Traffic optimization in transport networks based on local routing S. Scellato, L. Fortuna, M. Frasca, J. Gómez-Gardeñes and V. Latora Eur. Phys. J. B, 73 2 (2010) 303-308 Published online: 24 December 2009 DOI: 10.1140/epjb/e2009-00438-2