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Author: Shauna L. Hallmark
Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 8
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Book Description
This study documents the speed reduction impacts of two dynamic, electronic school zone speed limit signs at United Community Schools between Ames and Boone, Iowa. The school facility is situated along US Highway 30, a rural four-lane divided expressway. Due to concerns about high speeds in the area, the Iowa Department of Transportation (DOT) decided to replace the original static school zone speed limit signs, which had flashing beacons during school start and dismissal times, with electronic speed signs that only display the reduced school speed limit of 55 mph during school arrival and dismissal times. The Center for Transportation Research and Education (CTRE) at Iowa State University (ISU) conducted a speed evaluation study one week before and 1 month, 7 months, and 14 or 15 months after the new signs were installed. Overall, the new dynamic school zone speed limit signs were more effective in reducing speeds than the original static signs with flashing beacons in the 1 month after period. During the 7 and 14 month after period, speeds increased slightly for the eastbound direction of traffic. However, the increases were consistent with overall speed increases that occurred independent of the signs. The dynamic, electronic signs were effective for the westbound direction of traffic for all time periods and for both start and dismissal times. Even though only modest changes in mean and 85th percentile speeds occurred, with the speed decreases, the number of vehicles exceeding the school speed limit decreased significantly, indicating the signs had a significant impact on high-end speeders.
Author: Shauna L. Hallmark
Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 8
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Book Description
This study documents the speed reduction impacts of two dynamic, electronic school zone speed limit signs at United Community Schools between Ames and Boone, Iowa. The school facility is situated along US Highway 30, a rural four-lane divided expressway. Due to concerns about high speeds in the area, the Iowa Department of Transportation (DOT) decided to replace the original static school zone speed limit signs, which had flashing beacons during school start and dismissal times, with electronic speed signs that only display the reduced school speed limit of 55 mph during school arrival and dismissal times. The Center for Transportation Research and Education (CTRE) at Iowa State University (ISU) conducted a speed evaluation study one week before and 1 month, 7 months, and 14 or 15 months after the new signs were installed. Overall, the new dynamic school zone speed limit signs were more effective in reducing speeds than the original static signs with flashing beacons in the 1 month after period. During the 7 and 14 month after period, speeds increased slightly for the eastbound direction of traffic. However, the increases were consistent with overall speed increases that occurred independent of the signs. The dynamic, electronic signs were effective for the westbound direction of traffic for all time periods and for both start and dismissal times. Even though only modest changes in mean and 85th percentile speeds occurred, with the speed decreases, the number of vehicles exceeding the school speed limit decreased significantly, indicating the signs had a significant impact on high-end speeders.
Author:
Publisher:
ISBN:
Category : Transportation
Languages : en
Pages : 54
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Book Description
Author: W. A. Leaf
Publisher:
ISBN:
Category : Pedestrian accidents
Languages : en
Pages : 72
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Book Description
Author: Disapat Lavansiri
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 312
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Book Description
Author:
Publisher: Transportation Research Board
ISBN: 9780309065023
Category : Business & Economics
Languages : en
Pages : 444
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Book Description
TRB Special Report 254 - Managing Speed: Review of Current Practices for Setting and Enforcing Speed Limits reviews practices for setting and enforcing speed limits on all types of roads and provides guidance to state and local governments on appropriate methods of setting speed limits and related enforcement strategies. Following an executive summary, the report is presented in six chapters and five appendices.
Author: Charles L. Marohn, Jr.
Publisher: John Wiley & Sons
ISBN: 1119564816
Category : Business & Economics
Languages : en
Pages : 262
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Book Description
A new way forward for sustainable quality of life in cities of all sizes Strong Towns: A Bottom-Up Revolution to Build American Prosperity is a book of forward-thinking ideas that breaks with modern wisdom to present a new vision of urban development in the United States. Presenting the foundational ideas of the Strong Towns movement he co-founded, Charles Marohn explains why cities of all sizes continue to struggle to meet their basic needs, and reveals the new paradigm that can solve this longstanding problem. Inside, you’ll learn why inducing growth and development has been the conventional response to urban financial struggles—and why it just doesn’t work. New development and high-risk investing don’t generate enough wealth to support itself, and cities continue to struggle. Read this book to find out how cities large and small can focus on bottom-up investments to minimize risk and maximize their ability to strengthen the community financially and improve citizens’ quality of life. Develop in-depth knowledge of the underlying logic behind the “traditional” search for never-ending urban growth Learn practical solutions for ameliorating financial struggles through low-risk investment and a grassroots focus Gain insights and tools that can stop the vicious cycle of budget shortfalls and unexpected downturns Become a part of the Strong Towns revolution by shifting the focus away from top-down growth toward rebuilding American prosperity Strong Towns acknowledges that there is a problem with the American approach to growth and shows community leaders a new way forward. The Strong Towns response is a revolution in how we assemble the places we live.
Author: James E. Bryden
Publisher: Transportation Research Board
ISBN: 0309067650
Category : Automobile driving at night
Languages : en
Pages : 131
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Book Description
Author: Peter M. Briglia
Publisher:
ISBN:
Category : Intelligent transportation systems
Languages : en
Pages : 116
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Book Description
This report documents the results of applying a previously developed, standardized approach for evaluating advanced traveler information systems (ATIS) projects to a much more diverse group of 16 intelligent transportation systems (ITS) projects. The evaluation approach used structured interviews to investigate technical, management and organizational lessons learned. The approach appeared to work well with this diverse group of projects. This report also includes the individual evaluation reports for the 16 ITS projects that were evaluated. Each report includes a discussion on background information, project description, ITS architecture and standards, system usage and benefits and institutional and technical issues.
Author: Dusan Teodorovic
Publisher: Routledge
ISBN: 1317630912
Category : Architecture
Languages : en
Pages : 483
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Book Description
The Routledge Handbook of Transportation offers a current and comprehensive survey of transportation planning and engineering research. It provides a step-by-step introduction to research related to traffic engineering and control, transportation planning, and performance measurement and evaluation of transportation alternatives. The Handbook of Transportation demonstrates models and methods for predicting travel and freight demand, planning future transportation networks, and developing traffic control systems. Readers will learn how to use various engineering concepts and approaches to make future transportation safer, more efficient, and more sustainable. Edited by Dušan Teodorović and featuring 29 chapters from more than 50 leading global experts, with more than 200 illustrations, the Routledge Handbook of Transportation is designed as an invaluable resource for professionals and students in transportation planning and engineering.
Author: European Conference of Ministers of Transport
Publisher: OECD Publishing
ISBN:
Category :
Languages : en
Pages : 296
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Book Description
This Report addresses the key issues surrounding traffic speed management and highlights the improvements in policy and operations needed to reduce the extent of speeding.
