Density Fluctuations in Traffic Flow

Details Density Fluctuations in Traffic Flow Density Fluctuations in Traffic Flow

1996-01-10

arxiv.org/abs/chao-dyn/9601005v1

Physics

Condensed Matter

5 pages, Figures are available at http://bopper.phys.sci.osaka-u.ac.jp/yuk/density_fluct/dfluct.html or they will be sent up

Scientific paper

10.1143/JPSJ.65.916

Density fluctuations in traffic current are studied by computer simulations using the deterministic coupled map lattice model on a closed single-lane circuit. By calculating a power spectral density of temporal density fluctuations at a local section, we find a power-law behavior, $\sim 1/f^{1.8}$, on the frequency $f$, in non-congested flow phase. The distribution of the headway distance $h$ also shows the power law like $\sim 1/h^{3.0} $ at the same time. The power law fluctuations are destroyed by the occurence of the traffic jam.

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