Download or read book An Evaluation of the Effectiveness of Rumble Strips written by Virginia. Department of Highways and Transportation and published by . This book was released on 1981 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of the Effectiveness of Pavement Rumble Strips written by Adam J. Kirk and published by . This book was released on 2008 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Policy Considerations and Evaluation of the Safety Effectiveness of Rumble Strips in Wyoming written by Mirza Ahammad Sharif and published by . This book was released on 2015 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rumble strips/stripes are used by many states as a relatively low cost proven safety countermeasure to reduce or prevent lane departure crashes by providing a vibrotactile and audible warning to inattentive motorists. Although the advantages of rumble strips are generally found to outweigh the disadvantages, several issues and concerns have been identified regarding the implementation of rumble strips. The main goal of this study is to develop an effective policy of shoulder and centerline rumble strips/stripes in the State of Wyoming to enhance motor vehicle safety while accommodating all road users to the highest practical extent. Surveys were conducted to assess road users' concerns about rumble strips. Moreover, several issues regarding the use of rumble strips/stripes including: construction, maintenance, and noise are discussed. With the help of WYDOT, information regarding the state of practice of rumble strips/stripes in the U.S. was collected. Information was obtained through a review of the literature, online survey, and email communication with States DOTs. Thirty states responded to the online survey. Only four agencies have fully adhered to the NCHRP guidelines; Idaho, Mississippi, Nevada, and New Mexico. Fifteen agencies indicated that they are using the guidelines provided by NCHRP with some modifications to suit the needs of their region. Seven agencies are using their own guidelines; Alabama, Kentucky, Massachusetts, New Hampshire, North Dakota, Texas, and Wyoming. Among the agencies which took the survey, only Oklahoma responded that they do not have a written policy for rumble strips. Based on the DOTs guidelines identified recently from the literature and survey responses, thirty state agencies have already made provisions to accommodate bicyclists. Only three agencies responded that they do not have any provisions for bicyclists while the remaining eighteen state agencies indicated that they do not have adequate information to address this issue. The rest of the survey results showed that many DOTs are still updating their rumble strip policies. DOTs which had already been using their own guidelines are now moving forward to accommodate the non-conventional vehicles and nearby residents. About 72 percent of the states are following the NCHRP Report 641 guideline, either strictly or with some modifications. Application criteria and maintenance practices vary by state. Shoulder rumble strips are more widely used than centerline rumble strips or shoulder rumble stripes. Rumble strips are installed mostly on rural roadways since they possess fewer constraints on installation criteria. All of the 30 states which responded to the survey are using SRS and among them 27 states are using CLRS. The use of the combination of SRS and CLRS is not adopted by all the states, only 55 percent of the states are using both types in combination. Although the NCHRP 641 issued guidance on how state agencies can balance the increase in rumble strips implementation while accommodating all roadway users, 16 percent of state DOTs have indicated that their policies do not have any provisions for bicyclists when installing rumble strips, whereas, 42 percent of the DOTs do not consider noise when installing rumble strips. Most of the DOTs commented that they try to avoid installing rumble strips in urban areas to prevent noise. From the survey responses, information gathered in earlier surveys, and from synthesis documents; it was found that 36 states made provisions to accommodate bicyclists; while only 3 states; Idaho, Maine, and Florida attempted to accommodate motorcyclists. Maine DOT provides skip pattern on centerline rumble strips in rumble strips to facilitate motorcycle lane changes. Idaho DOT uses centerline rumble strips only in no-passing zones. The governing criteria ranked by DOTs when a roadway is considered for installing rumble strips are in the following order; area type (urban vs. rural), guardrail, pavement type, pavement thickness, bicycle traffic, motorcyclists, noise, nearby residents. An Expert System has been developed to provide an interactive easy way to navigate through rumble strips/stripes practices and guidelines in the U.S. It is recommended that the information compiled in the 'Expert System' should be fully utilized when adopting a new policy. It is also recommended that other DOTs implement or upgrade their rumble strips policies may utilize recent information presented in this study. Nine rural two-lane segments of 121.6 miles were identified for safety effectiveness analysis and to calibrate Crash Modification Factors (CMF) for rumble strips in Wyoming. Three years of crash and traffic data in the before and after were used to conduct a Naïve before-after analysis. The results showed significant effect of shoulder rumble strips on reducing target crashes and total crashes. Total crashes reduced by 40%. Additionally, Fatal and Injury (F+I) crashes, and Single Vehicle Run-Off-Road (SVROR) crashes reduced by 44% and 39%, respectively.

