Safety Effectiveness Of Advance Warning Signs On Mountain Pass Downgrades

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Safety Effectiveness of Advance Warning Signs on Mountain Pass Downgrades

Author : Mustaffa Raja
Publisher :
ISBN 13 : 9780438468474
Total Pages : 169 pages
Book Rating : 4.4/5 (684 download)

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Book Synopsis Safety Effectiveness of Advance Warning Signs on Mountain Pass Downgrades by : Mustaffa Raja

Download or read book Safety Effectiveness of Advance Warning Signs on Mountain Pass Downgrades written by Mustaffa Raja and published by . This book was released on 2018 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mountain passes increase the risk of a runaway, or out of control trucks. Advance warning signs inform the driver to take special precautions such as reducing speed or using lower gears during the descent. The Wyoming Department of Transportation has installed steep grade advance warning systems on Wyoming mountain passes. However, concerns for out of control trucks on mountain passes are still ongoing. Hence, a supplementary study is necessary to enhance safety and effectiveness of the preexisting warning systems. Quantitative data of truck crashes on downgrades throughout the state of Wyoming were investigated; five representative downgrades were selected for investigating the effectiveness of warning signs, namely, WY-22 (Teton Pass), WY-14 & 16 in the Bighorn Mountains, as well as WY-28 (South Pass). The purpose of this study is to explore the effectiveness of advanced warning signs on mountain pass downgrades with respect to truck-related crash events and to discuss a safety evaluation study of Wyoming mountain passes and to make recommendations for improving the warning systems used to alert drivers to take special precautions on steep downgrades. A propensity score was estimated in order to quantify the effectiveness of warning signs on downgrades. The study found that the estimated probability of a truck crash occurring on untreated sites is 1.3 higher than treated sites based on matching propensity scores. Individual sign types were also investigated by negative binomial modeling for truck and all vehicle crashes. Chevron and trucker warning signs were found to be significant predictors in decreasing the frequency of crashes. GIS maps of warning sign and truck crash hotspots were generated for areas selected by performance measures listed in HSM. These maps were used to analyze the current warning sign system and several recommendations from the MUTCD were given.

Updating and Implementing the Grade Severity Rating System (GSRS) for Wyoming Mountain Passes

Author : Milhan Moomen
Publisher :
ISBN 13 : 9781687965295
Total Pages : 224 pages
Book Rating : 4.9/5 (652 download)

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Book Synopsis Updating and Implementing the Grade Severity Rating System (GSRS) for Wyoming Mountain Passes by : Milhan Moomen

Download or read book Updating and Implementing the Grade Severity Rating System (GSRS) for Wyoming Mountain Passes written by Milhan Moomen and published by . This book was released on 2019 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: The state of Wyoming like other western states is characterized by steep downgrades on mountainous highways. These downgrades present considerable crash risks to drivers of trucks and other heavy vehicles inexperienced or unfamiliar with the challenging terrain. This has resulted in crashes that have had devastating consequences on lives and property. A major contributory factor to truck crashes on mountain passes has been brake failure due to heating. The risk of truck brake failure on downgrades is high due to the large amounts of heat energy that have to be absorbed by the brake system. The Grade Severity Rating System (GSRS) was developed in the early 1980s to enhance truck safety on downgrades by recommending maximum safe descent speeds through Weight Specific Speed (WSS) signs. However, truck designs, brake and engine characteristics have changed during the intervening decades since the development of the GSRS. This has warranted updating the GSRS to reflect current truck characteristics. The GSRS model parameters were updated using field testing as part of this research. Validation tests conducted indicated the updated GSRS can recommend descent speeds that reduce the risk of brake failure. The second part of the research related to evaluating the safety effectiveness of downgrade warning signs as well as identifying factors impacting truck crash frequency/severity on mountain passes. The analysis showed that downgrade warning signs installed on mountain passes in the state are effective. A survey of intelligent transportation system (ITS) technologies identified applications that may be adopted to improve warning sign effectiveness. The results of the analyses also indicated that different factors including driver, vehicle, downgrade, and traffic characteristics influence crash frequency and severity on mountain passes. Suitable countermeasures were proposed to reduce crash frequency/severity. Implementation of the findings and recommendations from this research will engender driver compliance and confidence in the new advisory speeds, thereby improving mountain pass safety. Stakeholders that may benefit from this study include the Wyoming Highway patrol, Wyoming Department of Transportation (WYDOT), trucking companies and the general public.

