Guidelines For 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

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

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.

Design Adequacy of Two Free Right-turn Lanes at Unsignalized Intersections on Rural Two-lane Highways

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Author : Brian A. Moen
Publisher :
ISBN 13 :
Total Pages : 204 pages
Book Rating : 4.:/5 (343 download)

Book Synopsis Design Adequacy of Two Free Right-turn Lanes at Unsignalized Intersections on Rural Two-lane Highways by : Brian A. Moen

Download or read book Design Adequacy of Two Free Right-turn Lanes at Unsignalized Intersections on Rural Two-lane Highways written by Brian A. Moen and published by . This book was released on 1996 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Safety Effects of Free Right-turn Lanes at Unsignalized Intersections on Rural Two-lane Highways

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Author : Ramaratnam Ram Bishu
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (341 download)

Book Synopsis Safety Effects of Free Right-turn Lanes at Unsignalized Intersections on Rural Two-lane Highways by : Ramaratnam Ram Bishu

Download or read book Safety Effects of Free Right-turn Lanes at Unsignalized Intersections on Rural Two-lane Highways written by Ramaratnam Ram Bishu and published by . This book was released on 1996 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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

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Author : Patrick T. McCoy
Publisher :
ISBN 13 :
Total Pages : 33 pages
Book Rating : 4.:/5 (342 download)

Book Synopsis Volume Warrant for Free Right-turn Lanes at Unsignalized Intersections on Rural Two-lane Highways by : Patrick T. McCoy

Download or read book Volume Warrant for Free Right-turn Lanes at Unsignalized Intersections on Rural Two-lane Highways written by Patrick T. McCoy and published by . This book was released on 1996 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Traffic Engineering Handbook

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

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.

Traffic Signal Timing Manual

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Author : U.s. Department of Transportation
Publisher : CreateSpace
ISBN 13 : 9781508557173
Total Pages : 286 pages
Book Rating : 4.5/5 (571 download)

Book Synopsis Traffic Signal Timing Manual by : U.s. Department of Transportation

Download or read book Traffic Signal Timing Manual written by U.s. Department of Transportation and published by CreateSpace. This book was released on 2015-02-20 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report serves as a comprehensive guide to traffic signal timing and documents the tasks completed in association with its development. The focus of this document is on traffic signal control principles, practices, and procedures. It describes the relationship between traffic signal timing and transportation policy and addresses maintenance and operations of traffic signals. It represents a synthesis of traffic signal timing concepts and their application and focuses on the use of detection, related timing parameters, and resulting effects to users at the intersection. It discusses advanced topics briefly to raise awareness related to their use and application. The purpose of the Signal Timing Manual is to provide direction and guidance to managers, supervisors, and practitioners based on sound practice to proactively and comprehensively improve signal timing. The outcome of properly training staff and proactively operating and maintaining traffic signals is signal timing that reduces congestion and fuel consumption ultimately improving our quality of life and the air we breathe. This manual provides an easy-to-use concise, practical and modular guide on signal timing. The elements of signal timing from policy and funding considerations to timing plan development, assessment, and maintenance are covered in the manual. The manual is the culmination of research into practices across North America and serves as a reference for a range of practitioners, from those involved in the day to day management, operation and maintenance of traffic signals to those that plan, design, operate and maintain these systems.

Guidelines for Right-turn Treatments at Unsignalized Intersections and Driveways

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Author : Tanweer Hasan
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.3/5 (555 download)

Book Synopsis Guidelines for Right-turn Treatments at Unsignalized Intersections and Driveways by : Tanweer Hasan

Download or read book Guidelines for Right-turn Treatments at Unsignalized Intersections and Driveways written by Tanweer Hasan and published by . This book was released on 1996 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Guidelines for right-turn treatments at unsignalized intersections and driveways on the state highway system of Kansas were developed in this study. Two types of treatments, full-width lane and taper, were considered over the do-nothing radius treatment. THe guidelines were based on the results of an economic analysis conducted over a wide range of traffic volumes and speeds. A simple model was developed to determine the operational effects of right-turn movements at unsignalized intersections and driveways on high-speed highways. The operational effects were estimated in terms of delay and excess fuel consumption experienced by through vehicles due to the right turns. The relationship between speed differential and accidents was used to estimate the reduction in right-turn same direction rear-end accidents that would be expected to result from the provision of a right-turn treatment. Comparison with other guidelines and validation of existing right-turn treatments at the study sites indicate that the range of the guidelines developed in this study isre reasonable. They are also more definitive because they consider highway operating speed. They are more flexible in determining an appropriate treatment because an intermediate taper treatment is considered.

