Phase transition in a mixture of adaptive cruise control vehicles and manual vehicles R. Jiang, M.-B. Hu, B. Jia, R. Wang and Q.-S. Wu Eur. Phys. J. B, 58 2 (2007) 197-206 Published online: 10 August 2007 DOI: 10.1140/epjb/e2007-00215-3