Density Fluctuations in Traffic Flow

Abstract

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.

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

References in corpus (5)

• Emergent Traffic Jams
• Deterministic Models for Traffic Jams
• Density waves of granular flow in a pipe using lattice gas automata
• Coupled-Map Modeling of One-Dimensional Traffic Flow
• Density waves and $1/f$ density fluctuations in granular flow

Cited by in corpus (5)

• Traffic and Related Self-Driven Many-Particle Systems
• Fundamentals of Traffic Flow
• Spatio-temporal organization of vehicles in a cellular automata model of traffic with 'slow-to-start' rule
• Long-term power-law fluctuation in Internet traffic
• Cellular Automaton Rule184++C. A Simple Model for the Complex Dynamics of Various Particles Flow