Adaptive drivers in a model of urban trafficA. De Martino1, M. Marsili2 and R. Mulet3
1 INFM-SMC and Dipartimento di Fisica, Università di Roma "La Sapienza" p.le A. Moro 2, 00185 Roma, Italy
2 The Abdus Salam ICTP - Strada Costiera 14, 34014 Trieste, Italy
3 Henri Poincaré Chair of Complex Systems and Superconductivity Laboratory Physics Faculty and IMRE, Universidad de la Habana - CP 10400, La Habana, Cuba
(Received 26 August 2003; accepted in final form 5 November 2003)
We introduce a simple lattice model of traffic flow in a city where drivers optimize their route selection in time in order to avoid traffic jams, and study its phase structure as a function of the density of vehicles and of the drivers' behavioral parameters via numerical simulations and mean-field analytical arguments. We identify a phase transition between a low- and a high-density regime. In the latter, inductive drivers may surprisingly behave worse than randomly selecting drivers.
87.23.Ge - Dynamics of social systems.
05.65.+b - Self-organized systems.
© EDP Sciences 2004