Guidelines for the inclusion of left-turn lanes at rural highway intersections

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Author :
Publisher :
ISBN 13 :
Total Pages : 142 pages
Book Rating : 4.3/5 (555 download)

Book Synopsis Guidelines for the inclusion of left-turn lanes at rural highway intersections by :

Download or read book Guidelines for the inclusion of left-turn lanes at rural highway intersections written by and published by . This book was released on 1970 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provision of left turn lanes is a major problem which lacks an objective approach. Various techniques and procedures in use have been reviewed. Traffic characteristics at typical Iowa intersections have been measured. A rational approach for inclusion of a left turn lane has been developed, based on relating the benefits to the road user to the cost of providing the added turing lane. An analysis of field data gathered under this project indicates that the use of theoretical distribution to describe vehicle headways is not applicable to rural Iowa two lane roads. As an alternate approach the mass of field data gathered were examined using multiple regression techniques to yield equations for predicting stops and delays. The benefit-cost ratio technique is recommended as the criterion for decision making.

Roundabouts

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

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.

Guidelines for Right-turn Lanes on Urban Highways

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Author : Patrick T. McCoy
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.3/5 (555 download)

Book Synopsis Guidelines for Right-turn Lanes on Urban Highways by : Patrick T. McCoy

Download or read book Guidelines for Right-turn Lanes on Urban Highways written by Patrick T. McCoy and published by . This book was released on 1993 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Development of Left-turn Lane Warrants for Unsignalized Intersections

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Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (844 download)

Book Synopsis Development of Left-turn Lane Warrants for Unsignalized Intersections by :

Download or read book Development of Left-turn Lane Warrants for Unsignalized Intersections written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Left-turn movements at intersections, including driveways - especially movements that are made from lanes that are shared with through traffic - cause delays and adversely impact safety. Although left-turn warrants have been updated, many agencies still use research performed by M. Harmelink from the mid-1960s. While most states use procedures that are based on Harmelink, a number of limitations of Harmelink's procedure have been identified. Economic analysis can provide a useful method for combining traffic operations and safety benefits of left-turn lanes to identify situations in which left-turn lanes are and are not justified economically. This project used a benefit-cost approach to determine when a left-turn lane would be justified. The steps included simulation to determine delay savings from installing a left-turn lane, crash costs and crash reduction savings determined from safety performance functions and accident modification factors available in the "Highway Safety Manual," and construction costs. Left-turn lane warrants were developed for rural two-lane highways, rural four-lane highways, and urban and suburban roadways. In addition, warrants for bypass lanes were developed for rural two-lane highways. A "Design Guide on Left-Turn Accommodations at Unsignalized Intersections" was developed that discusses left-turn lane designs, traffic control treatments, and case study examples.

Pedestrian Facilities Users Guide: Providing Safety and Mobility

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Author : Charles V. Zegeer
Publisher : DIANE Publishing
ISBN 13 : 1428995501
Total Pages : 164 pages
Book Rating : 4.4/5 (289 download)

Book Synopsis Pedestrian Facilities Users Guide: Providing Safety and Mobility by : Charles V. Zegeer

Download or read book Pedestrian Facilities Users Guide: Providing Safety and Mobility written by Charles V. Zegeer and published by DIANE Publishing. This book was released on 2002 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This guide is intended to provide information on how to identify safety and mobility needs for pedestrians with the roadway right-of-way. Useful for engineers, planners, safety professionals and decision-makers, the guide covers such topics as: the Walking Environment including sidewalks, curb ramps, crosswalks, roadway lighting and pedestrian over and under passes; Roadway Design including bicycle lanes, roadway narrowing, reducing the number of lanes, one-way/two-way streets, right-turn slip lanes and raised medians; Intersections with roundabouts, T-intersections and median barriers; and Traffic calming designs.

Left-turn Accommodations at Unsignalized Intersections

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

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.

Access Management Manual

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

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.

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

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

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:

The Development of Criteria for the Treatment of Right Turn Movements on Rural Roads

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Author : Benjamin H. Cottrell
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.3/5 (555 download)

Book Synopsis The Development of Criteria for the Treatment of Right Turn Movements on Rural Roads by : Benjamin H. Cottrell

Download or read book The Development of Criteria for the Treatment of Right Turn Movements on Rural Roads written by Benjamin H. Cottrell and published by . This book was released on 1981 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research-was to develop criteria or guidelines for the treatment of right turn movements at nonsignalized intersections on rural roads. It was necessary for the criteria to be applicable for a wide range of conditions. A survey of state departments of transportation and Virginia Department of Highways and Transportation district traffic engineers identified the criteria presently used and the factors to be considered in establishing criteria. The decisions for right turn treatments are primarily based on judgment or rule of thumb. Field work identified the range of conditions and effectiveness of the treatments. The guidelines were developed through an analysis of the field data, the survey, and judgment. They are based on the peak hour (or design hour) volumes for right turn traffic and total traffic on the approach to the right turn treatment. Guidelines are available for 2-lane and 4-lane roadways. Other factors to be considered are noted. It is recommended that the guidelines, presented in this report be adopted by the Virginia Department of Highways and Transportation as an aid in selecting the appropriate treatment for right turn movements on rural roads.

Roadway Lighting Handbook

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

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: