1/f NOISE IN A TRAFFIC MODEL
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TL;DR
One-dimensional traffic flow is simulated by a cellular-automaton-type discrete model, which shows a phase transition between a jam phase and a non-jam phase and by adding random perturbations finds a 1/f power spectrum in the jam phase, whereas a white noise is observed in the non- jam phase.
Abstract
One-dimensional traffic flow is simulated by a cellular-automaton-type discrete model. As we increase the car density, the model shows a phase transition between a jam phase and a non-jam phase. By adding random perturbations we found a 1/f power spectrum in the jam phase, whereas a white noise is observed in the non-jam phase.