Experimental Design for Evaluating the Safety Benefits of Railroad Advance Warning Signs

Author : William D. Berg
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Experimental Design for Evaluating the Safety Benefits of Railroad Advance Warning Signs by : William D. Berg

Download or read book Experimental Design for Evaluating the Safety Benefits of Railroad Advance Warning Signs written by William D. Berg and published by . This book was released on 1979 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents the findings and conclusions of a study to develop an experimental design and analysis plan for field testing and evaluation of the accident reduction potential of a proposed new railroad grade crossing advance warning sign. Several alternative sampling frameworks were initially developed to determine which might offer the most efficient design in terms of required sample size. The cost of undertaking the field studies and analyses was then evaluated so that it could be compared to the expected value or utility of the information to be derived from the study. The results indicated that the proposed accident study would be both experimentally and economically impractical. It was therefore recommended that an accident study not be undertaken. Several policy options were then examined.

Evaluating the Safety Benefits of Railroad Advance Warning Signs

Author : William D. Berg
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (547 download)

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Book Synopsis Evaluating the Safety Benefits of Railroad Advance Warning Signs by : William D. Berg

Download or read book Evaluating the Safety Benefits of Railroad Advance Warning Signs written by William D. Berg and published by . This book was released on 1979 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Experimantal Design for Evaluating the Safety Benefits of Railroad Advance Warning Signs

Author : W. D. Berg
Publisher :
ISBN 13 :
Total Pages : 58 pages
Book Rating : 4.:/5 (723 download)

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Book Synopsis Experimantal Design for Evaluating the Safety Benefits of Railroad Advance Warning Signs by : W. D. Berg

Download or read book Experimantal Design for Evaluating the Safety Benefits of Railroad Advance Warning Signs written by W. D. Berg and published by . This book was released on 1979 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Experimental Design for Evaluating the Safety Benefits of Railroad Advance Warning Signs

Author : Wm. D. Berg
Publisher :
ISBN 13 :
Total Pages : 63 pages
Book Rating : 4.:/5 (953 download)

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Book Synopsis Experimental Design for Evaluating the Safety Benefits of Railroad Advance Warning Signs by : Wm. D. Berg

Download or read book Experimental Design for Evaluating the Safety Benefits of Railroad Advance Warning Signs written by Wm. D. Berg and published by . This book was released on 1979 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Abstract: This report presents the findings and conclusions of a study to develop an experimental design and analysis plan for field testing and evaluation of the accident reduction potential of a proposed new railroad grade crossing advance warning sign. Several alternative sampling frameworks were initially developed to determine which might offer the most efficient design in terms of required sample size. because of the very large sample sizes associated with the alternative sampling frameworks, an analysis was undertaken to determine the minimum relative reduction in accident rate which would economically justify deployment of the new advance warning sign. The cost of undertaking the field studies and analyses was then evaluated so that it could be compared to the expected valye or utility of the information to be derived from the study. The results indicated that the proposed accident study would be both experimentally and economically impractical. It was therefore recommended that an accident study not be undertaken. Several policy options were then examined."--Technical report documentation page.

Gravel Roads

Author : Ken Skorseth
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Gravel Roads by : Ken Skorseth

Download or read book Gravel Roads written by Ken Skorseth and published by . This book was released on 2000 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.

Analysis & Summary of Accident Investigations, 1973-1976

Author : United States. Bureau of Motor Carrier Safety
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Analysis & Summary of Accident Investigations, 1973-1976 by : United States. Bureau of Motor Carrier Safety

Download or read book Analysis & Summary of Accident Investigations, 1973-1976 written by United States. Bureau of Motor Carrier Safety and published by . This book was released on 1977 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Florida. Governor's Highway Safety Commission
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.3/5 (126 download)

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Book Synopsis Newsletter by : Florida. Governor's Highway Safety Commission

Download or read book Newsletter written by Florida. Governor's Highway Safety Commission and published by . This book was released on 1970 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Observational Before-after Studies in Road Safety: Estimating the Effect of Highway and Traffic Engineering Measures on Road Safety

Author : Ezra Hauer
Publisher :
ISBN 13 :
Total Pages : 305 pages
Book Rating : 4.:/5 (173 download)

