Design Adequacy Of Two Free Right Turn Lanes At Unsignalized Intersections On Rural Two Lane Highways

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Guidelines for Free Right-turn Lanes at Unsignalized Intersections on Rural Two-lane Highways

Author :
Publisher :
ISBN 13 :
Total Pages : 128 pages
Book Rating : 4.3/5 (555 download)

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Book Synopsis Guidelines for Free Right-turn Lanes at Unsignalized Intersections on Rural Two-lane Highways by :

Download or read book Guidelines for Free Right-turn Lanes at Unsignalized Intersections on Rural Two-lane Highways written by and published by . This book was released on 1995 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Free right-turn (FRT) lanes are turning roadways at intersections that provide for free-flowing right-turn movements. The objective of the research presented in this report was to develop guidelines for FRT lanes at unsignalized intersections on rural two-lane highways in Nebraska. The development of the guidelines was based on a benefit-cost analysis, which determined the right-turn volumes required to justify the construction and maintenance of FRT lanes at these locations. The research involved the evaluation of the operational and safety effects of FRT lanes. The operational effects of FRT lanes were analyzed using kinematic and traffic flow models. Accident data analysis, field studies, and computer simulation of truck dynamics were used to evaluate the safety effects of FRT lanes. The results of these analyses were also used to determine acceptable design criteria for FRT lanes. A survey of other state agencies was conducted to identify any existing guidelines, design criteria, and experience that might be useful in developing the guidelines and evaluating the design criteria. Also, the concerns of citizens opposed to the removal of FRT lanes were examined in an effort to develop guidelines that might effectively address these concerns. The results of the research indicate that design-year right-turn AADTs ranging from 440 to 825 vehicles per day, depending on the percentage of trucks, are required to warrant a FRT lane at an unsignalized intersection of rural two-lane highways. A design speed of 40 mph was found to be a realistic design speed and the most cost-effective design speed for FRT lanes. However, design speeds up to 55 mph do not significantly reduce the cost effectiveness of a FRT lane. The AASHTO design criteria for curves on open highways were found to be appropriate for designing the curvature of FRT lanes. The AASHTO criteria for minimum-radii intersection curves were not acceptable. Also, acceleration lanes were found to improve the safety of the merging operations associated with FRT lanes. The results of the accident data analysis do not support the perceptions of concerned citizens regarding the safety benefits of FRT lanes. FRT lanes were not found to affect the frequency, severity, or types of accidents that occur at unsignalized intersections on rural two-lane highways. Thus, FRT lanes should not be perceived, or promoted, as traffic safety improvements. The benefits of FRT lanes are limited to improving the efficiency of right-turn movements.

Roundabouts

Author : Lee August Rodegerdts
Publisher : Transportation Research Board
ISBN 13 : 0309155118
Total Pages : 407 pages
Book Rating : 4.3/5 (91 download)

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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.

Traffic Engineering Handbook

Author : ITE (Institute of Transportation Engineers)
Publisher : John Wiley & Sons
ISBN 13 : 1118762304
Total Pages : 688 pages
Book Rating : 4.1/5 (187 download)

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Book Synopsis Traffic Engineering Handbook by : ITE (Institute of Transportation Engineers)

Download or read book Traffic Engineering Handbook written by ITE (Institute of Transportation Engineers) and published by John Wiley & Sons. This book was released on 2016-01-26 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: Get a complete look into modern traffic engineering solutions Traffic Engineering Handbook, Seventh Edition is a newly revised text that builds upon the reputation as the go-to source of essential traffic engineering solutions that this book has maintained for the past 70 years. The updated content reflects changes in key industry standards, and shines a spotlight on the needs of all users, the design of context-sensitive roadways, and the development of more sustainable transportation solutions. Additionally, this resource features a new organizational structure that promotes a more functionally-driven, multimodal approach to planning, designing, and implementing transportation solutions. A branch of civil engineering, traffic engineering concerns the safe and efficient movement of people and goods along roadways. Traffic flow, road geometry, sidewalks, crosswalks, cycle facilities, shared lane markings, traffic signs, traffic lights, and more—all of these elements must be considered when designing public and private sector transportation solutions. Explore the fundamental concepts of traffic engineering as they relate to operation, design, and management Access updated content that reflects changes in key industry-leading resources, such as the Highway Capacity Manual (HCM), Manual on Uniform Traffic Control Devices (MUTCD), AASSHTO Policy on Geometric Design, Highway Safety Manual (HSM), and Americans with Disabilities Act Understand the current state of the traffic engineering field Leverage revised information that homes in on the key topics most relevant to traffic engineering in today's world, such as context-sensitive roadways and sustainable transportation solutions Traffic Engineering Handbook, Seventh Edition is an essential text for public and private sector transportation practitioners, transportation decision makers, public officials, and even upper-level undergraduate and graduate students who are studying transportation engineering.

