It is suggested that the question of existence of a jamming phase transition in a broad class of single-lane cellular-automaton traffic models may be studied using a correspondence to the asymmetric chipping model. In models where such correspondence is applicable, jamming phase transition does not take place. Rather, the system exhibits a smooth crossover between free-flow and jammed states, as the car density is increased.
Bibliographical noteFunding Information:
We thank M.R. Evans and J.L. Lebowitz for useful discussions. The support of the Israel Science Foundation (ISF) and NSF Grant DMR 01-279-26 is gratefully acknowledged.
- Driven diffusive systems
- condensation transition
- traffic jams