Download or read book Design and Evaluation of Modified Centerline Rumble Strips written by Yong-Rak Kim and published by . This book was released on 2017 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A centerline rumble strip (CLRS) is primarily installed on the centerline of undivided two-lane and two-way roadways to alert drivers that they are moving out of their intended travel lane. The main purpose of CLRSs is to reduce cross-over collisions, such as head-ons, opposite-direction sideswipe, and front-to-side crashes, typically caused by inattentive, distracted, drowsy, or fatigued drivers. Despite the safety benefits, CLRSs that were milled over or adjacent to the centerline joint may increase or accelerate the deterioration and degradation of the pavement structure, which has been observed in Nebraska pavements. In this research project, new (or modified) CLRS designs were sought to reduce pavement damage, while satisfying the safety purpose of CLRSs. ... Model simulation results demonstrated that pavements with CLRSs showed higher stress than pavements without CLRSs. In addition, each CLRS design induced different stress distributions (and damage potential) due to different tire-pavement contact. ... This research provides preliminary insights into how a modified CLRS design can reduce the pavement damage, while the findings should be validated through field testing in a follow-up effort" (leaf ii).

Download or read book Guidance for the Design and Application of Shoulder and Centerline Rumble Strips written by Darren J. Torbic and published by Transportation Research Board. This book was released on 2009 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides guidance for the design and application of shoulder and centerline rumble strips as an effective crash reduction measure, while minimizing adverse effects for motorcyclists, bicyclists, and nearby residents. Using the results of previous studies and the research conducted under this project, safety effectiveness estimates were developed for shoulder rumble strips on rural freeways and rural two-lane roads and for centerline rumble strips on rural and urban two-lane roads.

Download or read book NCHRP Report 641 written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NCHRP Report 641 written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Centerline Rumble Strips written by and published by . This book was released on 2005 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Accident Modification Factors for Traffic Engineering and ITS Improvements written by David L. Harkey and published by Transportation Research Board. This book was released on 2008 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB¿s National Cooperative Highway Research Program (NCHRP) Report 617: Accident Modification Factors for Traffic Engineering and ITS Improvements explores the development of accident modification factors (AMFs) for traffic engineering and intelligent transportation system improvements. AMFs, also known as crash reduction factors, are designed to provide a simple and quick way of estimating the safety impacts of various types of engineering improvements, encompassing the areas of signing, alignment, channelization, and other traffic engineering solutions.

Download or read book Evaluation of the Effectiveness of Centerline Rumble Stripes on Rural Roads written by Wendy M. Ellis and published by . This book was released on 2015 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidance for the Design and Application of Shoulder and Centerline Rumble Strips written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recent Roadway Geometric Design Research for Improved Safety and Operations written by Marcus Brewer and published by Transportation Research Board. This book was released on 2012 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: RB’s National Cooperative Highway Research Program (NCHRP) Synthesis 432: Recent Roadway Geometric Design Research for Improved Safety and Operations reviews and summarizes roadway geometric design literature completed and published from 2001 through early 2011, particularly research that identified impacts on safety and operations.

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:

Download or read book Roundabouts written by Lee August Rodegerdts and published by Transportation Research Board. This book was released on 2010 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Report 672: Roundabouts: An Informational Guide - Second Edition explores the planning, design, construction, maintenance, and operation of roundabouts. The report also addresses issues that may be useful in helping to explain the trade-offs associated with roundabouts. This report updates the U.S. Federal Highway Administration's Roundabouts: An Informational Guide, based on experience gained in the United States since that guide was published in 2000.

