IGM Colloquium: Optimal Traffic Control

© 2017 EPFL / Carlos Canudas-de-Wit

© 2017 EPFL / Carlos Canudas-de-Wit

Optimal Traffic Control: eco-driving, green waves, and traffic light

This lecture is devoted to a large public and concerns traffic control problems in urban areas.

The talk addresses 3 popular topics in intelligent traffic systems.

  1. Eco-driving concerns the possibility to suggest optimal speeds to each individual drives so that they can catch the green waves and to avoid unnecessary stops at the intersections. Traffic light sequences are known and given; the optimization is then done via optimal path search in graphs.
  2. Bandwidth optimization consists in devising traffic light sequences maximizing the green-wave size. Liner programming is here used to compute the light phases and green/red periods. One novelty in this work is the possibility to include variable speed control, account for energy consumption, and varying traffic demands.
  3. Traffic light on-line optimization consists in, computing in real-time and according to the road occupancy, a new control policy every cycle. This feedback strategy is based on a mathematical model (vehicle conservation), and a one-step head optimal control design, which can be formulated as a linear program problem. The talk will also shows some animated simulations, using a microscopic simulator. The material of this presentation is based on results of the "COMFORT" project (Associate Team between INRIA project-team NeCS and the Berkeley University project PATH), and the resulting publications: see list below.


Canudas-de-Wit, Carlos was born in Villahermosa, Tabasco, Mexico in 1958. He received his B.Sc. degree in electronics and communications from the Technological Institute of Monterrey, Mexico in 1980. In 1984 he received his M.Sc. in the Department of Automatic Control, Grenoble, France. He was visitor researcher in 1985 at Lund Institute of Technology, Sweden. In 1987 he received his Ph.D. in automatic control from the Polytechnic of Grenoble (Department of Automatic Control), France. Since then he has been working at the same department as "Director of Research at the CNRS", where He teaches and conducts research in the area of control systems.

He is the current leader of the NeCS GIPSA-Lab (CNRS)-INRIA team on Networked Controlled Systems. He has established several industrial collaboration projects with major French companies (FRAMATOME, EDF, CEA, IFREMER, RENAULT, SCHNEIDER, ILL, IFP, ALSTOM). He has been associate editor of the IEEE-Transaction on Automatic Control, from 1992 to 1997, AUTOMATICA, from 1999 to 2002. He is currently Associated Editor of: the Asian Journal of Control (since 2010), IEEE Transaction on Control System Technology (2013-16), and the IEEE Transaction on Control of System Networks (since 2013). He holds the presidency of the European Control Association (EUCA) for the period 2013-15, and served at the IEEE Board of Governors of the Control System Society 2011-2014. He is IEEE Fellows from the Control Systems Society and IFAC Fellow. He holds the ERD-AdG Free-ScaleBack from 2016-2021.


Author: IGM Colloquium