title: Collectively optimal routing for congested traffic limited by link capacity.
abstract: We show that the capacity of a complex network that models a city street grid to support congested traffic can be optimized by using routes that collectively minimize the maximum ratio of betweenness to capacity in any link. Networks with a heterogeneous distribution of link capacities and with a heterogeneous transport load are considered. We find that overall traffic congestion and average travel times can be significantly reduced by a judicious use of slower and smaller capacity links.
authors.affiliation: Department of Physics, University of Houston, Houston Texas 77204-5005, USA. dbogdan@mail.uh.edu
authors.forename: Bogdan
authors.initials: B
authors.lastname: Danila
authors.forename: Yudong
authors.initials: Y
authors.lastname: Sun
authors.forename: Kevin E
authors.initials: KE
authors.lastname: Bassler
mesh_terms: D000465:Algorithms; D001334:Automobile Driving; D002947:Cities; D003195:Computer Communication Networks; D003198:Computer Simulation; D006801:Humans; D015233:Models, Statistical; D008962:Models, Theoretical; D010825:Physics / Q000379:methods*; D014186:Transportation; D014505:Urban Population