Speed Zoning Methodology
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Speed Zoning Methodology
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Author : Northwestern University (Evanston, Ill.). Traffic Institute
language : en
Publisher:
Release Date : 1970
Speed Zoning Methodology written by Northwestern University (Evanston, Ill.). Traffic Institute and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.
Practical Methods Of Speed Zoning
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Author : F. L. Orcutt (Jr)
language : en
Publisher:
Release Date : 1975
Practical Methods Of Speed Zoning written by F. L. Orcutt (Jr) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with categories.
Update To Methodology For Setting Speed Limits In Urban Areas
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Author : Miguel A. Figliozzi
language : en
Publisher:
Release Date : 2021
Update To Methodology For Setting Speed Limits In Urban Areas written by Miguel A. Figliozzi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with City traffic categories.
Many cities in Oregon are requesting a comprehensive review of speed zoning guidelines and existing procedures for streets with high volumes of active travelers. The main goal of this research is to develop recommendations for alternate criteria for setting speed zones on roadways with a high percentage of active travelers. Literature pertaining to factors affecting operating speed, speed and safety, speed management, and current speed zone practices is reviewed. The selection of the site and performance criteria is discussed. Qualities and characteristics of the speed data utilized are given. Distinctions between neighborhood and non-neighborhood greenways are noted. A before and after analysis of speeds and hypothesis testing are performed. Factors affecting operating speeds are identified by linear correlation and regression analysis. The study finds a high degree of variability in the outcomes of Posted Speed limit (PSL) changes. However, PSL reductions are more likely to reduce speeds on neighborhood greenways, and motorized traffic volume and presence of a bike lane are key variables for predicting mean speeds.
Synthesis Of Speed Zoning Practices Technical Report
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Author : M. R. Parker (Jr)
language : en
Publisher:
Release Date : 1985
Synthesis Of Speed Zoning Practices Technical Report written by M. R. Parker (Jr) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.
Evaluation And Summary Of Studies In Speed Control Methods In Work Zones
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Author : R. F. Benekohal
language : en
Publisher:
Release Date : 1992
Evaluation And Summary Of Studies In Speed Control Methods In Work Zones written by R. F. Benekohal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Roads categories.
This report summarizes and evaluates the important findings from the literature review of the studies on work zone speed control techniques. The following treatments are included in this report: 1) flagging, 2) lane width reduction, 3) law enforcement, 4) changeable message signs (CMS), 5) rumble strips, and 6) flashing beacons. The effects of the speed control treatments on speed and traffic flow are evaluated based on: A) experiences with treatment, B) effects of treatment on speed, C) effectiveness of treatment, and D) comments about treatment. A brief description of the conditions under which the treatments were applied is provided, and the speed reduction effects of each technique are discussed. A reference matrix was prepared to identify publications related to each type of speed reduction treatment used in work zones.
Speed Control Through Work Zones
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Author :
language : en
Publisher:
Release Date : 1987
Speed Control Through 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 1987 with Roads categories.
This report presents the implementation and evaluation of four techniques for improving the effectiveness of speed zoning in construction areas on multi-lane freeways. The techniques are (a) the flagging procedure of the "Manual on Uniform Traffic Control Devices" (MUTCD), (b) the use of the MUTCD flagging procedure as well as motioning motorists to slow and pointing at a nearby speed limit sign with the free hand of the flagger, (c) a marked police car with cruiser lights and radar active, and (d) a uniformed police officer standing to control traffic. Each of the techniques were applied continuously on six-lane freeways for a period of 10-15 days.
A Comprehensive Literature Review Detailing The Methods For Setting Speed Limits In Urban Areas Literature Review
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Author : Miguel A. Figliozzi
language : en
Publisher:
Release Date : 2021
A Comprehensive Literature Review Detailing The Methods For Setting Speed Limits In Urban Areas Literature Review written by Miguel A. Figliozzi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Speed zoning (Traffic engineering) categories.
Many cities in Oregon are requesting a comprehensive review of speed zoning guidelines and existing procedures for streets with high volumes of active travelers. Cities are proposing alternative speed zoning guidelines that are starkly different from existing guidelines based on the 85th percentile speed distribution. The alternative guidelines and criteria for setting speed zones have not been thoroughly studied or evaluated yet. This report presents a comprehensive review of literature pertaining to factors which may influence operating speeds, speed limits compliance, and relationships between speed and crash frequency and/or severity. The focus is on urban areas and roadways with a high percentage of active users. This review is intended to support research and policy analysis that examine alternate criteria for setting speed zones on roadways with a high percentage of active travelers.
Speed Reduction Techniques For Rural High To Low Speed Transitions
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Author : Gerry John Forbes
language : en
Publisher: Transportation Research Board
Release Date : 2011
Speed Reduction Techniques For Rural High To Low Speed Transitions written by Gerry John Forbes 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 2011 with Rural roads categories.
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 412: Speed Reduction Techniques for Rural High-to-Low Speed Transitions explores techniques for lowering traffic speeds in rural transition zones. Transition zones are those portions of high-speed roads that have lower posted speed limits as the roadway approaches a settlement.
Speed Zone Guidelines Using Roadway Characteristics And Area Development
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Author : Robert W. Stokes
language : en
Publisher:
Release Date : 1999
Speed Zone Guidelines Using Roadway Characteristics And Area Development written by Robert W. Stokes and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Neural networks (Computer science). categories.
The objective of this study was to quantify effects that selected characteristics and adjacent development patterns have on roadway speeds. Based on the results of a literature search and the availability of data for Kansas highways, twenty-seven variables were identified as possibly affecting speeds on rural state highways and thirty-two variables were identified as possibly affecting speeds on urban state highways. Speed data and data for the potential explanatory variables were collected for a total of 539 sections of state highway (186 rural and 353 urban sections). Two approaches were used to develop and test models to predict speeds on rural and urban state highways based on roadway characteristics and adjacent development patterns. The first approach was based on models in the form of multiple linear regression equations. The second approach employed artificial neural networks (ANNs) to predict highway speeds. None of the regression models were entirely satisfactory in terms of their ability to predict the 85th percentile speeds on rural and urban highways within +/-5 mph (+/-8 km/h). A number of regression models are presented, however, they should be used with caution. Two independent databases were used to train two sets of ANN models of rural and urban speeds. The first set of ANN models (Stage 1) was developed using the same data used in the regression analysis. The second set of ANN models (Stage 2) was developed using a database provided by the Kansas Department of Transportation (KDOT) Bureau of Traffic Engineering. The second database contained only those variables that KDOT believed drivers consider in selecting a driving speed. Overall, the Stage 2 ANN models developed in this study were found to perform much better than either the Stage 1 ANN models or the regression models in predicting rural and urban highway speeds.
Evaluation Of Ohio Work Zone Speed Zones Process
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Author : Melisa Dayle Finley
language : en
Publisher:
Release Date : 2014
Evaluation Of Ohio Work Zone Speed Zones Process written by Melisa Dayle Finley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Road work zones categories.
This report describes the methodology and results of analyses performed to determine the effectiveness of Ohio Department of Transportation processes for establishing work zone speed zones. Researchers observed motorists' speed choice upstream of and adjacent to various work zone conditions used to justify reduced speed limits in work zones. Researchers also observed speed choice upstream and within variable work zone speed zones. Based on previous research and the results of the studies documented herein, researchers made recommendations regarding appropriate speed limit reductions for shoulder activity, lane shifts, lane closures, and median crossovers. Researchers also recommended the expanded use of variable work zone speed zones.