Guidelines On The Selection And Design Of Messages For Changeable Message Signs
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Guidelines On The Use And Operation Of Changeable Message Signs
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Author : Conrad L. Dudek
language : en
Publisher:
Release Date : 1992
Guidelines On The Use And Operation Of Changeable Message Signs written by Conrad L. Dudek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Highway communications categories.
This report is intended to be a primer on the characteristics that affect the design, use and operations of changeable message signs (CMSs), and to provide guidance on the selection of the appropriate type of CMS display. Guidelines on the selection and design of CMS messages are presented in a companion report, Report No. FHWA/TX-92/1232-10 entitled "Guidelines on the Selection and Design of Messages for Changeable Message Signs". This report is an update and consolidation of the following reports: (1) C.L. Dudek and R.D. Huchingson, "Manual on Real-Time Motorist Information Displays", FHWA-IP-86-16, August 1986; (2) C.L. Dudek, "Guidelines on the Use of Changeable Message Signs", FHWA-TS-90-043, May 1991; and (3) C.L. Dudek, "Portable Changeable Message Signs at Work Zones", FHWA/TX-85/07+292-4, July 1984
Changeable Message Sign Displays During Non Incident Non Roadwork Periods
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Author : Conrad L. Dudek
language : en
Publisher: Transportation Research Board
Release Date : 2008
Changeable Message Sign Displays During Non Incident Non Roadwork Periods written by Conrad L. Dudek and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Technology & Engineering categories.
Guidelines On The Selection And Design Of Messages For Changeable Message Signs
DOWNLOAD
Author : Conrad L. Dudek
language : en
Publisher:
Release Date : 1992
Guidelines On The Selection And Design Of Messages For Changeable Message Signs written by Conrad L. Dudek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Express highways categories.
Development Of A Field Guide For Portable Changeable Message Sign Use In Work Zones
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Author : Gerald L. Ullman
language : en
Publisher:
Release Date : 2005
Development Of A Field Guide For Portable Changeable Message Sign Use In Work Zones written by Gerald L. Ullman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Road work zones categories.
In this report, researchers document the development of a field guide for portable changeable message sign use in work zones. Included in the report is a summary and critique of available national and state-level standards and guidance on portable changeable message sign (PCMS) use, description of the components included in the field guide, and implementation considerations for field guide deployment. The field guide was developed as a stand-alone product, but is included for illustrative purposes as an appendix to this report.
Advanced Notification Messages And Use Of Sequential Portable Changeable Message Signs In Work Zones
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Author :
language : en
Publisher:
Release Date : 2005
Advanced Notification Messages And Use Of Sequential Portable Changeable Message Signs In Work Zones written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Traffic signs and signals categories.
In this report, researchers document the results of a laptop-based human factors study of alternative formats of presenting advance notice work zone information on portable changeable message signs (PCMSs) and a Texas Transportation Institute (TII) driving simulator study of the ability of motorists to capture and process information on two PCMSs used in sequence to convey information about upcoming traffic situations. Based on the studies, researchers recommend that messages that require the display of calendar dates for future roadwork and other traffic control activities should utilize a message format consisting of the three-character abbreviation of the month (e.g., APR for April) in conjunction with the date. When future work activities span several days all in the same month, the month needs be noted only once in the message (i.e., APR 21-23) rather than repeating the month (i.e., APR 21-APR 23). The ITI driver simulator study results indicate the need to keep overall messages at or below the four-unit maximum recommended in existing guidelines. Researchers found that presenting five units of information on sequential PCMSs resulted in low comprehension rates, below what would be acceptable for highway applications. However, by keeping the message length to four units, it does appear that the use of sequential PCMSs will result in comprehension rates comparable to those obtained by presenting the same information at a single location on a large dynamic message sign (DMS), and is recommended as an acceptable formatting approach for TxDOT. Comprehension may be enhanced by repeating one of the units of information on both PCMSs.
Policies For Use Of Changeable Message Signs In Highway Work Zones
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Author : Siim Soot
language : en
Publisher:
Release Date : 1999
Policies For Use Of Changeable Message Signs In Highway Work Zones written by Siim Soot and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Electronic traffic controls categories.
Portable Changeable Message Sign (PCMS) systems used in work zones are programmable supplementary traffic control devices that display messages composed of letters, symbols or both and provide information and instructions to the traveling public approaching work zone activities. The study seeks to develop warrants and criteria for PCMS deployment in Illinois highway work zones. It is recommended that PCMS systems be used during long- and intermediate-term stationary work, for traffic control through incident areas, and in projects where advance-time notification is needed. The discussion focuses on spacing criteria, number of signs required, sign visibility and message legibility, text alignment, distance criteria, message length, duration and type, project-level operational guidelines, message storage and dissemination, repair, maintenance and utility costs, as well as control and coordination issues. The study concludes that additional research is needed in order to: develop a comprehensive standardized statewide database of messages and message abbreviations; develop a comprehensive repository with information about the technology of the various components of the PCMS units; coordinate PCMS units used in highway work zones with a corridor or regional ATMS system; and maintain information about the use of a PCMS unit in a work zone project and possibly integrate it with other relevant information in a management system.
Highway Operations Volume
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Author :
language : en
Publisher:
Release Date : 1998
Highway Operations Volume written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Express highways categories.
Development Of Manuals For The Effective Use Of Variable Message Signs Final Report
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Author : John S. Miller
language : en
Publisher:
Release Date : 1995
Development Of Manuals For The Effective Use Of Variable Message Signs Final Report written by John S. Miller and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Electronic traffic controls categories.
A comprehensive research effort to develop operator's manuals for variable message signs (VMSs) was undertaken to improve the operations of both portable and permanent (fixed-site) VMSs in Virginia. This report describes the development of two manuals, the Permanent VMS Operator's Manual and the Portable VMS Operator's Manual which will be published separately. These manuals were based on information obtained from the literature, VMS operators, and motorists. Issues addressed by the manuals include when a VMS should be used, where a portable VMS should be placed, and the design of the VMS message. The manuals are not simply a list of pre-defined messages. They are a series of concise modules guiding the operator through the thought process required to use a VMS effectively. The operator follows a logical decision tree from module to module, to achieve the best placement and best message for a VMS. Effective VMS use actually requires a complex thought process, despite the apparent simplicity of the messages. The manuals include essential material about VMS operation. Based on theoretical calculations and motorists' experiences, it is strongly recommended that a VMS use no more than two message screens. A single message screen is preferred. VMSs should be used only to advise drivers of changed traffic conditions and convey specific traffic information concisely. Due to limited information capabilities, VMSs should be used in conjunction with other means of communication such as highway advisory radio and static signs. Most importantly, it is crucial that credibility be maintained. Incorrect information can have extreme consequences in terms of VMS effectiveness.
Improved Dynamic Message Sign Messages And Operations
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Author : Conrad L. Dudek
language : en
Publisher:
Release Date : 2000
Improved Dynamic Message Sign Messages And Operations written by Conrad L. Dudek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Highway communications categories.
Variable Message Signage Content
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Author : Max Vercruyssen
language : en
Publisher:
Release Date : 1997
Variable Message Signage Content written by Max Vercruyssen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Comprehension categories.