Using computer simulations, we show that metastable states still
occur in two-lane traffic models with slow to start rules.
However, these metastable states no longer exist in systems where
aggressive drivers (which do not look back before changing
lanes) are present. Indeed, the presence of only one aggressive
driver in the circuit, triggers the breakdown of the high flow
states. In these systems, the steady state is unique and its
relaxation dynamics should depend on the lane changing probability
pch and the number of aggressive drivers present in the
circuit. It is found also that the relaxation time τ diverges
as the form of a power-law: τ∝pch-β, β=1.
02.50.-Ey Stochastic processes 05.45.-a Nonlinear dynamics and chaos 45.70.Vn Granular models of complex systems; traffic flow
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