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F → S → F Transitions in Vehicle Probe Data

In: Traffic and Granular Flow '17

Author

Listed:
  • Sven-Eric Molzahn

    (Daimler AG, RD/USN, HPC 059-X901)

  • Boris S. Kerner

    (Physics of Transport and Traffic)

  • Hubert Rehborn

    (Daimler AG, RD/USN, HPC 059-X901)

  • Sergey L. Klenov

    (Moscow Institute of Physics and Technology)

  • Micha Koller

    (Daimler AG, RD/USN, HPC 059-X901)

Abstract

Based on a study of probe vehicle data we have revealed empirical F→S→F transitions before traffic breakdown at the bottleneck theoretically predicted by Kerner. Anonymized probe data from connected vehicles of a large fleet have been collected. The frequency of connected vehicles in our study has been more than ten times larger (on average about 10 s between probe vehicles) than in earlier studies. This data shows that disturbances in free flow evolve in a neighbourhood of the bottleneck leading to small regions of synchronized flow (F→S transition). These regions of synchronized flow dissolve after a random amount of time (traffic recovers to free flow (S→F transition)) before the traffic breakdown occurs. In contrast with the F→S→F transitions, traffic breakdown leads to a long-living congested traffic pattern propagating upstream of the bottleneck. The empirical findings of this paper support some of the theoretical features of the S→F instability.

Suggested Citation

  • Sven-Eric Molzahn & Boris S. Kerner & Hubert Rehborn & Sergey L. Klenov & Micha Koller, 2019. "F → S → F Transitions in Vehicle Probe Data," Springer Books, in: Samer H. Hamdar (ed.), Traffic and Granular Flow '17, pages 71-78, Springer.
    • Handle: RePEc:spr:sprchp:978-3-030-11440-4_9
    DOI: 10.1007/978-3-030-11440-4_9
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