Two-car Following Model Based on One-dimension Cellular Automaton

A one-dimension cellular automaton traffic flow model, named two-car following model is proposed. Taking into account of the two frontal vehicles' velocity and time-headway when modeling, the model has more traffic information. It can reveal traffic flow's metastable characteristics with better robustness and higher critical density. And the update rule is completely parallel, so it can adapt to large-scale traffic simulations. Theoretical analysis and experimental results reveal that the metastable character is relevant with the relation degree between cars and the random slow probability.