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Highway Economic Requirements System Hers Safety Model Assessment And Two Lane Urban Crash Model
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Book Synopsis Highway Economic Requirements System (HERS) by : Lee Biernbaum
Download or read book Highway Economic Requirements System (HERS) written by Lee Biernbaum and published by . This book was released on 2008 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents a crash prediction model which takes into consideration the "combined effects of [a] roadway's geometric features and traffic levels," as opposed to the current Highway Economic Requirements System (HERS} model which only considers traffic levels (p. 29). The report begins with an overview of crash prediction, including crash causes (driver, vehicle, and roadway characteristics) and modeling strategies. It describes the current HERS model, reviews existing highway and crash data sources, and reviews research on the effects of roadway geometry. Finally, it presents an improved model for predicting crashes on urban two-lane streets.
Author :John A. Volpe National Transportation Syste Center Publisher :Createspace Independent Publishing Platform ISBN 13 :9781494894344 Total Pages :90 pages Book Rating :4.8/5 (943 download)
Book Synopsis Highway Economic Requirements System (HERS) Safety Model Assessment and Two-Lane Urban Crash Model by : John A. Volpe National Transportation Syste Center
Download or read book Highway Economic Requirements System (HERS) Safety Model Assessment and Two-Lane Urban Crash Model written by John A. Volpe National Transportation Syste Center and published by Createspace Independent Publishing Platform. This book was released on 2014-01-21 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are many reasons to be concerned with estimating the frequency and social costs of highway accidents, but most reasons are motivated by a desire to minimize these costs to the extent feasible. Competition for scarce resources is a practical necessity, and society seeks to apply those resources where they will do the most good. With highway crashes, given the high costs of mis-prediction in fatalities and injuries, sound information for prioritizing projects with limited funds is essential.
Book Synopsis Highway Economic Requirements System by : Herbert Weinblatt
Download or read book Highway Economic Requirements System written by Herbert Weinblatt and published by . This book was released on 1999 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Highway Economic Requirements System by : John A. Volpe National Transportation Systems Center (U.S.)
Download or read book Highway Economic Requirements System written by John A. Volpe National Transportation Systems Center (U.S.) and published by . This book was released on 2005 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Roundabouts by : Lee August Rodegerdts
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.
Book Synopsis Prediction of the Expected Safety Performance of Rural Two-lane Highways by : Douglas W. Harwood
Download or read book Prediction of the Expected Safety Performance of Rural Two-lane Highways written by Douglas W. Harwood and published by . This book was released on 2000 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents an algorithm for predicting the safety performance of a rural two-lane highway. The accident prediction algorithm consists of base models and accident modification factors for both roadway segments and at-grade intersections on rural two-lane highways. The base models provide an estimate of the safety performance of a roadway or intersection for a set of assumed nominal or base conditions. The accident modification factors adjust the base model predictions to account for the effects on safety for roadway segments of lane width, shoulder width, shoulder type, horizontal curves, grades, driveway density, two-way left-turn lanes, passing lanes, roadside design and the effects on safety for at-grade intersections of skew angle, traffic control, exclusive left- and right-turn lanes, sight distance, and driveways. The accident prediction algorithm is intended for application by highway agencies to estimate the safety performance of an existing or proposed roadway. The algorithm can be used to compare the anticipated safety performance of two or more geometric alternatives for a proposed highway improvement. The accident prediction algorithm includes a calibration procedure that can be used to adapt the predicted results to the safety conditions encountered by any particular highway agency on rural two-lane highways. The algorithm also includes an Empirical Bayes procedure that can be applied to utilize the safety predictions provided by the algorithm together with actual site-specific accident history data.
Book Synopsis Safety Effects of Cross-section Design for Two-lane Roads. Volume I - Final Report by : Charles V. Zegeer
Download or read book Safety Effects of Cross-section Design for Two-lane Roads. Volume I - Final Report written by Charles V. Zegeer and published by . This book was released on 1987 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was intended to quantify the benefits and costs resulting from lane widening, shoulder widening, shoulder surfacing, sideslope flattening, and roadside improvements. Detailed traffic, accident, and roadway data were collected on 4,951 miles of two lane roads in seven states. An accident predictive model and statistical tests were used to determine expected accident reductions related to various geometric improvements. Construction cost data from several states were used to develop a cost model for numerous types of roadway and roadside projects. This volume contains the final report and four appendixes. The final report contains detailed information on data collection and data analysis and conclusions and recommendations. The appendixes contain detailed information on the literature review, photographs used for the rural and urban roadside hazard scales, and economic analysis inputs.
Book Synopsis Procedure for Using Accident Modification Factors in the Highway Design Process by : James A. Bonneson
Download or read book Procedure for Using Accident Modification Factors in the Highway Design Process written by James A. Bonneson and published by . This book was released on 2007 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highway safety is an ongoing concern to the Texas Department of Transportation (TxDOT). As part of its proactive commitment to improving highway safety, TxDOT is moving toward including quantitative safety analyses earlier in the project development process. The objectives of this research project are: (1) the development of safety design guidelines and evaluation tools to be used by TxDOT designers, and (2) the production of a plan for the incorporation of these guidelines and tools in the planning and design stages of the project development process. This document describes a procedure for using accident modification factors in the highway design process. Application of the procedure entails the use of several factors, where each factor addresses one specific design element (such as lane width, shoulder width, curve radius, etc.). Collectively, the factors can be used to estimate the effect of a change in one or more design elements. The procedure can be used to evaluate the safety benefits associated with alternative geometric designs.
Book Synopsis Highway Economic Requirements System - State Version Technical Guide by :
Download or read book Highway Economic Requirements System - State Version Technical Guide written by and published by DIANE Publishing. This book was released on with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Highway Standards on Safety by : Hugh W. McGee
Download or read book Effect of Highway Standards on Safety written by Hugh W. McGee and published by Transportation Research Board. This book was released on 1995 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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)
Book Synopsis Roadside Design Guide by : American Association of State Highway and Transportation Officials. Task Force for Roadside Safety
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:
Book Synopsis Safety Data, Analysis, and Modeling by :
Download or read book Safety Data, Analysis, and Modeling written by and published by . This book was released on 2008 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's Transportation Research Record: Journal of the Transportation Research Board, No. 2083 includes 22 papers that explore data-driven perspective on safety risk management, macrolevel annual safety performance measures, tool with road-level crash prediction for safety planning, congestion and number of lanes on urban freeways relationship to safety, accident modification factors, identifying hazardous road locations, identifying hot spots, and safety influence area for four-legged signalized intersections. This issue of the TRR also examines automated analysis of accident exposure, new simulation-based surrogate safety measure, hit-and-run crashes, speed limit increases' effect on injury severity, safety of curbs, proximity to intersections and injury severity of urban arterial crashes, nested logit model of traffic flow on freeway ramps, intelligent transportation system data for assessing freeway safety, vehicle time spent in following on two-lane rural roads, indirect associations in crash data, crash prediction models for rural highways, and methodology for identifying causal factors of accident severity.
Book Synopsis Evaluation of the Applicability of the Interactive Highway Safety Design Model to Safety Audits of Two-lane Rural Highways by : Mitsuru Saito
Download or read book Evaluation of the Applicability of the Interactive Highway Safety Design Model to Safety Audits of Two-lane Rural Highways written by Mitsuru Saito and published by . This book was released on 2008 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Interactive Highway Safety Design Model (IHSDM) is a suite of software developed by the Federal Highway Administration (FHWA) for monitoring and analyzing two-lane rural highways in the United States. Among the six modules available in IHSDM, two were chosen for evaluation because of their applicability to audit safety of the two-lane rural highways in Utah, namely the Crash Prediction Module (CPM) and the Intersection Review Module (IRM). It was found that the CPM can produce reasonably reliable crash predictions if appropriate input data, especially alignment data, reflect the existing conditions at reasonable accuracy and engineering judgment is used. Based on the findings of the study, it is concluded that the CPM and IRM of IHSDM could be a useful tool for engineering decision-making during safety audits of two-lane rural highways. However, the outputs from these modules demand knowledge and experience in highway design.
Book Synopsis Evaluation of Interactive Highway Safety Design Model Crash Prediction Tools for Two-lane Rural Roads on Kansas Department of Transportation Projects by : Howard Lubliner
Download or read book Evaluation of Interactive Highway Safety Design Model Crash Prediction Tools for Two-lane Rural Roads on Kansas Department of Transportation Projects written by Howard Lubliner and published by . This book was released on 2014 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Revised Highway Economic Evaluation Model (HEEM-II) by : Jeffery Lynn Memmott
Download or read book Revised Highway Economic Evaluation Model (HEEM-II) written by Jeffery Lynn Memmott and published by . This book was released on 1983 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Accident Surrogates for Use in Analyzing Highway Safety Hazards. Volume I: Executive Summary. Final Report by : Tapan K. Datta
Download or read book Accident Surrogates for Use in Analyzing Highway Safety Hazards. Volume I: Executive Summary. Final Report written by Tapan K. Datta and published by . This book was released on 1983 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Safety Assessment Tool for Construction Zone Work Phasing Plans by : Henry Brown
Download or read book Safety Assessment Tool for Construction Zone Work Phasing Plans written by Henry Brown and published by . This book was released on 2016 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Highway Safety Manual (HSM) is the compilation of national safety research that provides quantitative methods for analyzing highway safety. The HSM presents crash modification functions related to freeway work zone characteristics such as work zone duration and length. These crash modification functions were based on freeway work zones with high traffic volumes in California. When the HSM-referenced model was calibrated for Missouri, the value was 3.78, which is not ideal since it is significantly larger than 1. Therefore, new models were developed in this study using Missouri data to capture geographical, driver behavior, and other factors in the Midwest. Also, new models for expressway and rural two-lane work zones that barely were studied in the literature were developed. A large sample of 20,837 freeway, 8,993 expressway, and 64,476 rural two-lane work zones in Missouri was analyzed to derive 15 work zone crash prediction models. The most appropriate samples of 1,546 freeway, 1,189 expressway, and 6,095 rural two-lane work zones longer than 0.1 mile and with a duration of greater than 10 days were used to make eight, four, and three models, respectively. A challenging question for practitioners is always how to use crash prediction models to make the best estimation of work zone crash count. To solve this problem, a user-friendly software tool was developed in a spreadsheet format to predict work zone crashes based on work zone characteristics. This software selects the best model, estimates the work zone crashes by severity, and converts them to monetary values using standard crash estimates. This study also included a survey of departments of transportation (DOTs), Federal Highway Administration (FHWA) representatives, and contractors to assess the current state of the practice regarding work zone safety. The survey results indicate that many agencies look at work zone safety informally using engineering judgment. Respondents indicated that they would like a tool that could help them to balance work zone safety across projects by looking at crashes and user costs.
