Filters








70,143 Hits in 6.1 sec

Comparison of traffic assignment in VISUM and transport simulation in MATSim

Bartłomiej PIĄTKOWSKI, Michał MACIEJEWSKI
2013 Transport Problems  
In VISUM the static assignment algorithm resulted in increased traffic flow on links located near to the connectors, while the dynamic one assigned traffic more uniformly, matching the MATSim's results  ...  The equilibrium and the dynamic stochastic assignment algorithms were used in VISUM while in MATSim a multi-agent approach was used for planning and a queue-based flow model for simulation.  ...  MATSim MATSim [3, 6] is an agent-based system for transport simulation with the primary focus on transport planning.  ... 
doaj:f2d1e3e5cf3c419eaaf5cda3397c9041 fatcat:ut22kgxpojhode37nmv7ldxv5y

Combined dynamic traffic assignment and urban traffic control models

Evangelos Mitsakis, Josep Maria Salanova, George Giannopoulos
2011 Procedia - Social and Behavioral Sciences  
Urban traffic control systems evolved through three generations. The first generation of such systems has been based on historical traffic data.  ...  In addition, a generic and easily transferable scheme, in the form of a methodological framework for the Combined Dynamic Traffic Assignment and Urban Traffic Control problem is presented and applied on  ...  In addition, the authors would like to thank the Hellenic Institute of Transport, Centre for Research and Technology Hellas, for providing the data sets and computational tools mentioned and used in the  ... 
doi:10.1016/j.sbspro.2011.08.049 fatcat:ms6bqr2sg5apliuwoohheaupyu

Special issue on dynamic models serving real-time urban transport operations

Domokos Esztergár-Kiss, Gudio Gentile, Agostino Nuzzolo
2020 Transportmetrica A: Transport Science  
If we consider a wider context, traffic control methods could be also used on highways, where different traffic dynamics have to be applied.  ...  Thus, variable speed limit systems can be used to improve traffic conditions by adjusting the speed limits based on the current traffic situation.  ... 
doi:10.1080/23249935.2019.1692964 fatcat:65tgaom7ubexjg4dcw3ochs35q

Cyber-Physical Integration to Connect Vehicles for Transformed Transportation Safety and Efficiency [chapter]

Daiheng Ni, Hong Liu, Wei Ding, Yuanchang Xie, Honggang Wang, Hossein Pishro-Nik, Qian Yu
2012 Lecture Notes in Computer Science  
In this paper, we explore a distributed cyber-physical solution using connected vehicle technology (CVtech) to substantially mitigate transportation systems' safety and efficiency problems.  ...  and Tools by designing alternative architectures, modeling a unified online system of cyber and physical elements.  ...  dynamics of a connected vehicle paradigm, see Figure 1.  ... 
doi:10.1007/978-3-642-31087-4_10 fatcat:gypx47yqarh55oruh34gcyyjx4

Route Planning Based On Urban Mobility Management

Tamás Mátrai, János Tóth, Márton Tamás Horváth
2016 Hungarian Journal of Industry and Chemistry  
Mobility management centres play a significant role in urban transport, taking into account several factors that have an effect on the flow of vehicles.  ...  A route guidance methodology is described that combines current transportation demands with the results of the traditional four-step model.  ...  The authors are grateful for the comments from colleagues at the BME Department of Transport Technology and Economics.  ... 
doi:10.1515/hjic-2016-0008 fatcat:2l467q7wbrgyljrrya6x3wxmyu

ON THE STABILITY OF USER EQUILIBRIA IN STATIC TRANSPORTATION NETWORKS

Wen-Long Jin
2008 Transportmetrica  
In this paper, with a simple deterministic dynamical system model of the traffic assignment problem, we first develop a systematic approach to analyzing asymptotic stability and instability of user equilibria  ...  The stability of a user equilibrium determines whether it could be realized or sustained in a transportation network, when subject to perturbations in traffic conditions and drivers' route choice behaviors  ...  We also thank two anonymous reviewers for their helpful comments on the original manuscript.  ... 
doi:10.1080/18128600808685677 fatcat:cma22uapjffobdaddshuvdlfoy

A dynamical system model of the traffic assignment problem

Wen-Long Jin
2007 Transportation Research Part B: Methodological  
We then present an Euler-based perturbation method for finding user equilibrium and solve two examples for both static and dynamic traffic assignment problems.  ...  In this paper, based on a definition of O-D First-In-First-Out violation, we propose a new dynamical system model of the route choice behavior at the aggregate, route level for both static and dynamic  ...  Jayakrishnan for some intriguing discussions on the traffic assignment problem. I would like to appreciate Prof. Will Recker for providing me a friendly research environment.  ... 
doi:10.1016/j.trb.2006.02.010 fatcat:52dujexmhrfe7birwc6nztuf3y

A Method on Multimedia Service Traffic Monitoring and Analysis [chapter]