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Book Synopsis Observational Before-after Studies in Road Safety: Estimating the Effect of Highway and Traffic Engineering Measures on Road Safety by : Ezra Hauer

Download or read book Observational Before-after Studies in Road Safety: Estimating the Effect of Highway and Traffic Engineering Measures on Road Safety written by Ezra Hauer and published by . This book was released on 1997 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Managing Speed

Author :
Publisher : Transportation Research Board
ISBN 13 : 9780309065023
Total Pages : 444 pages
Book Rating : 4.0/5 (65 download)

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Book Synopsis Managing Speed by :

Download or read book Managing Speed written by and published by Transportation Research Board. This book was released on 1998 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB Special Report 254 - Managing Speed: Review of Current Practices for Setting and Enforcing Speed Limits reviews practices for setting and enforcing speed limits on all types of roads and provides guidance to state and local governments on appropriate methods of setting speed limits and related enforcement strategies. Following an executive summary, the report is presented in six chapters and five appendices.

The Financial Crisis Inquiry Report

Author : Financial Crisis Inquiry Commission
Publisher : Cosimo, Inc.
ISBN 13 : 1616405414
Total Pages : 692 pages
Book Rating : 4.6/5 (164 download)

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Book Synopsis The Financial Crisis Inquiry Report by : Financial Crisis Inquiry Commission

Download or read book The Financial Crisis Inquiry Report written by Financial Crisis Inquiry Commission and published by Cosimo, Inc.. This book was released on 2011-05-01 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Financial Crisis Inquiry Report, published by the U.S. Government and the Financial Crisis Inquiry Commission in early 2011, is the official government report on the United States financial collapse and the review of major financial institutions that bankrupted and failed, or would have without help from the government. The commission and the report were implemented after Congress passed an act in 2009 to review and prevent fraudulent activity. The report details, among other things, the periods before, during, and after the crisis, what led up to it, and analyses of subprime mortgage lending, credit expansion and banking policies, the collapse of companies like Fannie Mae and Freddie Mac, and the federal bailouts of Lehman and AIG. It also discusses the aftermath of the fallout and our current state. This report should be of interest to anyone concerned about the financial situation in the U.S. and around the world.THE FINANCIAL CRISIS INQUIRY COMMISSION is an independent, bi-partisan, government-appointed panel of 10 people that was created to "examine the causes, domestic and global, of the current financial and economic crisis in the United States." It was established as part of the Fraud Enforcement and Recovery Act of 2009. The commission consisted of private citizens with expertise in economics and finance, banking, housing, market regulation, and consumer protection. They examined and reported on "the collapse of major financial institutions that failed or would have failed if not for exceptional assistance from the government."News Dissector DANNY SCHECHTER is a journalist, blogger and filmmaker. He has been reporting on economic crises since the 1980's when he was with ABC News. His film In Debt We Trust warned of the economic meltdown in 2006. He has since written three books on the subject including Plunder: Investigating Our Economic Calamity (Cosimo Books, 2008), and The Crime Of Our Time: Why Wall Street Is Not Too Big to Jail (Disinfo Books, 2011), a companion to his latest film Plunder The Crime Of Our Time. He can be reached online at www.newsdissector.com.

Truck Escape Ramps

Author : David K. Witheford
Publisher : Transportation Research Board
ISBN 13 : 9780309053051
Total Pages : 68 pages
Book Rating : 4.0/5 (53 download)

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Book Synopsis Truck Escape Ramps by : David K. Witheford

Download or read book Truck Escape Ramps written by David K. Witheford and published by Transportation Research Board. This book was released on 1992 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis will be of interest to highway design engineers, maintenance personnel, safety and enforcement officials, traffic engineers, and others responsible for the safe operation of large trucks on highways. Information is provided on the critical aspects of site location, design criteria, and maintenance procedures, and their relationship to truck escape ramp performance. The safety of truck drivers, other road users, and occupants of roadside properties is often imperiled by the combination of heavy trucks and steep downgrades on highways. Frequently, gearing down, applying the brakes, and using the retarding power of the engine are not sufficient to control the truck, and serious crashes can result. Many states have constructed truck escape ramps to safely remove runaway trucks from the traffic stream. This report of the Transportation Research Board provides information on the location, design, construction materials, geometrics, and construction costs of truck escape ramps. Operational considerations, such as descriptions of advance warning signs, traffic control devices at the ramp, and vehicle removal procedures are described. Information on frequency and type of usage, maintenance of the ramps, and driver-related issues is also included.

