Safety of U-turns at Unsignalized Median Openings

Safety of U-turns at Unsignalized Median Openings PDF

Author: Ingrid B. Potts

Publisher: Transportation Research Board

Published: 2004

Total Pages: 142

ISBN-13: 0309088054

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"TRB's National Cooperative Highway Research Program (NCHRP) Report 524: Safety of U-Turns at Unsignalized Median Openings includes recommended guidelines for locating and designing unsignalized median openings, and a methodology for comparing the relative safety performance of different designs"--Publisher's description.

State of the Practice in Highway Access Management

State of the Practice in Highway Access Management PDF

Author: Jerome S. Gluck

Publisher: Transportation Research Board

Published: 2010

Total Pages: 124

ISBN-13: 0309143055

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This synthesis reports how various agencies have acted on the various components of an access management program, what have been barriers to action, and how new efforts might improve implementation of access management strategies. Primary focus areas considered are legal and legislative bases, contents of policies and programs, implementation aspects, reported effectiveness of program implementation, and profiles of contemporary practice. This synthesis reports on the state of the practice with respect to planning, highway design, development review and permitting, and other focus areas where access management is typically incorporated. The emphasis is placed on states, but counties, municipalities, and metropolitan planning organizations are also considered.

Unsignalized Full Median Openings in Close Proximity to Signalized Intersections

Unsignalized Full Median Openings in Close Proximity to Signalized Intersections PDF

Author: Karen Dixon

Publisher:

Published: 2020

Total Pages: 94

ISBN-13: 9780309481144

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Many agencies discourage access within the functional area of a signalized intersection, as recommended in current access management guidelines, which also suggests that unsignalized median openings be bidirectional openings designed for only left turns from the roadway (and possibly U-turns). This report details transportation agency efforts to better quantify the operational and safety performance associated with unsignalized full median openings located near upstream and downstream traffic signals that have at least one turning bay.

Recent Roadway Geometric Design Research for Improved Safety and Operations

Recent Roadway Geometric Design Research for Improved Safety and Operations PDF

Author: Marcus Brewer

Publisher: Transportation Research Board

Published: 2012

Total Pages: 90

ISBN-13: 0309223598

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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.

Access Management Manual

Access Management Manual PDF

Author: Kristine Williams

Publisher:

Published: 2014

Total Pages: 529

ISBN-13: 9780309295413

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"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.

Freight Data Cost Elements

Freight Data Cost Elements PDF

Author: José Holguín-Veras

Publisher: Transportation Research Board

Published: 2013

Total Pages: 130

ISBN-13: 0309258995

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"TRB's National Cooperative Freight Research Program (NCFRP) Report 22: Freight Data Cost Elements identifies the specific types of direct freight transportation cost data elements required for public investment, policy, and regulatory decisionmaking. The report also describes and assesses different strategies for identifying and obtaining the needed cost data elements"--Publisher's description.