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 Safety Evaluation of Centerline Rumble Strips written by David A. Noyce and published by . This book was released on 2003 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of the Effectiveness of Rumble Strip Construction in the Travel Lane written by Carrie A. Sutton and published by . This book was released on 1995 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Non freeway Rumble Strips Phase II written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: MDOT's rumble strip program for two-lane high speed rural highways was initiated in 2008 and continued through 2010. This program included implementation of centerline rumble strips (CLRS) on nearly 5,400 miles of two-lane high speed roads that MDOT maintains. This program presented an opportunity to perform a comprehensive evaluation of safety performance of rumble strips, especially CLRS. A two-phase evaluation study of the program was launched to estimate the driver behavioral and performance improvement in the presence of CLRS on two-lane high speed highways and also perform a system-wide "Before" and "After" study of target traffic crashes. The driver behavior-related study and collection of the three years' "Before" crash data and analysis was performed in Phase I (OR09084A) and the Phase II study was performed to collect the three years of "After" crash data, a program evaluation study, and benefit-cost analysis. The crash analysis indicated statistically significant reductions in all target crashes including, head-on, sideswipe opposite and run-off-the-road left. The study of crashes and their severity resulted in the reduction in fatal and all categories of injury crashes including a 47% reduction in total target crashes and a 51% reduction in target fatal crashes. An economic analysis of the rumble strip program resulted in a benefit-cost ratio of the program to be in the range of 58:1 to 18:1 based on discount rate assumptions of 2% and 10%, respectively. A road user survey indicated strong agreement among the respondents that CLRS is a beneficial safety improvement program.

Download or read book Evaluation of Innovative Safety Treatments written by Vivek Reddy and published by . This book was released on 2008 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Evaluation of Shoulder Rumble Strips in Montana written by Robert R. Marvin and published by . This book was released on 2003 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: An evaluation of shoulder rumble strip's effectiveness in reducing off-road and rollover crashes on Montana's highway system utilized 10 years of crash data on 393 miles of Interstate Highways and 213 miles of National Highway System (NHS) and Primary Highways. Statistical analysis of crash data involved rumble strip segments and control segments without rumble strips for 3 year periods before and after implementation of shoulder rumble strips. Descriptive statistics were developed from global data sets and comparative statistics on equivalent segments produced a finding of significant crash reductions on Interstate Highways, while the effect of shoulder rumble strips on NHS and Primary Highways was uncertain due to an inadequate sample size. Analysis of contingency tables indicate that the reduction in Interstate off-road crash rates attributable to shoulder rumble strips was 14.0% with a corresponding reduction of 23.5% in severity rates. The benefit/cost ratio for construction of shoulder rumble strips on Interstate highways was 19.5. A shoulder rumble strip driver survey involving questions related to knowledge of rumble strips, frequency of encounters, reaction to exposure, and general opinions on their use was incorporated as part of the study. The survey indicated that 95% of the driving public was familiar with rumble strips and their use with the majority of drivers encountering rumble strips on every highway trip. The overwhelming majority of motorists liked the benefits that shoulder rumble strips provide.

Download or read book Effectiveness of Rumble Strips a Systematic Review by Meta analysis written by Mazedur Rahman and published by . This book was released on 2005 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Rumble Strips at Rural Stop controlled Intersections in Texas written by Tyrell D. Thompson and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Major safety concerns are present at rural high speed intersections. When long uninterrupted tangents are located near rural intersections, the drivers can become inattentive to upcoming decision points. Traffic control devices could aid in mitigating these occurrences by warning drivers of upcoming decision points. One such device is transverse rumble strips, which act to provide motorists with an audible and tactile warning that their vehicle is approaching a decision point of critical importance to safety. The objective of this research was to determine if the presence of transverse rumble strips were an effective warning device for drivers approaching rural stop-controlled intersections. To evaluate the effectiveness of transverse rumble strips, vehicle speeds were measured at three locations along the approach to an intersection both before and after the installation of rumble strips. Vehicle speeds were measured at nine rural stop-controlled intersection sites in Texas. Overall, the installation of rumble strips generally produced small, but statistically significant (p [less than or equal to] 0.05), reductions in traffic speeds. There were some negative driver behavioral impacts (i.e., speed increases) that occurred after the installation of rumble strips. There were a few instances where speed change reductions of greater than 1 mph occurred, however, the overall trend was that speed change reductions were equal to or less than 1 mph. Although the rumble strips did not produce meaningful reductions in traffic speeds, they should still be considered based upon previous accident reductions and minimal installation costs.