Download or read book Practice of Rumble Strips and Rumble Stripes written by Omar Smadi and published by . This book was released on 2016 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis documents current practices used by states installing rumble strips and explores variations in practice in terms of design, criteria, and locations for installation, maintenance, perceived benefits, communication of benefits, and important issues. Information was acquired through a literature review, survey on current practice, and case examples. The survey also included questions specific to the state of practice for rumble stripes, which is the term used when the pavement marking lines are painted on the rumble strip in an effort to increase visibility during inclement weather conditions. The findings indicate that two-thirds of the state agencies rely on traditional methods to address the noise issue: skipping rumbles in residential areas, adjusting their depth, or not installing rumbles at all. The overwhelming majority of responding states, 83%, have developed policies or guidance to modify their rumble design practices to be sensitive to cyclists. Fewer than half the respondents have developed policies/guidance to address pavement deterioration; several agencies indicated that pavement condition is a factor on whether to install a rumble or not. The survey also showed that very few state DOTs have created public campaigns to explain that the use of rumbles improves safety so that complaints regarding noise, bicycle issues, and other are minimized.

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:

Download or read book Highway Safety written by United States. General Accounting Office and published by . This book was released on 2004 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of a Proposal to Set a Goal for the Virginia Strategic Highway Safety Plan of a Forty Percent Reduction in Traffic Fatalities and Injuries by 2010 written by Young-Jun Kweon and published by . This book was released on 2006 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to determine whether a 40% reduction in traffic fatalities and injuries by 2010 is a reasonable goal to include in Virginia's state-level strategic highway safety plan or whether such a goal is overly optimistic. To achieve the study objective, the scope of the study was limited to making the following determinations: 1. Forecast the total number of traffic fatalities and injuries in Virginia in 2010 assuming three scenarios: In Scenario 1, no state-level traffic safety plan or major traffic engineering safety improvements are implemented between now and 2010. In Scenario 2, only four traffic engineering improvements are made between now and 2010. In Scenario 3, a primary seat belt law along with the four engineering improvements from Scenario 2 are implemented. 2. Determine the probability that Virginia can achieve a 40% reduction in fatalities and injuries by 2010 under Scenarios 2 and 3. 3. Determine realistic goals for the reduction of traffic fatalities and injuries in Virginia in 2010. Based on the forecasts under the three scenarios, the 40% reduction goals are overly optimistic. Assuming a normal distribution of the forecasts, the probabilities of achieving 40% reduction goals for fatalities and injuries are very low or low. Under Scenario 2, if the four engineering treatments are implemented at the 50% level, the probabilities that Virginia would achieve 40% reductions in 2010 are 1.2% for fatalities and 0.012% for injuries. Under Scenario 3, assuming that the primary enforcement seat belt law was enacted and the four engineering treatments were implemented at the 50% level, the probabilities are 8.6% for fatalities and 0.05% for injuries. Accounting for a slight increase in fatalities and injuries in 2010 compared to 2004, realistic goals for Virginia are a 10% (maximum of 20%) reduction goal for fatalities and a 5% (maximum of 10%) reduction goal for injuries. These recommended goals assume that Virginia enacts a primary enforcement seat belt law and exercises enforcement efforts accordingly and deploys engineering crash countermeasures comparable to the 20% to 30% level of implementation of the four treatments used in this study, namely, (1) adding an exclusive left-turn lane to intersections, (2) modifying the signal change intervals, (3) installing centerline rumble strips, and (4) installing/upgrading guardrail.

Download or read book Highway Safety Federal and State Efforts to Address Rural Road Safety Challenges Report to Congressional Committees written by United States. General Accounting Office and published by . This book was released on 2004 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book AASHTO Guide for Design of Pavement Structures 1993 written by American Association of State Highway and Transportation Officials and published by AASHTO. This book was released on 1993 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design related project level pavement management - Economic evaluation of alternative pavement design strategies - Reliability / - Pavement design procedures for new construction or reconstruction : Design requirements - Highway pavement structural design - Low-volume road design / - Pavement design procedures for rehabilitation of existing pavements : Rehabilitation concepts - Guides for field data collection - Rehabilitation methods other than overlay - Rehabilitation methods with overlays / - Mechanistic-empirical design procedures.