Data-driven analysis and forecasting of highway traffic dynamics

A. M. Avila () and I. Mezić ()
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A. M. Avila: University of California Santa Barbara
I. Mezić: University of California Santa Barbara

Nature Communications, 2020, vol. 11, issue 1, 1-16

Abstract: Abstract The unpredictable elements involved in a vehicular traffic system, like human interaction and weather, lead to a very complicated, high-dimensional, nonlinear dynamical system. Therefore, it is difficult to develop a mathematical or artificial intelligence model that describes the time evolution of traffic systems. All the while, the ever-increasing demands on transportation systems has left traffic agencies in dire need of a robust method for analyzing and forecasting traffic. Here we demonstrate how the Koopman mode decomposition can offer a model-free, data-driven approach for analyzing and forecasting traffic dynamics. By obtaining a decomposition of data sets collected by the Federal Highway Administration and the California Department of Transportation, we are able to reconstruct observed data, distinguish any growing or decaying patterns, and obtain a hierarchy of previously identified and never before identified spatiotemporal patterns. Furthermore, it is demonstrated how this methodology can be utilized to forecast highway network conditions.

Date: 2020
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DOI: 10.1038/s41467-020-15582-5

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