miércoles, 11 de marzo de 2015

car jams

Bifurcations and multiple traffic jams in a car-following model with reaction-time delay

G Orosz, B Krauskopf, RE Wilson - Physica D: Nonlinear Phenomena, 2005 - Elsevier
We investigate an optimal velocity car-following model for n cars on a circular single-lane
road, where reaction-time delay of drivers is taken into account. The stability of the uniform
flow equilibrium is studied analytically, while bifurcating periodic solutions for different ...

Traffic jams induced by fluctuation of a leading car

T Nagatani - Physical Review E, 2000 - APS
Abstract We present a phase diagram of the different kinds of congested traffic triggered by
fluctuation of a leading car in an open system without sources and sinks. Traffic states and
density waves are investigated numerically by varying the amplitude of fluctuation using a ...

Spatio-temporal dynamics of jams in two-lane traffic flow with a blockage

S Kurata, T Nagatani - Physica A: Statistical Mechanics and its Applications, 2003 - Elsevier
A two-lane traffic model is presented to investigate traffic jams induced by a car accident. The
model is an extension one of the optimal velocity model taking. ... Abstract. A two-lane traffic model
is presented to investigate traffic jams induced by a car accident. ...

Presence of many stable nonhomogeneous states in an inertial car-following model

E Tomer, L Safonov, S Havlin - Physical review letters, 2000 - APS
... we get b 0.21 6 0.04. Relatively slow power-law de- cay of fluctuations can explain the
experimentally observed long survival time of jams [2]. In summary, we present a single lane
car-following model which explains important features of traffic ob- served experimentally. ...

Deterministic models for traffic jams

K NagelHJ Herrmann - Physica A: Statistical Mechanics and its …, 1993 - Elsevier
... Volume 199, Issue 2, 15 October 1993, Pages 254–269. Cover image Cover image.
Deterministic models for traffic jams... If positions and velocities are continuous variables the
model shows self-organized critically driven by the slowest car. References. ...

[BOOK] Turtles, termites, and traffic jams: Explorations in massively parallel microworlds

M Resnick - 1994 - books.google.com
MASSIVELY PARALLEL MICROWORLDS Page 2. ... Turtles, termites, and traffic jams:
explorations in massively parallel microworlds / Mitchel Resnick. ...

Effect of car acceleration on traffic flow in 1D stochastic CA model

T Nagatani - Physica A: Statistical Mechanics and its Applications, 1996 - Elsevier
... In congested traffic flow, the properties of traffic jams are studied by computer simulation.
The dependence of the propagating velocity of traffic jams upon car acceleration is shown.
Also, a simple mean-field theory is given for the congested traffic flow. ...

The physics of traffic jams

T Nagatani - Reports on progress in physics, 2002 - iopscience.iop.org
... fluid dynamic models. But the works of the car-following models have received little
attention. Especially, the nonlinear wave equations describing the traffic jams have
been sparsely discussed in the two papers. We discuss ...

Emergent traffic jams

K Nagel, M Paczuski - Physical Review E, 1995 - APS
... Steps that are taken to reduce random fluctuations or perturba- tions, such as cruise control
or automatic car-following systems, in fact, push the traffic network closer to its un- derlying
critical point, therebymaking it more likely to have large jams...

Soliton and kink jams in traffic flow with open boundaries

M Muramatsu, T Nagatani - Physical Review E, 1999 - APS
... in the optimal velocity model a car- following model of a one-dimensional traffic flow with open
boundaries. Soliton density wave is distinguished from the kink density wave. It is shown that
the soliton density wave appears only at the threshold of occurrence of traffic jams...

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