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AKSOE: Arbeitskreis Physik sozio-ökonomischer Systeme

AKSOE 16: Traffic Dynamics, Urban, and Regional Systems

AKSOE 16.4: Vortrag

Freitag, 30. März 2007, 11:00–11:30, H8

Model-Creation by Analysing NGSIM-Vehicular-Datasets — •Christof Liebe — Universität Rostock, Institut für Physik, Germany

Within the american Next Generation Simulation Program (NGSIM) several vehicular datasets were recorded. The first dataset was published in 2003 and provide trajectories with a length of about 900 m. Three more datasets were published in 2005, showing shorter trajectories including a jam. They can be used to calibrate and validate traffic models.

In order to analyse the single car time series data and to compare it with traffic models, we show how significant quantities can be extracted. For this purpose we have investigated space-time plots and flow diagrams in the headway-velocity space.

The abrupt appearence of jams, which are stable over several minutes, is visible in space-time plots. Flow diagrams are investigated to get new insights in traffic modeling. A model including dynamical traps will be presented. It takes into account, that a driver is able to control its velocity much better then its headway.