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- W3048755196 abstract "Abstract Traffic systems are complex systems that exhibit non-stationary characteristics. Therefore, the identification of temporary traffic states is significant. In contrast to the usual correlations of time series, here we study those of position series, revealing structures in time, i.e. the rich non-Markovian features of traffic. Considering the traffic system of the Cologne orbital motorway as a whole, we identify five quasi-stationary states by clustering reduced-rank correlation matrices of flows using the k -means method. The five quasi-stationary states with nontrivial features include one holiday state, three workday states and one mixed state of holidays and workdays. In particular, the workday states and the mixed state exhibit strongly correlated time groups shown as diagonal blocks in the correlation matrices. We map the five states onto reduced-rank correlation matrices of velocities and onto traffic states where free or congested states are revealed in both space and time. Our study opens a new perspective for studying traffic systems. This contribution is meant to provide a proof of concept and a basis for further study." @default.
- W3048755196 created "2020-08-18" @default.
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- W3048755196 date "2020-10-01" @default.
- W3048755196 modified "2023-10-16" @default.
- W3048755196 title "Quasi-stationary states in temporal correlations for traffic systems: Cologne orbital motorway as an example" @default.
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- W3048755196 doi "https://doi.org/10.1088/1742-5468/abbcd3" @default.
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