Transportation Research Record

Author :
Publisher :
ISBN 13 :
Total Pages : 924 pages
Book Rating : 4.3/5 (555 download)

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Book Synopsis Transportation Research Record by :

Download or read book Transportation Research Record written by and published by . This book was released on 1996 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Left-turn Accommodations at Unsignalized Intersections

Author : Kay Fitzpatrick
Publisher : Transportation Research Board
ISBN 13 : 0309258987
Total Pages : 62 pages
Book Rating : 4.3/5 (92 download)

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Book Synopsis Left-turn Accommodations at Unsignalized Intersections by : Kay Fitzpatrick

Download or read book Left-turn Accommodations at Unsignalized Intersections written by Kay Fitzpatrick and published by Transportation Research Board. This book was released on 2013 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: "TRB's National Cooperative Highway Research Program (NCHRP) Report 745: Left-Turn Accommodations at Unsignalized Intersections presents guidance for the selection and design of left-turn accommodations at unsignalized intersections. The report includes 11 case studies of typical situations that illustrate the use of the guidance." -- publisher's description.

A Policy on Geometric Design of Highways and Streets, 2018

Author :
Publisher :
ISBN 13 : 9781523119592
Total Pages : pages
Book Rating : 4.1/5 (195 download)

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Book Synopsis A Policy on Geometric Design of Highways and Streets, 2018 by :

Download or read book A Policy on Geometric Design of Highways and Streets, 2018 written by and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Highway engineers, as designers, strive to meet the needs of highway users while maintaining the integrity of the environment. Unique combinations of design controls and constraints that are often conflicting call for unique design solutions. A Policy on Geometric Design of Highways and Streets provides guidance based on established practices that are supplemented by recent research. This document is also intended as a comprehensive reference manual to assist in administrative, planning, and educational efforts pertaining to design formulation

A Policy on Geometric Design of Highways and Streets, 1994

Author : American Association of State Highway and Transportation Officials
Publisher : American Association of State Highway & Transportation Officials
ISBN 13 :
Total Pages : 1072 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis A Policy on Geometric Design of Highways and Streets, 1994 by : American Association of State Highway and Transportation Officials

Download or read book A Policy on Geometric Design of Highways and Streets, 1994 written by American Association of State Highway and Transportation Officials and published by American Association of State Highway & Transportation Officials. This book was released on 1995 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Policy on Geometric Design of Highways and Streets, provides the design professional guidance by referencing a recommended range of values for critical dimensions and design.

A Policy on Design Standards--interstate System

Author :
Publisher : Aashto
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.3/5 (555 download)

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Book Synopsis A Policy on Design Standards--interstate System by :

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:

Guide for the Planning, Design, and Operation of Pedestrian Facilities

Author :
Publisher : AASHTO
ISBN 13 : 1560512717
Total Pages : 142 pages
Book Rating : 4.5/5 (65 download)

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Book Synopsis Guide for the Planning, Design, and Operation of Pedestrian Facilities by :

Download or read book Guide for the Planning, Design, and Operation of Pedestrian Facilities written by and published by AASHTO. This book was released on 2004 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Access Management Manual

Author : Kristine Williams
Publisher :
ISBN 13 : 9780309295413
Total Pages : 529 pages
Book Rating : 4.2/5 (954 download)

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Book Synopsis Access Management Manual by : Kristine Williams

Download or read book Access Management Manual written by Kristine Williams and published by . This book was released on 2014 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Since the publication of the first edition of the Access Management Manual, the context for transportation planning and roadway design in the United States has been transformed. Transportation agencies and local governments are under growing pressure to integrate land use and transportation policy and achieve a more sustainable, energy-efficient transportation system. This second edition of the manual responds to these developments by addressing access management comprehensively, as a critical part of network and land use planning. The content is interdisciplinary, with guidance pertinent to various levels of government as well as to pedestrians, bicyclists, and motorized vehicles, including trucks and buses, and is strongly grounded in decades of research, engineering science, and professional experience. Greater emphasis is placed on appropriate location of access, and guidance is refined to provide appropriate consideration of context and community issues. Substantial updates aid state and local agencies in managing access to corridor development effectively. Specific guidance on network and circulation planning and modal considerations is included, as well as guidance on effective site access and circulation design. A chapter on corridor management reinforces these concepts with a framework for application of access management in different contexts, along with appropriate strategies for each context. There are also new chapters on network planning, regional access management policies and programs, interchange area access management, auxiliary lane warrants and design, and right-of-way and access control. The manual concludes with an extensive menu of access management techniques and information on their application"--Provided by publisher.

