Dresden 2014 – wissenschaftliches Programm
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SOE: Fachverband Physik sozio-ökonomischer Systeme
SOE 21: Traffic Dynamics, Urban and Regional Systems I
SOE 21.1: Vortrag
Freitag, 4. April 2014, 09:30–09:45, GÖR 226
Phases of scaling and cross-correlation behavior in traffic — •Jan W. Kantelhardt1, Matthew Fullerton2, Mirko Kämpf1, Cristina Beltran-Ruiz3, and Fritz Busch2 — 1Institut für Physik, Martin-Luther-Universität Halle-Wittenberg — 2Department of Traffic Engineering, Technische Universität München — 3Sociedad Iberica de Construcciones Electricas, Madrid, Spain
While many microscopic models of traffic flow describe transitions between different traffic phases, such transitions are difficult to quantify in measured traffic data. Here we study long-term traffic recordings consisting of ≈ 2900 days of flow, density, and velocity time series with minute resolution from a Spanish motorway. We calculate fluctuations, cross-correlations, and long-term persistence properties of these quantities. This leads to a data-driven definition of three (local) traffic states based on the dynamical properties of the data. The states can be identified with free flow, viscous traffic, and traffic jam. The dynamic classification is related with a static classification into three regions in the flow-density diagram.