Effect of Reduced Randomness on Jam in a Two-Dimensional Traffic Model

Abstract

Traffic flow is simulated in a two-dimensional cellular automaton model with an additional regularity on the initial placement of cars: the equal number of cars in rows and columns of the square lattice. Among the ultimate traffic states, the commensurate velocity states are found, where the mean velocity is constant. Reduction of the randomness shifts the critical density for the traffic jam to the higher densities.