Nakanihon Automotive College

About: Nakanihon Automotive College is a education organization based out in Kamo, Japan. It is known for research contribution in the topics: Traffic flow & Cellular automaton. The organization has 32 authors who have published 91 publications receiving 2385 citations. The organization is also known as: Naka-nihon jidōsha tanki daigaku.

Traffic jams without bottlenecks—experimental evidence for the physical mechanism of the formation of a 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 formation

Traffic Flow in 1D Cellular Automaton Model Including Cars Moving with High Speed

Abstract: Traffic flow is simulated by one-dimensional cellular automaton (CA) model including cars moving with high speed. The simulation shows a phase transition between the moving phase and the jamming phase at p =1/( m +1) ( p : density of cars, m : the maximum number of sites by which cars advance at each time step). A mean-field theory can reproduce the average velocity found by simulations.

Self-Organized Phase Transitions in Cellular Automaton Models for Pedestrians

Abstract: Cellular automaton models for walking of pedestrians are studied in a system where one pedestrian and many pedestrians walk in the opposite direction and encounter each other on a passageway. Two models have been studied for the behavior avoiding from collision when the pedestrians meet with each other. Phase transitions on the walking behavior occur by self-organization with the critical density on the pedestrians.

Phase transition in traffic jam experiment on a circuit

Abstract: The emergence of a traffic jam is considered to be a dynamical phase transition in a physics point of view; traffic flow becomes unstable and changes phase into a traffic jam when the car density exceeds a critical value. In order to verify this view, we have been performing a series of circuit experiments. In our previous work (2008 New J. Phys. 10 033001), we demonstrated that a traffic jam emerges even in the absence of bottlenecks at a certain high density. In this study, we performed a larger indoor circuit experiment in the Nagoya Dome in which the positions of cars were observed using a high-resolution laser scanner. Over a series of sessions at various values of density, we found that jammed flow occurred at high densities, whereas free flow was conserved at low densities. We also found indications of metastability at an intermediate density. The critical density is estimated by analyzing the fluctuations in speed and the density–flow relation. The value of this critical density is consistent with that observed on real expressways. This experiment provides strong support for physical interpretations of the emergence of traffic jams as a dynamical phase transition.