Hun-Jeong Kang, Myung-Sup Kim, James Won-Ki Hong
2003 Lecture Notes in Computer Science  
This paper presents a method for monitoring and analyzing multimedia service traffic. Our method detects transport protocol and port numbers for dynamically created sessions during a control session.  ...  We also present a system architecture that uses our method to monitor and analyze multimedia service traffic.  ...  Conclusion and Future Work In this paper, we presented a method and system architecture for monitoring and analyzing multimedia service traffic.  ... 
doi:10.1007/978-3-540-39671-0_9 fatcat:m6rcj7zmcjf6lpxcahbvye4ad4

How realistic is static traffic assignment? Analyzing automatic number-plate recognition data and image processing of real-time traffic maps for investigation

Hamid Mirzahossein, Iman Gholampour, Maryam Sedghi, Lei Zhu
2021 Transportation Research Interdisciplinary Perspectives  
The obtained matrix was assigned to the CCZ transportation network by the convex combination method concerning user equilibrium (UE) condition.  ...  The present study takes a novel step toward urban traffic analysis using data mining of processed images of real-time traffic maps as a location-based data model, in which the data were analyzed by software  ...  Convex combination assignment This section's general approach is formulating and solving UE as a mathematical problem based on the convex combination method.  ... 
doi:10.1016/j.trip.2021.100320 fatcat:4xcgututvnhxpcosyrodunbabm

A social-network-enabled green transportation system

Wei Shu, Guohui Zhang, Min-You Wu, Jia-Liang Lu
2013 2013 International Conference on Connected Vehicles and Expo (ICCVE)  
We focus on the new models of urban transportation system based on green-energy vehicles.  ...  The main goal is to design and demonstrate a prototype of social network enabled transportation system which enables communication between electrical vehicles, monitoring, information gathering, assistant  ...  Scenario-driven traffic operations are simulated to provide a prediction of arrival time with the best routing and enable optimal vehicle assignment, subject to change with dynamic traffic information.  ... 
doi:10.1109/iccve.2013.6799830 dblp:conf/iccve/ShuZWL13 fatcat:yne6sw6qwngmjncy6c3n2yndbm

Global Optimization of Emergency Evacuation Assignments

Lee D. Han, Fang Yuan, Shih-Miao Chin, Holing Hwang
2006 Interfaces  
Based on the one-destination evacuation concept, we can obtain the optimal destination and route assignment by solving a one-destination traffic-assignment problem on a modified network representation.  ...  We present a framework for the simultaneous optimization of evacuation-traffic distribution and assignment.  ...  Even with the implementation of dynamic-traffic assignment, a technique that considers changing traffic conditions to find the best evacuation routes, models that are based on fixed origin-destination  ... 
doi:10.1287/inte.1060.0251 fatcat:4cmrbr5grvhxtgxij3qudxyyf4

Functional Modelling of the Air Traffic Control and the Integration Perspectives of the Integrated Services

Zsolt Sándor
2017 Periodica Polytechnica Transportation Engineering  
These data are provided by the industry partners on mandatory base, in their own interest, in good quality.  ...  Air traffic control has a specific position, because it needs a significant amount of data in order to fulfil its tasks and its complex processes require close cooperation between the organizational units  ...  Based on the services and within them based on the duties, the functions to be fulfilled by the services were identified. In this way, the functions were assigned to the services.  ... 
doi:10.3311/pptr.9270 fatcat:e47tztjrofaellepa3qu3avsju

A Study on Application of Stochastic Queuing Models for Control of Congestion and Crowding

Rachna Rathore
2022 International Journal for Global Academic & Scientific Research  
This article provides an overview of current time's traffic and crowd management system through a review of literature on stochastic queuing models for congestion and congestion control.  ...  From a traffic management perspective, traffic congestion leads to more expenses in the traffic system for handling inconvenient road networks.  ...  Cats et al. (2016) [3] used a dynamic and stochastic transit assignment framework to create a method for assessing the effects of increasing load.  ... 
doi:10.55938/ijgasr.v1i1.6 fatcat:gdtemwvbqzestpqy4kjwsew62a

Streaming Media and Multimedia Conferencing Traffic Analysis Using Payload Examination

Hun-Jeong Kang, Myung-Sup Kim, James W. Hong
2004 ETRI Journal  
Our method is based on detecting the transport protocol and port numbers that are dynamically assigned during the setup between communicating parties.  ...  We also describe a prototype implementation of a traffic monitoring and analysis system that uses our method and architecture.  ...  If so, it assumes that the flow corresponds to a dynamic session. This method is adopted by Flowscan [13] , a flow-based traffic analysis system.  ... 
doi:10.4218/etrij.04.0103.0052 fatcat:xnqbc2lepfh6fa3v7x6ndeq33q

A Review of Dynamic Traffic Assignment Computer Packages

Mansoureh Jeihani
2010 Journal of the Transportation Research Forum  
It describes demand estimation, supply presentation, methods for computing dynamic user equilibria, and convergence among these packages with a concentration on TRANSIMS.  ...  Although TRANSIMS addresses some of the existing problems in dynamic traffic assignment models, more studies on it and improvements in it are still needed.  ...  VISSIM supports three assignment methods: fixed routes, dynamic routes, and dynamic traffic assignment.  ... 
doi:10.5399/osu/jtrf.46.2.1021 fatcat:j6nix2lng5eftipicrhtc5ca2m
« Previous Showing results 1 — 15 out of 70,143 results