Calendar of Events - Event
Event Scheduled for Oct 1, 2012
Event: Seminar in Transportation and Urban Engineering: - Recent Advances in Activity-Based Modeling: - Speaker: Professor Karthik Kondur, Civil & Environmental Engineering, UConn
Location: Castleman 201
Time: 12:00 pm
Details of Event:
Recent Advances in Activity-Based Modeling: A Network-Sensitive Transport Modeling Framework for Evaluating Impacts of Network Disruptions on Traveler Choices under Varying Levels of User Information Provision - There is considerable interest in the application of active traffic demand management (ATDM) and traveler information systems strategies to mitigate the adverse impacts of congestion and network disruptions. Such strategies and user information provision systems not only impact network performance through the modification of traveler route choices, but also through changes in the entire range of activity-travel choices such as activity generation, destination choice, mode choice, and time of day choice. The simulation of the impacts of alternative strategies on network performance therefore calls for the development and application of integrated modeling frameworks capable of reflecting the entire slate of activity-travel pattern adjustments that may occur in response to changes in network conditions and user information provision. This research describes an integrated modeling framework wherein an activity-based travel demand model and a dynamic traffic assignment model are tightly coupled together with continuous information exchange between the models along the continuous time axis. The framework is enhanced to accommodate the possible impacts of alternative user information provision strategies on traveler choices and applied to a subregion in the Greater Phoenix metropolitan area to demonstrate the sensitivity of the model to network disruptions under alternative information provision scenarios. Model results are consistent with expectations and show that impacts of network disruption are substantially mitigated in the presence of traveler information systems. Further, the model results show that workers – who have more rigid work schedules and locations – are more greatly impacted by network disruptions than non-workers who do not have such constraints. Integrated modeling tools such as that described in this research offer promise for evaluating emerging operational and policy strategies aimed at influencing traveler choices.
BIO: Dr. Karthik Charan Konduri is an Assistant Professor in the Department of Civil and Environmental Engineering at the University of Connecticut. He received his B.Tech. in Civil Engineering from the Institute of Technology at Banaras Hindu University, India, his M.S. in Civil Engineering from the University of Kentucky, and his Ph.D. in Civil Engineering from Arizona State University. His research interests include activity-based travel behavior and time use analysis, integrated models of land-use and transport, travel demand modeling and forecasting, transportation planning and policy analysis, econometric and statistical modeling methodologies, and transportation safety. His research work has been published in peer-reviewed journals and presented at various national and international conferences. He was awarded the 2012 Pyke Johnson Award for the best paper in the field of transportation systems planning and administration by the Transportation Research Board. He has led the design and development of various transportation planning software including, PopGen – an open-source synthetic population generator, and OpenAMOS – an open-source activity-based travel demand model simulator. Dr. Konduri is also an active member of the Transportation Research Board, Institute of Transportation Engineers, International Association of Travel Behaviour Research, and World Conference on Transport Research Society.
Sponsored By: Civil and Environmental Engineering
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