Application Of Microscopic Simulation To Evaluate The Safety Performance Of Freeway Weaving Sections
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Application Of Microscopic Simulation To Evaluate The Safety Performance Of Freeway Weaving Sections
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Author : Thanh Quang Le
language : en
Publisher:
Release Date : 2011
Application Of Microscopic Simulation To Evaluate The Safety Performance Of Freeway Weaving Sections written by Thanh Quang Le 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.
This study adopted the traffic conflict technique, investigated and applied it for evaluation of freeway weaving section safety performance. Conflicts between vehicles were identified based on the state of interactions between vehicles in the traffic stream at microscopic level. The VISSIM microscopic simulation model was employed to simulate traffic operation. Surrogate safety measures were formulated based on deceleration rate required to avoid crash and these simulation-based measures were statistically compared and validated using crash data collected from the same study site. Three study sites located in Houston and Dallas areas were selected. Geometric and traffic data were collected using various technique including the use of traffic surveillance cameras and pneumatic tubes. The study revealed the existence of links between actually observed crashes and the surrogate safety measures. The study findings support the possible the use of microscopic simulation to evaluate safety performance of weaving areas and other transportation facilities.
Weavsim
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Author : Mohsen Zarean
language : en
Publisher:
Release Date : 1988
Weavsim written by Mohsen Zarean and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Traffic flow categories.
Microscopic Simulation Of Lane Changing Behaviour At Freeway Weaving Sections
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Author : A. F. Al-Kaisy
language : en
Publisher:
Release Date : 1999
Microscopic Simulation Of Lane Changing Behaviour At Freeway Weaving Sections written by A. F. Al-Kaisy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Modeling Safety And Traffic Operations At Freeway Weaving Sections
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Author : Joseph Fazio
language : en
Publisher:
Release Date : 1990
Modeling Safety And Traffic Operations At Freeway Weaving Sections written by Joseph Fazio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
The Application Of Simulation To Evaluate The Operation Of Major Freeway Weaving Sections
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Author : Alexander Skabardonis
language : en
Publisher:
Release Date : 1989
The Application Of Simulation To Evaluate The Operation Of Major Freeway Weaving Sections written by Alexander Skabardonis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.
Safety Performance For Freeway Weaving Segments
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Author : Yi Qi
language : en
Publisher:
Release Date : 2014
Safety Performance For Freeway Weaving Segments written by Yi Qi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Ramp-freeway junctions categories.
Analytical Procedures For Estimating Capacity Of Freeway Weaving Merge And Diverge Sections
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Author : Hesham Rakha
language : en
Publisher:
Release Date : 2006
Analytical Procedures For Estimating Capacity Of Freeway Weaving Merge And Diverge Sections written by Hesham Rakha and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Express highways categories.
Speed Management
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Author : European Conference of Ministers of Transport
language : en
Publisher: OECD Publishing
Release Date : 2006-10-13
Speed Management written by European Conference of Ministers of Transport and has been published by OECD Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-10-13 with categories.
Speeding is the number one road safety problem in a large number of OECD/ECMT countries. It is responsible for around one third of the current, unacceptably high levels of road fatalities. Speeding has an impact not only on accidents but also on the ...
Assessing Safety Performance Of Transportation Systems Using Microscopic Simulation
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Author : Flávio José Craveiro Cunto
language : en
Publisher:
Release Date : 2008
Assessing Safety Performance Of Transportation Systems Using Microscopic Simulation written by Flávio José Craveiro Cunto and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Transportation safety has been recognized as a public health issue worldwide, consequently, transportation researchers and practitioners have been attempting to provide adequate safety performance for the various transportation components and facilities to all road users given the usually scarce resources available. Safety engineers have been trying to make decisions affecting safety based on the knowledge extracted from different types of statistical models and/or observational before-after analysis. It is generally recognized that this type of factual knowledge is not easily obtained either statistically or empirically. Despite the intuitive link between road safety and observed crashes, a good understanding of the sequence of events prior to the crash can provide a more rational basis for the development of engineering countermeasures. The development of more comprehensive mechanistic models for safety assessment is heavily dependent on detailed vehicle tracking data that is not readily available. The potential of microscopic simulation in traffic safety and traffic conflict analysis has gained increasing interest mostly due to recent developments in human behaviour modelling and real-time vehicle data acquisition. In this thesis, we present a systematic investigation of the use of existing behavioural microscopic simulation models in short-term road safety studies.
Microscopic Safety Evaluation And Prediction For Special Expressway Facilities
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Author : Ling Wang
language : en
Publisher:
Release Date : 2016
Microscopic Safety Evaluation And Prediction For Special Expressway Facilities written by Ling Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Meanwhile, in case of correlation among observations in the same segment, a multilevel modeling structure has been implemented. Furthermore, a data mining technique--Support Vector Machine (SVM)--is used to distinguish crash from non-crash observations. Once the crash mechanisms for special expressway facilities are found, we are able to provide valuable information on how to manage roadway facilities to improve the traffic safety of special facilities. This study adopts Active Traffic Management (ATM) strategies, including Ramp Metering (RM) and Variable Speed Limit (VSL), in order to enhance the safety of a congested weaving segment. RM regulates the entering vehicle volume by adjusts metering rate, and VSL is able to provide smoother mainline traffic by changing the mainline speed limits. The ATM strategies are carried out in microscopic simulation VISSIM through the Component Object Model (COM) interface. The results shows that the crash risk and conflict count of the studies weaving segment have been significantly reduced because of ATM. Furthermore, the mechanisms of traffic conflicts, a surrogate safety measurement, are explored for weaving segments using microscopic simulation. The weaving segment conflict prediction model is compared with its crash prediction model. The results show that there are similarity and differences between conflict and crash mechanisms. Finally, potential relevant applications beyond the scope of this research but worth investigation in the future are also discussed in this dissertation.