Roadside Design Guide

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)

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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:

Measuring Personal Travel and Goods Movement

Author :
Publisher : Transportation Research Board
ISBN 13 : 0309085993
Total Pages : 151 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Measuring Personal Travel and Goods Movement by :

Download or read book Measuring Personal Travel and Goods Movement written by and published by Transportation Research Board. This book was released on 2004 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB Special Report 277 - Measuring Personal Travel and Goods Movement recommends a series of actions the U.S. Department of Transportation's Bureau of Transportation Statistics (BTS) should take to render its flagship surveys -- the National Household Travel Survey (NHTS) and the Commodity Flow Survey (CFS) -- more effective in meeting the needs of a broad spectrum of data users. The report also recommends approaches BTS and its survey partners should adopt to develop more effective survey methods and address institutional issues affecting survey stability and quality. Report Summary published in the October-September 2004 issue of the TR News.

AASHTO Transportation Glossary

Author :
Publisher : AASHTO
ISBN 13 : 1560514086
Total Pages : 236 pages
Book Rating : 4.5/5 (65 download)

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Book Synopsis AASHTO Transportation Glossary by :

Download or read book AASHTO Transportation Glossary written by and published by AASHTO. This book was released on 2009 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The 2009 AASHTO Transportation Glossary is an update and revision of the 1983 Transportation Glossary and the 1998 Transportation Glossary, which was unpublished. The largest additions in terminology were in bridge and drainage subjects. The new Glossary also includes lists of organizational acronyms, abbreviations, and other glossary references. Terms and definitions in this glossary were taken from an unpublished 1998 AASHTO Glossary and supplemented with definitions listed in AASHTO publications issued after 1998. Several additional sources were also referenced, including the Highway Capacity Manual, Manual on Uniform Traffic Control Devices, Code of Federal Regulations-Title 23, an FHWA list of roundabout terminology, and the Transportation Research Thesaurus. Glossary terms are listed in alphabetical order regardless of transportation mode. However, the glossary also includes two indexes-subject area and keyword-which provide cross references for the user."--AASHTO Bookstore website (viewed June 24, 2.

CDL Study Guide Book

Author : CDL Test Prep Team
Publisher : Test Prep Books
ISBN 13 : 9781628451672
Total Pages : 224 pages
Book Rating : 4.4/5 (516 download)

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Book Synopsis CDL Study Guide Book by : CDL Test Prep Team

Download or read book CDL Study Guide Book written by CDL Test Prep Team and published by Test Prep Books. This book was released on 2016-03 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Test Prep Book's CDL Study Guide Book: Test Preparation & Training Manual for the Commercial Drivers License (CDL) Exam Developed by Test Prep Books for test takers trying to achieve a passing score on the CDL exam, this comprehensive study guide includes: -Quick Overview -Test-Taking Strategies -Introduction -Driving Safely -Transporting Cargo Safely -Transporting Passengers Safely -Air Brakes -Combination Vehicles -Doubles and Triples -Tank Vehicles -Hazardous Materials -School Buses -Pre-Trip Vehicle Inspection Test -Basic Vehicle Control Skills Test -On-Road Driving -Practice Questions -Detailed Answer Explanations Disclaimer: CDL(R) is a registered trademark of Commercial Drivers License, which was not involved in the production of, and does not endorse, this product. Each section of the test has a comprehensive review created by Test Prep Books that goes into detail to cover all of the content likely to appear on the CDL test. The Test Prep Books CDL practice test questions are each followed by detailed answer explanations. If you miss a question, it's important that you are able to understand the nature of your mistake and how to avoid making it again in the future. The answer explanations will help you to learn from your mistakes and overcome them. Understanding the latest test-taking strategies is essential to preparing you for what you will expect on the exam. A test taker has to not only understand the material that is being covered on the test, but also must be familiar with the strategies that are necessary to properly utilize the time provided and get through the test without making any avoidable errors. Test Prep Books has drilled down the top test-taking tips for you to know. Anyone planning to take this exam should take advantage of the CDL training review material, practice test questions, and test-taking strategies contained in this Test Prep Books study guide.