Developing Guidelines for Median Barrier Installation

2005 ◽  
Vol 1904 (1) ◽  
pp. 2-19 ◽  
Author(s):  
Shaw-Pin Miaou ◽  
Roger P. Bligh ◽  
Dominique Lord
Keyword(s):  
Cost Analysis ◽  
High Speed ◽  
Estimation Method ◽  
Bayes Estimation ◽  
Sensitivity Analyses ◽  
Cross Sectional ◽  
Data Set ◽  
Benefit Cost Analysis ◽  
Transportation Research ◽  
Benefit Cost

Guidelines for the installation of median barriers presented in the AASHTO Roadside Design Guide have remained essentially unchanged for more than 30 years. In recent years, the need for improved guidance has prompted several states to reevaluate their guidelines and has also precipitated a nationwide research project administered by the Transportation Research Board. The objective of the study, on which this paper is based, was to develop improved guidelines for the use of median barriers on new and existing high-speed, multilane, divided highways in Texas. The purpose here is to present some modeling and benefit–cost analysis results from that study, with a focus on the results from a particular data set developed under a cross-sectional with–without study design. The highways of interest are those classified as Interstates, freeways, and expressways with four or more lanes and posted speed limits of 55 mph (88 km/h) or higher. The models employed to estimate median-related crash frequencies and severities, including the Poisson-gamma and ordered multinomial logit models as well as modeling results from a full Bayes estimation method, are presented. From the modeling results, a preliminary benefit–cost analysis is described, in conjunction with some sensitivity analyses, for developing the guidelines for concrete and high-tension-cable barriers. A discussion of the limitations of this study and potential future extensions is provided.

Application of Benefit-Cost Analysis to the Proposed California High-Speed Rail System

2001 ◽  
Vol 1742 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Daniel Brand ◽  
Mark R. Kiefer ◽  
Thomas E. Parody ◽  
Shomik R. Mehndiratta
Keyword(s):  
Cost Analysis ◽  
High Speed ◽  
High Speed Rail ◽  
Benefit Cost Analysis ◽  
Rail System ◽  
Benefit Cost

scholarly journals Development of Benefit Cost Analysis Tools for Evaluating Transportation Research Projects

2019 ◽  
Vol 2673 (1) ◽  
pp. 123-135 ◽  
Author(s):  
Nikolai Greer ◽  
Khaled Ksaibati
Keyword(s):  
Cost Analysis ◽  
Case Studies ◽  
Cost Ratio ◽  
Research Projects ◽  
Benefit Cost Analysis ◽  
Benefit Cost Ratio ◽  
Transportation Research ◽  
Benefit Cost ◽  
Transportation Agencies

Transportation research projects are a vital element for transportation agencies to accumulate new technology and knowledge to improve the efficiency and safety of transportation infrastructure. The purpose of this paper is to develop benefit cost analysis (BCA) tools to assist transportation agencies in evaluating transportation research projects. The BCA tools provide analysis methods for estimating the benefits for changes in the level of service (LOS) of a roadway, reductions in the vehicle travel time, changes in vehicle operating costs and reductions in the number of crashes. Three case studies were investigated to illustrate the usage of the BCA tools. The first case study evaluated the effectiveness of variable speed limit systems implemented along I-80 in southern Wyoming. The BCA tools estimated a benefit cost ratio of 6.64 indicating that the implementation of the project was economically justifiable. The second case study was a recent study investigating and developing mitigation strategies for the effects of truck traffic along the I-80 in southern Wyoming resulting in a benefit cost ratio of a 9.23 indicating that the project had the potential to be economically viable upon implementation. The final case study evaluated the effect of wildlife overpass and underpass crossings on the migrations of pronghorn and mule deer. The benefit cost ratio for the research project was 0.42 indicating that the project was not economically beneficial after the first year of implementation. The case studies indicated that the BCA tools are a beneficial tool for quantifying the economic benefits of a transportation research project.

scholarly journals Willingness-to-Pay and Benefit–Cost Analysis of IPL for Rosacea Treatment: A Cross-Sectional Study in China

2020 ◽  
Vol Volume 14 ◽  
pp. 1843-1852
Author(s):  
Qing Deng ◽  
Shu-ping Zhang ◽  
Yu-Xuan Deng ◽  
Fang-fen Liu ◽  
Wei Shi ◽  
...  
Keyword(s):  
Cost Analysis ◽  
Willingness To Pay ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Benefit Cost Analysis ◽  
Benefit Cost

scholarly journals Social Profitability Threshold of High Speed Railway:A Benefit-Cost Analysis

2011 ◽  
Vol 01 (04) ◽  
pp. 107-115
Author(s):  
Pablo Coto-Millán ◽  
Vicente Inglada ◽  
Pedro Casares
Keyword(s):  
Cost Analysis ◽  
High Speed ◽  
Benefit Cost Analysis ◽  
Benefit Cost

High-Speed Rail in Portugal

2017 ◽  
pp. 1-37
Author(s):  
David Besanko ◽  
João Tenreiro Gonçalves
Keyword(s):  
Cost Analysis ◽  
High Speed ◽  
Polio Eradication ◽  
Global Public Good ◽  
List Type ◽  
High Speed Rail ◽  
Benefit Cost Analysis ◽  
Benefit Cost ◽  
Development And Management

Rede Alta Velocidade, SA (RAVE), the state-owned company responsible for planning and developing a major high-speed rail project in Portugal, must persuade both public officials and lenders that the project is worth undertaking. It must also make a recommendation on the appropriate organizational form for the enterprise. Specifically, it must determine the role of the Portuguese government in financing and operating the high-speed rail network, with options ranging from full development and management of the project by the public sector to completely private development and management. Lying in between these two polar cases were a variety of hybrid models, often referred to as public-private partnerships (PPPs). Using data in the case, students have the opportunity to perform a benefit-cost analysis of the project. They also must think carefully about the optimal role of the government in a major new infrastructure project.After analyzing and discussing the case, students will be able to: Understand the nature of a global public good Perform a back-of-the-envelope benefit-cost analysis of polio eradication Discuss the appropriate strategy for eradicating an infectious disease Apply game theory to analyzing which countries would be likely to contribute funds toward global polio eradication Discuss the role of private organizations in the provision of global public goods

Sign in / Sign up

Export Citation Format

Share Document