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A hierarchical control approach for large-scale traffic networks

As cities around the world grow rapidly and more people through different modes compete for limited urban road infrastructure to travel, it is important to this space can be manage this space to improve accessibility for travelers. This research targets to operate traffic in future cities in a holistic way that was not possible until now. It tackles the problem of modeling and optimization in large-scale congested traffic networks with an aggregated realistic representation of traffic dynamics and route choice and multiple modes of transport. Mobility advances through the integration of big data, the understanding of multimodal patterns, the coordination and optimization of urban efficiency and sustainability for the travel of people and goods. This is challenging because cities are highly complex systems. This seminar will describe methodologies to model and understand the collective behavior for different types of urban systems. It will highlight under what physical properties the aggregated laws will provide reasonable description of congestion for single- and multi-modal systems. Ultimately, the goal is to develop optimization tools and investigate what type of real-time active traffic management schemes (congestion pricing, vehicle restriction, large scale traffic signal control) can improve mobility measures in a city for cities of different structures. We build a hierarchical feedback control network of multiple levels. The validation of the modeling methodologies and the traffic management schemes are conducted in various and complex city structures scenarios using data from field experiments and micro-simulations.

Type of Seminar:
Optimization and Applications Seminar
Prof. Nikolas Geroliminis
Urban Transport Systems Laboratory, EPFL
Nov 24, 2014   16:30

HG G 19.2 (Please note change of room)
Contact Person:

Prof. John Lygeros
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Biographical Sketch:
Prof. Nikolas Geroliminis is an Assistant Professor at EPFL and the head of the Urban Transport Systems Laboratory (LUTS). Before joining EPFL he was an Assistant Professor on the faculty of the Department of Civil Engineering at the University of Minnesota. He has a diploma in Civil Engineering from the National Technical University of Athens (NTUA) and a MSc and Ph.D. in civil engineering from University of California, Berkeley .He is a member of the Transportation Research Board's Traffic Flow Theory Committee. He also serves in the editorial board of Transportation Research, part B, part C, Journal of ITS and of many international conferences. His research interests focus primarily on urban transportation systems, traffic flow theory and control, public transportation and logistics, Optimization and Large Scale Networks. He is a recent recipient of the ERC Starting Grant “METAFERW: Modeling and controlling traffic congestion and propagation in large-scale urban multimodal networks”