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Portable Changeable Message Signs At Work Zones
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Book Synopsis Guidance for the Use of Portable Changeable Message Signs in Work Zones by : American Traffic Safety Services Association
Download or read book Guidance for the Use of Portable Changeable Message Signs in Work Zones written by American Traffic Safety Services Association and published by . This book was released on 2013 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The objectives of this document are: To introduce portable changeable message sign (PCMS) exploratory strategies in work zones and convey their benefits and limitations; To discuss when and how to implement the PCMS strategies; To present other key aspects to consider before and during implementation."--p. 4.
Book Synopsis Portable Changeable Message Signs at Work Zones by : Conrad L. Dudek
Download or read book Portable Changeable Message Signs at Work Zones written by Conrad L. Dudek and published by . This book was released on 1984 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Policies for Use of Changeable Message Signs in Highway Work Zones by : Siim Soot
Download or read book Policies for Use of Changeable Message Signs in Highway Work Zones written by Siim Soot and published by . This book was released on 1999 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Interim Guidelines for Portable Changeable Message Signs in Work Zones by : Minnesota. Department of Transportation
Download or read book Interim Guidelines for Portable Changeable Message Signs in Work Zones written by Minnesota. Department of Transportation and published by . This book was released on 1990 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of a Field Guide for Portable Changeable Message Sign Use in Work Zones by : Gerald L. Ullman
Download or read book Development of a Field Guide for Portable Changeable Message Sign Use in Work Zones written by Gerald L. Ullman and published by . This book was released on 2005 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Advanced Notification Messages and Use of Sequential Portable Changeable Message Signs in Work Zones by :
Download or read book Advanced Notification Messages and Use of Sequential Portable Changeable Message Signs in Work Zones written by and published by . This book was released on 2005 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Guidelines for the Use of Portable Changeable Message Signs by : American Traffic Safety Services Association. Sign Committee
Download or read book Guidelines for the Use of Portable Changeable Message Signs written by American Traffic Safety Services Association. Sign Committee and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Portable Bulb-type Changeable Message Signs for Highway Work Zones by :
Download or read book Portable Bulb-type Changeable Message Signs for Highway Work Zones written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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)
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:
Book Synopsis Portable Bulb-type Changeable Message Signs for Highway Work Zones by : Institute of Transportation Engineers
Download or read book Portable Bulb-type Changeable Message Signs for Highway Work Zones written by Institute of Transportation Engineers and published by . This book was released on 1994 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analyzing Drivers' Responses to Portable Changeable Message Signs in Rural Highway Work Zones by : Yue Li
Download or read book Analyzing Drivers' Responses to Portable Changeable Message Signs in Rural Highway Work Zones written by Yue Li and published by . This book was released on 2011 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidelines on the Use and Operation of Changeable Message Signs by : Conrad L. Dudek
Download or read book Guidelines on the Use and Operation of Changeable Message Signs written by Conrad L. Dudek and published by . This book was released on 1992 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Uniform Traffic Control and Warning Messages for Portable Changeable Message Signs. Final Report by : Richard L. Knoblauch
Download or read book Uniform Traffic Control and Warning Messages for Portable Changeable Message Signs. Final Report written by Richard L. Knoblauch and published by . This book was released on 1995 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Work Zone Traffic Control Information Catalog by :
Download or read book Work Zone Traffic Control Information Catalog written by and published by . This book was released on 1992 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This booklet is intended to be a single information resource for currently available Technology Transfer (T2) products on the subjects of traffic control and safety in highway construction and maintenance zones. This booklet is of particular value to state and local highway engineers who are responsible for planning, managing, implementing and inspecting traffic control devices in work and maintenance zones, as well as to individuals who are in need of, or provide, continuing training on all aspects of work-zone traffic management. For each product listed, the address and telephone number of contact agencies are provided along with a brief description and the terms for acquisition.
Book Synopsis Uniform Traffic Control and Warning Messages for Portable Changeable Message Signs by :
Download or read book Uniform Traffic Control and Warning Messages for Portable Changeable Message Signs written by and published by . This book was released on 1995 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to develop and test word and symbol traffic control and hazard messages for portable changeable message signs (PCMSs). The messages were designed for the standard PCMS with three lines of eight characters. First, a comprehensive listing of candidate PCMS messages was developed. This was done by interviewing State highway engineers, surveying PCMS manufacturers and questioning motorists. In those situations where subjects did not express an overwhelming sign preference additional field testing was done. The detection distances of the candidate messages were determined using a PCMS under both day and night conditions.
Book Synopsis Effectiveness of Changeable Message Signs in Controlling Vehicle Speeds in Work Zones by : Nicholas J. Garber
Download or read book Effectiveness of Changeable Message Signs in Controlling Vehicle Speeds in Work Zones written by Nicholas J. Garber and published by . This book was released on 1994 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Work zone speeds have customarily been regulated by standard regulatory or advisory speed signs. However, most drivers do not slow down in response to these static speed control measures. The changeable message sign (CMS) with radar unit has dynamic capabilities which may be more effective in altering driver behavior. The radar, attached directly to the CMS, determines the actual speed of individual vehicles in the traffic stream. Upon detecting a speed higher than a preset threshold limit, the CMS can display a personalized warning message. This study evaluated the effectiveness of the CMS with radar unit in reducing work zone speeds. Four CMS messages designed to warn drivers that their speed exceeded the maximum safe speed were tested at seven work zones on two interstate highways in Virginia. Speed and volume data for the whole population traveling through the work zone were collected with automatic traffic counters. To assess the effect of CMS on high-speed drivers in particular, vehicles that triggered the radar-activated display were videotaped as they passed through the work zone. Using the data obtained from the traffic counters and videotapes, speed characteristics were determined at the beginning, middle, and end of the work zone. These characteristics were computed for the whole population and for high-speed vehicles separately. Statistical tests were then conducted using these speed characteristics to determine whether significant reductions in speed accompanied the use of CMS. Odds ratios were first calculated to compare the odds for speeding when using CMS with the odds for speeding when using the Manual on Uniform Traffic Control Devices (MUTCD) signing only. These odds ratios indicated that CMS effectively reduced the number of vehicles speeding by any amount, by 5 mph or more, and by 10 mph or more in the work zone. When analysis of variance was used to compare speeds when using the CMS with speeds when using MUTCD signing only, all of the speed characteristics average speeds, 85th percentile speeds, speed variance, and the percentage of vehicles speeding by any amount, by 5 mph or more, and by 10 mph or more were reduced with any of the four CMS messages. In some cases, these reductions were not significant at a= 0.05. The messages were rated according to their level of effectiveness in the following order: [1] YOU ARE SPEEDING SLOW DOWN, [2] HIGH SPEED SLOW DOWN, [3] REDUCE SPEED IN WORK ZONE, and [4] EXCESSIVE SPEED SLOW DOWN. Finally, t tests were conducted using the speed data obtained for the high-speed vehicles, and at a significance level of ct 0.05, all of the messages were effective in significantly reducing the average speeds of those vehicles traveling 59 mph or faster in a 55 mph work zone when compared to MUTCD signing only.
Book Synopsis Evaluation of the Driver's Ability to Recall the Message Content of Portable, Changeable Message Signs in Highway Work Zones by : P. Metaxatos
Download or read book Evaluation of the Driver's Ability to Recall the Message Content of Portable, Changeable Message Signs in Highway Work Zones written by P. Metaxatos and published by . This book was released on 2001 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
