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Critical Density of Experimental Traffic Jam

In: Traffic and Granular Flow '13

Author

Listed:
  • Shin-ichi Tadaki

    (Saga University, Department of Information Science)

  • Macoto Kikuchi

    (Osaka University, Cybermedia Center)

  • Minoru Fukui

    (Nakanihon Automotive College)

  • Akihiro Nakayama

    (Meijo University, Faculty of Science and Technology)

  • Katsuhiro Nishinari

    (The University of Tokyo, Research Center for Advanced Science & Technology)

  • Akihiro Shibata

    (High Energy Accelerator Research Organization (KEK) & Graduate University for Advanced Studies (Sokendai), Computing Research Center)

  • Yuki Sugiyama

    (Nagoya University, Department of Complex Systems Science)

  • Taturu Yosida

    (Nakanihon Automotive College)

  • Satoshi Yukawa

    (Osaka University, Department of Earth and Space Science)

Abstract

In a previous experiment, we have demonstrated that a traffic jam emerges without any bottleneck at a certain high density. In the present work, we performed an indoor circuit experiment in Nagoya Dome and estimated the critical density. The circuit is large (314 m in circumference) compared to the previous experiment. Positions of cars were observed in 0.16 m resolution. We performed 19 sessions by changing the number of cars from 10 to 40. We found that jammed flow was realized in high density while free flow in low density. We also found the indication of metastability at an intermediate density. The critical density is estimated by analyzing the density-flow relation. The critical density locates between 0. 08 and 0. 09 m−1. It is consistent with that observed in real expressways.

Suggested Citation

  • Shin-ichi Tadaki & Macoto Kikuchi & Minoru Fukui & Akihiro Nakayama & Katsuhiro Nishinari & Akihiro Shibata & Yuki Sugiyama & Taturu Yosida & Satoshi Yukawa, 2015. "Critical Density of Experimental Traffic Jam," Springer Books, in: Mohcine Chraibi & Maik Boltes & Andreas Schadschneider & Armin Seyfried (ed.), Traffic and Granular Flow '13, edition 127, pages 505-511, Springer.
    • Handle: RePEc:spr:sprchp:978-3-319-10629-8_56
    DOI: 10.1007/978-3-319-10629-8_56
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