especially fatal and serious injuries crashes. For this reason, the implementation of wider pavement marking widths by agencies along two-lane rural highways is encouraged to provide a long-term safety benefit for the motoring public. This study will recommend strategies for state DOTs to increase safety and suggest a need to revise the MUTCD definitions on marking widths. The research results showed that wide pavement marking implementation has the potential to reduce fatal and serious ROR crashes by 10.07 percent with an expected cost to benefit ratio of approximately 1:25.
Author : Kay Fitzpatrick
Publisher : Transportation Research Board
ISBN 13 : 9780309066242
Total Pages : 176 pages
Book Rating : 4.0/5 (662 download)
Download or read book Accident Mitigation Guide for Congested Rural Two-lane Highways written by Kay Fitzpatrick and published by Transportation Research Board. This book was released on 2000 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Benjamin H. Cottrell
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.3/5 (555 download)
Download or read book Evaluation of Wide Edgelines on Two-lane Rural Roads written by Benjamin H. Cottrell and published by . This book was released on 1987 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of 8-in. wide edgelines on the incidence of run-off-the road (ROR) and related accidents was evaluated. The treatment locations consisted of three two-lane rural road sections totaling 55.2 miles. A before-and-after design with a comparison group, and a check for comparability were used to analyze data. Five years of accident data, covering the three years before wide edgeline installation and the two years after installation, were used. It was concluded that there is no evidence to indicate that wide edgelines significantly affected the incidence of ROR and related accidents for any individual treatment location or for the locations combined. The related accidents include ROR accidents involving driving under the influence of alcohol or drugs, ROR accidents on curves, ROR accidents during darkness, and opposite-direction accidents. Consequently, it was recommended that wide edgelines not be considered as a countermeasure for ROR accidents in Virginia.
Author : Xiaoduan Sun
Publisher :
ISBN 13 :
Total Pages : 53 pages
Book Rating : 4.:/5 (882 download)
Download or read book A Comprehensive Study on Pavement Edge Line Implementation written by Xiaoduan Sun and published by . This book was released on 2014 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: The previous 2011 study "Safety Improvement from Edge Lines on Rural Two-Lane Highways" analyzed the crash data of three years before and one year after edge line implementation by using the latest safety analysis statistical method. As an extension of the 2011 project, this study not only used two more years of crash data for the after time period but also applied the Empirical Bayes (EB) method in the analysis to estimate the crash reduction factors. Moreover, crash characteristics analysis is performed in this study to compare the difference before and after edge line implementation. Additionally, this project performed benefit and cost analysis.
Author : Scott Himes
Publisher :
ISBN 13 :
Total Pages : 54 pages
Book Rating : 4.:/5 (14 download)
Download or read book Safety Evaluation of Edge-line Rumble Stripes on Rural Two-lane Horizontal Curves written by Scott Himes and published by . This book was released on 2017 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technical summary of the Federal Highway Administration report about edge line rumble stripes to alert drowsy or distracted drivers when leaving the travel lane.
Author : John L. Campbell
Publisher : Transportation Research Board
ISBN 13 : 0309154693
Total Pages : 111 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 2010 with total page 111 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.
Author :
Publisher :
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.
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)
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 :
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.3/5 (555 download)
Download or read book Safety Evaluation of the Safety Edge Treatment written by and published by . This book was released on 2011 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Between periods of maintenance, pavement-edge drop-offs can form along the edge of highways. When a driver runs off the roadway, such drop-offs can hinder reentry and may lead to driver overcorrection, loss of control, or overturning on the roadway or roadside. The safety edge is a treatment that is implemented in conjunction with pavement resurfacing and is intended to help minimize drop-off-related crashes. This report examines the safety effects, costs, and benefits of this low-cost treatment for two-lane and multilane rural highways. The safety research was conducted as an observational before-after evaluation of treated sites using the empirical Bayes method. The economic appraisal consisted of a benefit-cost analysis"--Technical report documentation page.
Author : Eric T. Donnell
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (1 download)
Download or read book Operational Effects of Wide Edge Lines Applied to Horizontal Curves on Two-lane Rural Highways written by Eric T. Donnell and published by . This book was released on 2006 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
