Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Metastable States in Cellular Automata for Traffic Flow   Measurements on real traffic have revealed the existence of metastable states
with very high flow. Such states have not been observed in the
Nagel-Schreckenberg (NaSch) model which is the basic cellular automaton for the
description of traffic. Here we propose a simple generalization of the NaSch
model by introducing a velocity-dependent randomization. We investigate a
special case which belongs to the so-called slow-to-start rules. It is shown
that this model exhibits metastable states, thus sheding some light on the
prerequisites for the occurance of hysteresis effects in the flow-density
relation.

21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc