Segregation effect in symmetric cellular automata model for two-lane mixed traffic X. G. Li, Z. Y. Gao, B. Jia and R. Jiang Eur. Phys. J. B, 54 3 (2006) 385-391 Published online: 22 December 2006 DOI: 10.1140/epjb/e2006-00451-y