Federally Coordinated Program of Highway Research, Development and Technology

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ISBN 13 :
Total Pages : 838 pages
Book Rating : 4.3/5 (555 download)

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Download or read book Federally Coordinated Program of Highway Research, Development and Technology written by and published by . This book was released on 1983 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Federally Coordinated Program of Highway Research, Development, and Technology. Annual Progress Report. Fiscal Year 1985

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ISBN 13 :
Total Pages : 704 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Federally Coordinated Program of Highway Research, Development, and Technology. Annual Progress Report. Fiscal Year 1985 by :

Download or read book Federally Coordinated Program of Highway Research, Development, and Technology. Annual Progress Report. Fiscal Year 1985 written by and published by . This book was released on 1986 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Effectiveness of Changeable Message Signs in Controlling Vehicle Speeds in Work Zones

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ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.3/5 (91 download)

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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.

Highway Safety Literature

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ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Highway Safety Literature by :

Download or read book Highway Safety Literature written by and published by . This book was released on 1982 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Federally Coordinated Program of Highway Research and Development

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ISBN 13 :
Total Pages : 516 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Federally Coordinated Program of Highway Research and Development by : United States. Federal Highway Administration

Download or read book Federally Coordinated Program of Highway Research and Development written by United States. Federal Highway Administration and published by . This book was released on with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Policies for Use of Changeable Message Signs in Highway Work Zones

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ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.:/5 (31 download)

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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.

Federally Coordinated Program of Research and Development in Highway Transportation

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ISBN 13 :
Total Pages : 688 pages
Book Rating : 4.3/5 (555 download)

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Book Synopsis Federally Coordinated Program of Research and Development in Highway Transportation by :

Download or read book Federally Coordinated Program of Research and Development in Highway Transportation written by and published by . This book was released on 1982 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advanced Notification Messages and Use of Sequential Portable Changeable Message Signs in Work Zones

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ISBN 13 :
Total Pages : 90 pages
Book Rating : 4.3/5 (555 download)

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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.

Traffic Engineering Handbook

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Publisher : John Wiley & Sons
ISBN 13 : 1118762266
Total Pages : 688 pages
Book Rating : 4.1/5 (187 download)

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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 2016-01-19 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 moreā€”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.

Freeway Construction Zones in Illinois

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ISBN 13 :
Total Pages : 158 pages
Book Rating : 4.:/5 (31 download)

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Download or read book Freeway Construction Zones in Illinois written by and published by . This book was released on 1990 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Study of Accident Experience in Construction and Maintenance Zones

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ISBN 13 :
Total Pages : 198 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis A Study of Accident Experience in Construction and Maintenance Zones by : Zoltan Anthony Nemeth

Download or read book A Study of Accident Experience in Construction and Maintenance Zones written by Zoltan Anthony Nemeth and published by . This book was released on 1990 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to identify means by which improved traffic control can improve traffic safety at work zones. The accident data base was derived from the coded information stored in the computerized data bank of the Ohio Department of Highway Safety. Coding errors and unreported accidents were recognized as limitations of the data base. Statistical analysis of statewide aggregate data failed to identify cause and effect relationships between accident characteristics and traffic control. The study was expanded to include the review of individual accident reports at nine construction sites. This approach proved very effective. The accident reports which always included a sketch and a description of the event often indicated that specific traffic control procedures and standards needed to be improved. It has become clear to the researchers that certain types of accidents at a given work zone can suggest specific problems with traffic control plans and/or with the implementation of the plans. Monitoring work zone accidents as they happen is of course the best way to recognize and eliminate problems.

Human Factors Guidelines for Road Systems

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Publisher : Transportation Research Board National Research
ISBN 13 : 9780309258166
Total Pages : 348 pages
Book Rating : 4.2/5 (581 download)

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Book Synopsis Human Factors Guidelines for Road Systems by : John L. Campbell

Download or read book Human Factors Guidelines for Road Systems written by John L. Campbell and published by Transportation Research Board National Research. This book was released on 2012 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report completes and updates the first edition of NCHRP Report 600: Human Factors Guidelines for Road Systems (HFG), which was published previously in three collections. The HFG contains guidelines that provide human factors principles and findings for consideration by, and is a resource document for, highway designers, traffic engineers, and other safety practitioners."--Foreword.

Summary of Progress - National Cooperative Highway Research Program

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ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Summary of Progress - National Cooperative Highway Research Program by : National Cooperative Highway Research Program

Download or read book Summary of Progress - National Cooperative Highway Research Program written by National Cooperative Highway Research Program and published by . This book was released on 2000 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Progress Report

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ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.3/5 (555 download)

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Book Synopsis Progress Report by : National Cooperative Highway Research Program

Download or read book Progress Report written by National Cooperative Highway Research Program and published by . This book was released on 2002 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Freeway Management Handbook

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ISBN 13 :
Total Pages : 632 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Freeway Management Handbook by : James D. Carvell

Download or read book Freeway Management Handbook written by James D. Carvell and published by . This book was released on 1997 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is an update of the 1983 edition and reflects the tremendous developments in computing and communications technology. It also reflects the importance of "Integrated" Transportation Management Systems and the development of the concept of Intelligent Transportation Systems (ITS). The handbook development began with a survey of current practice, including site visits and interviews, of ten Freeway Management Systems throughout the country. It was developed under the advice of a panel of freeway management practitioners. The 1997 edition is organized in modular fashion with each module addressing a particular aspect or technology of the freeway management task. The modules are stand-alone treatments of particular areas of freeway management but are cross-referenced to reflect their interdependence

Transportation Quarterly

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ISBN 13 :
Total Pages : 652 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Transportation Quarterly by :

Download or read book Transportation Quarterly written by and published by . This book was released on 2001 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:

SRIM Index

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ISBN 13 :
Total Pages : 172 pages
Book Rating : 4.:/5 (5 download)

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Book Synopsis SRIM Index by :

Download or read book SRIM Index written by and published by . This book was released on 1982 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: