Memory Effects and Scaling Properties of Traffic Flows

Details Memory Effects and Scaling Properties of Traffic Flows Memory Effects and Scaling Properties of Traffic Flows

2006-03-29

arxiv.org/abs/physics/0603252v1

Europhysics Letters, Vol. 72, No. 4, pp. 513-519 (2005)

Physics

Data Analysis, Statistics and Probability

3 figures

Scientific paper

10.1209/epl/i2005-10291-y

Traffic flows are studied in terms of their noise of sound, which is an easily accessible experimental quantity. The sound noise data is studied making use of scaling properties of wavelet transforms and Hurst exponents are extracted. The scaling behavior is used to characterize the traffic flows in terms of scaling properties of the memory function in Mori-Lee stochastic differential equations. The results obtained provides for a new theoretical as well as experimental framework to characterize the large-time behavior of traffic flows. The present paper outlines the procedure by making use of one-lane computer simulations as well as sound-data measurements from a real two-lane traffic flow. We find the presence of conventional diffusion as well as 1/f-noise in real traffic flows at large time scales.

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