Traffic flow in a Manhattan-like urban system
TLDR
A metastability of the system is observed in the transition from saturation state to global deadlock state and the effect of advanced traveller information system (ATIS) and the traffic light switch strategy have been investigated.Abstract:
In this paper, a cellular automaton model of vehicular traffic in Manhattan-like urban system is proposed. In this model, the origin-destination trips and traffic lights have been considered. The system exhibits three different states, i.e., moving state, saturation state and global deadlock state. With a grid coarsening method, vehicle distribution in the moving state and the saturation state has been studied. Interesting structures (e.g., windmill-like one, T-shirt-like one, Y-like one) have been revealed. A metastability of the system is observed in the transition from saturation state to global deadlock state. The effect of advanced traveller information system (ATIS), the traffic light period, and the traffic light switch strategy have also been investigated.read more
Citations
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A future intelligent traffic system with mixed autonomous vehicles and human-driven vehicles
TL;DR: This is the first paper to study a mixed traffic system from a micro perspective based on the cellular automation model and finds an optimal ratio of AVs at which the traffic system has the maximum average flow and theoretical solutions of critical vehicle density are obtained using the mean-field theory in physics.
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Network operation reliability in a Manhattan-like urban system with adaptive traffic lights
TL;DR: It is shown that if the time shortest path information could be provided and updated timely, then the NOR can be remarkably enhanced but the adaptive traffic signals have only trivial effect on NOR.
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Empirical analysis of urban road traffic network: A case study in Hangzhou city, China
TL;DR: It is shown that, on a rainy weekday, the traffic is more congested than that on a sunny weekday; while the result is opposite for weekends, and the percolation theory is applied to study the influence of weather on the traffic network.
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Effects of road network structure on the performance of urban traffic systems
TL;DR: The influence of aspect ratio of a rectangular urban network on the dynamics of traffic system is studied and the maximal arrival rate and the critical density of congestion of MFD are investigated as two main indicators for system performance.
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Effects of traffic lights for Manhattan-like urban traffic network in intelligent transportation systems
TL;DR: It is concluded that the traffic system performance can be improved if the anticlockwise rule combined with the congestion coefficient feedback strategy-based route guidance is adopted and the number of traffic lights is reduced to its minimum requirement.
References
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A cellular automaton model for freeway traffic
Kai Nagel,Michael Schreckenberg +1 more
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Traffic and related self-driven many-particle systems
Dirk Helbing,Dirk Helbing +1 more
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Statistical physics of vehicular traffic and some related systems
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