A Guide for Achieving Flexibility in Highway Design

Author :
Publisher : AASHTO
ISBN 13 : 1560512598
Total Pages : 138 pages
Book Rating : 4.5/5 (65 download)

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Book Synopsis A Guide for Achieving Flexibility in Highway Design by :

Download or read book A Guide for Achieving Flexibility in Highway Design written by and published by AASHTO. This book was released on 2004 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Context-sensitive solutions (CSS) reflect the need to consider highway projects as more than just transportation facilities. Depending on how highway projects are integrated into the community, they can have far-reaching impacts beyond their traffic or transportation function. CSS is a comprehensive process that brings stakeholders together in a positive, proactive environment to develop projects that not only meet transportation needs, but also improve or enhance the community. Achieving a flexible, context-sensitive design solution requires designers to fully understand the reasons behind the processes, design values, and design procedures that are used. This AASHTO Guide shows highway designers how to think flexibly, how to recognize the many choices and options they have, and how to arrive at the best solution for the particular situation or context. It also strives to emphasize that flexible design does not necessarily entail a fundamentally new design process, but that it can be integrated into the existing transportation culture. This publication represents a major step toward institutionalizing CSS into state transportation departments and other agencies charged with transportation project development.

Recent Roadway Geometric Design Research for Improved Safety and Operations

Author : Marcus Brewer
Publisher : Transportation Research Board
ISBN 13 : 0309223598
Total Pages : 90 pages
Book Rating : 4.3/5 (92 download)

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Book Synopsis Recent Roadway Geometric Design Research for Improved Safety and Operations by : Marcus Brewer

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.

Highway Safety Manual

Author :
Publisher : AASHTO
ISBN 13 : 1560514779
Total Pages : 886 pages
Book Rating : 4.5/5 (65 download)

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Book Synopsis Highway Safety Manual by :

Download or read book Highway Safety Manual written by and published by AASHTO. This book was released on 2010 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Highway Safety Manual (HSM) is a resource that provides safety knowledge and tools in a useful form to facilitate improved decision making based on safety performance. The focus of the HSM is to provide quantitative information for decision making. The HSM assembles currently available information and methodologies on measuring, estimating and evaluating roadways in terms of crash frequency (number of crashes per year) and crash severity (level of injuries due to crashes). The HSM presents tools and methodologies for consideration of 'safety' across the range of highway activities: planning, programming, project development, construction, operations, and maintenance. The purpose of this is to convey present knowledge regarding highway safety information for use by a broad array of transportation professionals"--p. xxiii, vol. 1.

Roadway Lighting Handbook

Author : United States. Federal Highway Administration. Office of Traffic Operations
Publisher :
ISBN 13 :
Total Pages : 268 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Roadway Lighting Handbook by : United States. Federal Highway Administration. Office of Traffic Operations

Download or read book Roadway Lighting Handbook written by United States. Federal Highway Administration. Office of Traffic Operations and published by . This book was released on 1978 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Effective Utilization of Street Width on Urban Arterials

Author : Douglas W. Harwood
Publisher : Transportation Research Board
ISBN 13 : 9780309048538
Total Pages : 60 pages
Book Rating : 4.0/5 (485 download)

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Book Synopsis Effective Utilization of Street Width on Urban Arterials by : Douglas W. Harwood

Download or read book Effective Utilization of Street Width on Urban Arterials written by Douglas W. Harwood and published by Transportation Research Board. This book was released on 1990 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Traffic Control Systems Handbook

Author :
Publisher :
ISBN 13 :
Total Pages : 670 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Traffic Control Systems Handbook by :

Download or read book Traffic Control Systems Handbook written by and published by . This book was released on 1976 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook, which was developed in recognition of the need for the compilation and dissemination of information on advanced traffic control systems, presents the basic principles for the planning, design, and implementation of such systems for urban streets and freeways. The presentation concept and organization of this handbook is developed from the viewpoint of systems engineering. Traffic control studies are described, and traffic control and surveillance concepts are reviewed. Hardware components are outlined, and computer concepts, and communication concepts are stated. Local and central controllers are described, as well as display, television and driver information systems. Available systems technology and candidate system definition, evaluation and implementation are also covered. The management of traffic control systems is discussed.