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Author: Jonathan M. Re
Publisher: Transportation Research Board
Published: 2012
Total Pages: 54
ISBN-13: 0309223601
DOWNLOAD EBOOK →TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 431: Practices to Manage Traffic Sign Retroreflectivity includes examples of practices that illustrate how different types of transportation agencies might meet federal retroreflectivity requirements for traffic signs.
Author: Kent L. Black
Publisher: Transportation Research Board
Published: 1992
Total Pages: 60
ISBN-13: 9780309048699
DOWNLOAD EBOOK →Author: National Cooperative Highway Research Program
Publisher:
Published: 1969
Total Pages: 92
ISBN-13: 9780309223607
DOWNLOAD EBOOK →TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 431: Practices to Manage Traffic Sign Retroreflectivity includes examples of practices that illustrate how different types of transportation agencies might meet federal retroreflectivity requirements for traffic signs.
Author: Richard A. Cunard
Publisher: Transportation Research Board
Published: 1990
Total Pages: 148
ISBN-13: 9780309049108
DOWNLOAD EBOOK →This synthesis will be of interest to traffic engineers, maintenance managers, sign shop supervisors, and others interested in the maintenance of street and highway signs. Detailed information is presented on the current practices of state and local governments in managing the maintenance of street and highway signs within their jurisdictions. The maintenance of street and highway signs is viewed as a means for improving the effectiveness of a signing system. This report of the Transportation Research Board describes the maintenance practices of several state and local highway agencies along with the rationale for those practices. It covers inspection, refurbishing, and replacement practices, along with information on equipment and personnel requirements.
Author: American Association of State Highway and Transportation Officials. Task Force for Roadside Safety
Publisher:
Published: 1989
Total Pages: 560
ISBN-13:
DOWNLOAD EBOOK →Author: Stephanie C. Vereen
Publisher:
Published: 2002
Total Pages: 258
ISBN-13:
DOWNLOAD EBOOK →The main objective of this project was to determine, quantify, and present to the North Carolina Department of Transportation (NCDOT) alternative approaches for meeting the Federal Highway Administration's (FHWA) proposed minimum level of retroreflectivity for signs. This study used knowledge of the current NCDOT sign maintenance practices to synthesize a list of components and alternatives to comply with the standard. The fundamental contribution of the work lies in creating alternative methods to evaluating sign retroreflectivity to ensure compliance with a standard while minimizing the cost and labor required to do so.
Author: Hugh W. McGee
Publisher:
Published: 1998
Total Pages: 64
ISBN-13:
DOWNLOAD EBOOK →To assist agencies in developing a cost-effective program for timely replacement of ineffective signs, this document was prepared. Initially the report describes the principles of retroreflectivity, the types of retroreflective materials, and the proposed minimum retroreflectivity guidelines. Then, the report presents the concept of a sign management system, and provides guidance for developing a sign inventory, conducting sign inspections, and maintaining signs. The report concludes with discussing options that State and local agencies can follow for replacing their ineffective signs and offers a minimum and desirable program.
Author: Howard Preston
Publisher:
Published: 2010
Total Pages: 113
ISBN-13:
DOWNLOAD EBOOK →In 2008 the FHWA added new regulations to the MUT CD regarding minimum levels of retroreflectivity for traffic signs. This action changed the guidance relating to maintaining minimum levels of retroreflectivity from a recommended practice to a required activity. The new regulations went into effect at the national level in January, 2008 and were added to Minnesota's Manual in February, 2008. The adoption of these new regulations means that all agencies are required to adopt a method of maintaining their signs by January, 2012, to have all ground mounted signs meet the new requirements by January, 2015 and all signs meet the requirements by January, 2018. This Handbook is intended to provide local agencies with information to help maintain the traffic signs on their system of roads. The Handbook identifies maintenance methods, provides an overview of estimated annual maintenance costs and includes a discussion of policy development, conducting engineering studies and a summary of what is known about the effectiveness of traffic signs. A key part of the message is that estimated costs associated with meeting the new requirements far exceeds the typical sign maintenance budget for most local agencies and that the only part of the cost equation that the agencies control is the size of their inventory. As a result, agencies are encouraged to determine what they can afford for a sign maintenance budget and then take the necessary steps to adjust their inventory to match.
