We present a new analytical description of the cellular automaton model for singlelane traffic. In contrast to previous approaches we do not use the occupation number of sites as dynamical variable but rather the distance between consecutive cars. Therefore certain longerranged correlations are taken into account and even a mean-field approach yields non-trivial results. In fact for the model w...

Frequent lane-changes in highway merging, diverging, and weaving areas could disrupt traffic flow and, even worse, lead to accidents. In this paper, we propose a simple model for studying bottleneck effects of lane-changing traffic and aggregate traffic dynamics of a roadway with lane-changing areas. Based on the observation that, when changing its lane, a vehicle affects traffic on both its cu...

T has been a revival of interest in traffic flow theory in the late 1990s, mostly because vehicle detectors have been installed at many highway locations throughout the world to record the passing of vehicles. The purpose of these detectors is to monitor congestion and provide information for possible control or to advise motorists of possible alternative routing. To understand the consequences...

Bing-Hong Wang, P.M. Hui, , Chin-Kun Hu 3 1Department of Modern Physics and Nonlinear Science Center, University of Science and Technology of China, Hefei 230026, China Email: [email protected] 2 Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong Email:[email protected] 3 Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan Email:...

A systematic understanding of traffic dynamics on road networks is crucial for many transportation studies and can help to develop more efficient ramp metering, evacuation, signal control, and other management and control strategies. In this study, we present a theory of multi-commodity network traffic flow based on the Lighthill–Whitham–Richards (LWR) model. In particular, we attempt to analyz...

We perform a simplified Ethernet traffic simulation in order to clarify the physical mechanism of the phase transition behavior which has been experimentally observed in the flow density fluctuation of Internet traffic. In one phase traffics from nodes connected with an Ethernet cable are mixed, and in the other phase, the nodes alternately send bursts of packets. The competition of sending pac...

Transit signal priority TSP is recognized as having the potential to improve transit service reliability at small cost to general traffic. The popular preference for TSP encounters the challenges of various and challenging test scenarios. According to the stochastic characteristics of traffic flow, the signal timing model was established for TSP at an isolated signal intersection, where the pas...

This study has three main objectives: 1 to develop new, theory-based, queuing relationships for the quality of flow on two-lane rural highways; 2 to estimate the relationships both from the empirical data that were collected on 15 two-lane rural highways and from the queuing models that were developed; and 3 to propose a new level-of-service variable that measures the quality of the flow both i...

The cellular automaton model for traffic flow exhibits a jamming transition from a free-flow phase to a congested phase. In the deterministic case this transition corresponds to a critical point with diverging correlation length. We present data from numerical simulations which suggest the absence of critical behavior in the presence of noise. The transition of the deterministic case is smeared...