The Centre for Transport Studies is pleased to welcome
Mike Smith (Emeritus Professor of Mathematics, University of York)
to lead a seminar entitled
A Splitting Rate Model of Traffic Re-routeing; with Application to the Design of Congestion-Reducing Traffic Control Systems
to be held
Wednesday 11th May 2011 – 16.00
Please join us for presentation and discussion at
Room 601, Skempton Building, Imperial College London
(Maps and travel directions: www.imperial.ac.uk/cts/html/Miscellaneous/travelDirections.asp<http://www.imperial.ac.uk/cts/html/Miscellaneous/travelDirections.asp>)
Abstract
It will be shown how a new mathematical model of traffic + control dynamics may be used to reduce congestion in cities.
A new dynamical model of day-to-day or within-day re-routeing using splitting rates at nodes or node-exit flows (rather than route flows or link flows) will be presented. The dynamical model gives rise to a sequence of link flow vectors which converges to a set of approximate Wardrop equilibria. A special dynamical signal green-time re-allocation model is added. The paper uses model network results to illustrate now the above dynamical models may be utilised to design signal timings which make the best use of limited network capacity.
About the Speaker
Mike has been working on the design of urban network control and management systems and the necessary decision support modelling (including mathematical models) for more than 30 years. The twin focus has been: (a) the development of new mathematics and the better utilisation of existing mathematics to help control and manage urban traffic congestion in the future, and (b) the discussion of these possibilities with signal control engineers and other policy-makers.
In 2007 Mike was presented with the Robert Herman Lifetime Achievement Award by the Informs (The Institute for Operations Research and the Management Sciences) Transportation Science and Logistics Society; “for fundamental and sustained contributions in transportation science and logistics”.
Imperial’s next CTS Seminar
Ms Valentina Trozzi (CTS, Imperial College London) will be leading a seminar titled “Dynamic Hyperpath Search in Congested Transit Network” on Wednesday 25 May 2011 at 16:00.
About the CTS Seminar Series
The CTS seminar series aims to facilitate discussion on current research topics in the transport field. Seminars are held jointly with our colleagues in the Centre for Transport Studies at University College London. They are usually held on Wednesday afternoons at Imperial College London or University College London. Seminars are free of charge and open to all interested parties. Booking is not required.
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CTS home: www.imperial.ac.uk/cts<http://www.imperial.ac.uk/cts>
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