Download or read book Evaluation of Rumble Stripes on Low volume Roads in Iowa written by Shauna L. Hallmark and published by . This book was released on 2011 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Single-vehicle run-off-road crashes are the most common crash type on rural two-lane Iowa roads. Rumble strips have proven effective in mitigating these crashes, but the strips are commonly installed in paved shoulders on higher-volume roads that are owned by the State of Iowa. Lower-volume paved rural roads owned by local agencies do not commonly feature paved shoulders but frequently experience run-off-road crashes. This project involved installing rumble stripes, which are a combination of conventional rumble strips with a painted edge line placed on the surface of the milled area, along the edge of the travel lanes, but at a narrow width to avoid possible intrusion into the normal vehicle travel paths. The research described in this report was part of a project funded by the Federal Highway Administration, Iowa Highway Research Board, and Iowa Department of Transportation to evaluate the effectiveness of edge-line rumble strips in Iowa. The project evaluated the effectiveness of rumble stripes in reducing run-off -road crashes and in improving the longevity and wet-weather visibility of edge-line markings. This project consisted of two phases. The first phase was to select pilot study locations, select a set of test sites, install rumble stripes, summarize lessons learned during installation, and provide a preliminary assessment of the rumble stripes' performance. The purpose of this report was to document results from Phase II. A before and after crash analysis was conducted to assess whether use of the treatment had resulted in fewer crashes. However, due to low sample size, results of the analysis were inconclusive. Lateral position was also evaluated before and after installation of the treatment to determine whether vehicles engaged in better lane keeping. Pavement marking wear was also assessed.

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 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 Handbook of Sustainable Travel written by Tommy Gärling and published by Springer Science & Business Media. This book was released on 2013-10-13 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume gathers distinguished researchers on travel behavior from a variety of disciplines, to offer state-of-the-art research and analysis encompassing environmental, traffic and transport psychology; transport planning and engineering; transport geography; transport economics; consumer services research; environmental sociology and well-being research. The underlying dilemma is that neither contemporary transportation technology nor contemporary travel behaviors are sustainable. The path toward sustainability is complex, because the consequences of changing technology and attempts to change travel preferences can be extreme both in economic and in social terms. The Handbook of Sustainable Travel discusses transportation systems from environmental, social and economic perspectives, to provide insights into the underlying mechanisms, and to envisage potential strategies towards more sustainable travel. Part I offers an introduction to the subject, with chapters review historical and future trends in travel, the role of travel for a good society, and the satisfaction of travelers with various features of travel options. Part II proceeds from the fact that the car is the backbone of today’s transportation system, and that a break with automobiles is likely to be necessary in the future. Contributors review the development of private car use, explore economic and psychological reasons why the car has become the primary mode of transport and discuss how this can be changed in the future. Part III addresses the social sustainability of travel, providing insights into the social costs and benefits of leisure, business and health travel, and taking into account the social costs or benefits of measures whose goals are primarily environmental. The authors provide the necessary background to judge whether proposed transport policies are also sustainable from a social perspective. Part IV highlights future alternatives to physical travel and surveys ecologically sustainable travel modes such as public transport and non-motorized modes of transportation.

Download or read book A Study of Effectiveness of Various Shoulder Rumble Strips on Highway Safety written by Chung S. Chen and published by . This book was released on 1994 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Run-off-the-Road (ROTR) type of accident has been a predominant factor in highway fatalities nationwide. This situation has created a major concern and challenge for traffic management within transportation departments. Shoulder rumble strips are new traffic control devices for interstate and limited access roadway systems, which hold great potential for reducing ROTR accidents. Consequently, they have become a critical and attractive subject for highway safety improvements. Although shoulder rumble strips have been recognized as an effective measure and have been widely tested by 35 state agencies and several countries, the rolled type rumble strip is found most often in the literature. The optimal design patterns among the available types and their effectiveness have not been quantitatively tested and confirmed. This paper reexamines different typical patterns using field tests, implementation surveys from agencies, and mathematical analysis. A model has been developed to determine the optimal patterns. The results reveal that a milled pattern is superior to a rolled pattern for asphalt shoulders in terms of audibility and tactility effectiveness, quality control and ease of construction. The corrugated pattern is practical for concrete shoulders. Evidence is presented that existing implementation of policy and design criteria for rolled rumble strips should be modified and that more research is needed to determine the degree of effectiveness.

Download or read book Centerline Rumble Strips written by Eugene Russell and published by Transportation Research Board. This book was released on 2005 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 339: Centerline Rumble Strips (CLRS) examines current design, installation, configuration, dimension, and visibility issues associated with CLRS. The report addresses the need for guidance on warrants, benefits, successful practices, and concerns such as external noise and the reduced visibility of centerline striping material. Also addressed are pavement deterioration, ice buildup in the grooves, adverse impact on emergency vehicles, and the effect of CLRS on bicyclists. Particular attention was paid to available before-and-after CLRS installation crash data to document the safety aspects of CLRS and the availability of policies, guidelines, warrants, and costs regarding their use and design.