An Analysis Of Cms Impact On Incident Based Congestion
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An Analysis Of Cms Impact On Incident Based Congestion
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Author : In-Kyu Lim
language : en
Publisher:
Release Date : 2005
An Analysis Of Cms Impact On Incident Based Congestion written by In-Kyu Lim and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Express highways categories.
An Analysis Of The Impact Of An Incident Management System On Secondary Incidents On Freeways
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Author : Lima Kopitch
language : en
Publisher:
Release Date : 2011
An Analysis Of The Impact Of An Incident Management System On Secondary Incidents On Freeways written by Lima Kopitch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Accidents are the largest source of external costs related to transportation in the United States with annual costs estimated to exceed $200 billion per year. Incidents also create traffic backups and delays that can result in secondary incidents (i.e., collisions that occur as a result of other incidents). Although incident management has received a lot of attention from academics and practitioners alike, secondary incidents have so far been somewhat neglected. The main purpose of this dissertation is to investigate empirically whether the implementation of changeable message signs (CMS), which are one Intelligent Transportation System tool, can reduce secondary collisions. After reviewing previously published methods for estimating secondary accidents, I implement a Binary Speed Contour Map approach to detect secondary incidents using PeMS data. I also estimate the extra time lost to congestion because of incidents. My study area is a portion of Interstate 5 that stretches 55 miles from the Mexico-US border to Northern San Diego County, CA. This freeway portion has an average annualized daily traffic volume of 230,000 vehicles. My unique dataset includes incident data for 2008 combined with detailed weather data, elements of freeway geometry, and information about CMS usage. I identify a total of 9,003 incidents in my study area in 2008. Using the BSCM approach, I find that 3.7 percent of collisions were secondary incidents. Moreover, my statistical model shows that incidents occurring during evening peak hours on Fridays or during midday on weekends are more likely to result in secondary crashes as do incidents with injuries or fatalities, incidents that involve more vehicles or trucks, or incidents that take place when the pavement is wet. Conversely, secondary crashes are less likely to occur in areas with a complex geometry (perhaps because drivers are more cautious there) or for incidents taking place on the side of the freeway. More importantly, changeable message signs (CMS) decrease the occurrence of secondary crashes. The maximum effectiveness of a CMS is approximately 11.75 miles for a range of 23.6 miles. Finally, annual incident-related congestion is approximately 1.9 hours per freeway vehicle, which represents five percent of the 37 hours of annual traffic delay experienced by the average San Diego motorist.
Development Of Freeway Incident Based Congestion Measures
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Author : Mohammed A. Saif
language : en
Publisher:
Release Date : 1998
Development Of Freeway Incident Based Congestion Measures written by Mohammed A. Saif and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Traffic congestion categories.
Developing Effective Congestion Management Systems
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Author :
language : en
Publisher:
Release Date : 1995
Developing Effective Congestion Management Systems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Traffic congestion categories.
Includes traffic congestion management case studies for Albany, N.Y., Washington, D.C., Dallas-Fort Worth, Tex. and Seattle, Wash.
Congestion Management Systems
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Author :
language : en
Publisher:
Release Date : 1994
Congestion Management Systems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Traffic congestion categories.
Of congestion management system activities in states and metropolitan planning organizations -- Analytical procedures to support a congestion management review.
U S 202 Section Es1 Improvements Project Delaware And Chester Counties
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Author :
language : en
Publisher:
Release Date : 2004
U S 202 Section Es1 Improvements Project Delaware And Chester Counties written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
Incident Management
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Author : Patrick T. McCoy
language : en
Publisher:
Release Date : 1999
Incident Management written by Patrick T. McCoy 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.
U S Route 202 Section 700 Montgomery And Buck Counties
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Author :
language : en
Publisher:
Release Date : 1997
U S Route 202 Section 700 Montgomery And Buck Counties written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
Congestion Management System For Hampton Roads Virginia
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Author :
language : en
Publisher:
Release Date : 1995
Congestion Management System For Hampton Roads Virginia written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Traffic congestion categories.
Enhanced Planning Review Of The New York City Metropolitan Area
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Author : John A. Volpe National Transportation Systems Center (U.S.)
language : en
Publisher:
Release Date : 1996
Enhanced Planning Review Of The New York City Metropolitan Area written by John A. Volpe National Transportation Systems Center (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Transportation categories.