Traffic jams without bottlenecks—experimental evidence for the physical mechanism of the formation of a jam
Yuki Sugiyama,Minoru Fukui,Macoto Kikuchi,Katsuya Hasebe,Akihiro Nakayama,Katsuhiro Nishinari,Katsuhiro Nishinari,Shin-ichi Tadaki,Satoshi Yukawa +8 more
TLDR
In this paper, the authors present experimental evidence that the emergence of a traffic jam is a collective phenomenon like "dynamical" phase transitions and pattern formation, and show that a bottleneck is only a trigger and not the essential origin of traffic jam.Abstract:
A traffic jam on a highway is a very familiar phenomenon. From the physical viewpoint, the system of vehicular flow is a non-equilibrium system of interacting particles (vehicles). The collective effect of the many-particle system induces the instability of a free flow state caused by the enhancement of fluctuations, and the transition to a jamming state occurs spontaneously if the average vehicle density exceeds a certain critical value. Thus, a bottleneck is only a trigger and not the essential origin of a traffic jam. In this paper, we present the first experimental evidence that the emergence of a traffic jam is a collective phenomenon like 'dynamical' phase transitions and pattern formationread more
Citations
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String-Stable CACC Design and Experimental Validation: A Frequency-Domain Approach
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Dissipation of stop-and-go waves via control of autonomous vehicles: Field experiments
Raphael Stern,Shumo Cui,Maria Laura Delle Monache,Rahul Bhadani,Matt Bunting,Miles Churchill,Nathaniel Hamilton,R’mani Haulcy,Hannah Pohlmann,Fangyu Wu,Benedetto Piccoli,Benjamin Seibold,Jonathan Sprinkle,Daniel B. Work,Daniel B. Work +14 more
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Saving human lives: what complexity science and information systems can contribute
Dirk Helbing,Dirk Brockmann,Dirk Brockmann,Thomas Chadefaux,Karsten Donnay,Ulf Blanke,Olivia Woolley-Meza,Mehdi Moussaïd,Anders Johansson,Anders Johansson,Jens Krause,Sebastian Schutte,Matjaz Perc +12 more
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Traffic experiment reveals the nature of car-following.
TL;DR: Simulations show that by removing the fundamental notion in the traditional car-following models and allowing the traffic state to span a two-dimensional region in velocity-spacing plane, the growth pattern of disturbances has changed qualitatively and becomes qualitatively or even quantitatively in consistent with that observed in the experiment.
Journal ArticleDOI
Saving Human Lives: What Complexity Science and Information Systems can Contribute
Dirk Helbing,Dirk Brockmann,Dirk Brockmann,Thomas Chadefaux,Karsten Donnay,Ulf Blanke,Olivia Woolley-Meza,Mehdi Moussaïd,Anders Johansson,Anders Johansson,Jens Krause,Sebastian Schutte,Matjaz Perc +12 more
TL;DR: Models and data of crowd disasters, crime, terrorism, war and disease spreading are discussed to show that conventional recipes, such as deterrence strategies, are often not effective and sufficient to contain them and complexity science can help to save human lives.
References
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Journal ArticleDOI
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